<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE article  PUBLIC "-//NLM//DTD Journal Publishing DTD v3.0 20080202//EN" "http://dtd.nlm.nih.gov/publishing/3.0/journalpublishing3.dtd"><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" dtd-version="3.0" xml:lang="en" article-type="research article"><front><journal-meta><journal-id journal-id-type="publisher-id">SN</journal-id><journal-title-group><journal-title>Social Networking</journal-title></journal-title-group><issn pub-type="epub">2169-3285</issn><publisher><publisher-name>Scientific Research Publishing</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.4236/sn.2017.62010</article-id><article-id pub-id-type="publisher-id">SN-75752</article-id><article-categories><subj-group subj-group-type="heading"><subject>Articles</subject></subj-group><subj-group subj-group-type="Discipline-v2"><subject>Computer Science&amp;Communications</subject></subj-group></article-categories><title-group><article-title>
 
 
  Greek Political Language during the Economic Crisis—A Network Analytic Approach
 
</article-title></title-group><contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Dimitrios</surname><given-names>Kydros</given-names></name><xref ref-type="aff" rid="aff1"><sup>1</sup></xref><xref ref-type="corresp" rid="cor1"><sup>*</sup></xref></contrib><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Anastasios</surname><given-names>Anastasiadis</given-names></name><xref ref-type="aff" rid="aff1"><sup>1</sup></xref></contrib></contrib-group><aff id="aff1"><addr-line>Department of Accounting and Finance, TEI of Central Macedonia, Serres, Greece</addr-line></aff><author-notes><corresp id="cor1">* E-mail:<email>dkydros@teiser.gr(DK)</email>;</corresp></author-notes><pub-date pub-type="epub"><day>06</day><month>03</month><year>2017</year></pub-date><volume>06</volume><issue>02</issue><fpage>164</fpage><lpage>180</lpage><history><date date-type="received"><day>January</day>	<month>4,</month>	<year>2017</year></date><date date-type="rev-recd"><day>Accepted:</day>	<month>April</month>	<year>25,</year>	</date><date date-type="accepted"><day>April</day>	<month>28,</month>	<year>2017</year></date></history><permissions><copyright-statement>&#169; Copyright  2014 by authors and Scientific Research Publishing Inc. </copyright-statement><copyright-year>2014</copyright-year><license><license-p>This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/</license-p></license></permissions><abstract><p>
 
 
  In this paper, we seek to analyze pre-electoral political language in Greece with the use of Social Network Analysis. For this analysis, we collected data from the pre-elections speeches of five political leaders from the 20th of September 2015 Greek general elections. We proceed to form, analyze and compare networks of words with an emphasis on financial vocabulary. Findings can provide interesting insights into how political leaders structure their speeches, evaluate important issues and use economic terms and political rhetoric, while different structural patterns can reveal the differences between political parties. Finally, we check whether the overall networks follow the general rules of real-life networks by belonging to the small-world or scale-free categories.
 
</p></abstract><kwd-group><kwd>Social Network Analysis</kwd><kwd> Political Language</kwd><kwd> Greek Elections</kwd><kwd> Economic Crisis</kwd></kwd-group></article-meta></front><body><sec id="s1"><title>1. Introduction and Literature</title><p>It is very well known that Greece has been in the middle of financial and socio- political crisis. The country’s political life is characterized by the decline of traditional political formations, the emergence of new political forces, the formation of short-lived coalition governments and frequent elections. During a rather small time-window (2009-2015), five general elections were held in Greece, with seven different prime ministers. At the same time, financial terms and words are used increasingly in public political discourse and everyday discussions among citizens. Therefore, it is interesting to study how political leaders structure their speeches to address the pressing issues of this crucial and turbulent period.</p><p>The volume of social network research in political science has expanded radically in the last three decades, although this growth is characterized by conceptual disorder, heterogeneity and incoherence [<xref ref-type="bibr" rid="scirp.75752-ref1">1</xref>] . In [<xref ref-type="bibr" rid="scirp.75752-ref2">2</xref>] , one can see a study of inter-organizational relations in the health and energy domains and [<xref ref-type="bibr" rid="scirp.75752-ref3">3</xref>] edited volume exposes network analysis to the wider audience. Recent research has focused on three types of networks [<xref ref-type="bibr" rid="scirp.75752-ref4">4</xref>] : government networks, which are formations of collaboration of governments; policy networks, in which actors negotiate and interact during policymaking processes; collective action networks, which depict different instances of collective action. Reference [<xref ref-type="bibr" rid="scirp.75752-ref5">5</xref>] presented a comprehensive overview of the research on policy networks, while [<xref ref-type="bibr" rid="scirp.75752-ref6">6</xref>] about co- llective action networks. In his empirical study, [<xref ref-type="bibr" rid="scirp.75752-ref7">7</xref>] examined 1014 publications related to political networks and identified their most common areas of inquiry: Europeanisation; governance/public policy; local, urban, and rural studies; nongovernmental organizations and social movements; international relations; electoral systems and voting. Reference [<xref ref-type="bibr" rid="scirp.75752-ref8">8</xref>] has presented a concise review on the applications of SNA in political science.</p><p>Fewer scholars have tried to analyze political discourses using network concepts. However, there has been the significant increase in the relevant articles recently. Discourse network analysis has been utilized in various policy sectors: climate governance [<xref ref-type="bibr" rid="scirp.75752-ref9">9</xref>] [<xref ref-type="bibr" rid="scirp.75752-ref10">10</xref>] , deforestation [<xref ref-type="bibr" rid="scirp.75752-ref11">11</xref>] , nuclear power policy [<xref ref-type="bibr" rid="scirp.75752-ref12">12</xref>] , pension politics [<xref ref-type="bibr" rid="scirp.75752-ref13">13</xref>] , transport mobility [<xref ref-type="bibr" rid="scirp.75752-ref14">14</xref>] , property rights [<xref ref-type="bibr" rid="scirp.75752-ref15">15</xref>] , and shooting rampages [<xref ref-type="bibr" rid="scirp.75752-ref16">16</xref>] . These scholars combined content analysis and network analysis to analyze discourse networks, in which actors (parties, legislators, interest groups, and organizations) are connected to the concepts they employ [<xref ref-type="bibr" rid="scirp.75752-ref17">17</xref>] .</p><p>Finally, network-based procedures have also been extensively applied in text analysis. Semantic network analysis [<xref ref-type="bibr" rid="scirp.75752-ref18">18</xref>] and network text analysis [<xref ref-type="bibr" rid="scirp.75752-ref19">19</xref>] [<xref ref-type="bibr" rid="scirp.75752-ref20">20</xref>] [<xref ref-type="bibr" rid="scirp.75752-ref21">21</xref>] are general labels which describe several relational approaches that seek to extract and represent networks from linguistic data. Reference [<xref ref-type="bibr" rid="scirp.75752-ref22">22</xref>] reviewed seventeen such approaches for constructing networks of words. In word-based networks the relationship between two words is determined by their proximity or co-occu- rrence within a given text range (e.g. a sentence; a window, n-words wide), whereas concept-based networks consist of connected concepts [<xref ref-type="bibr" rid="scirp.75752-ref23">23</xref>] . Relations can also be determined by the syntactic [<xref ref-type="bibr" rid="scirp.75752-ref18">18</xref>] or morphological and etymological structure of words [<xref ref-type="bibr" rid="scirp.75752-ref20">20</xref>] . Compared to traditional content analysis, network analysis focuses not just on frequency counts of concepts and words, but also examines their positional properties in order to highlight a text’s key themes [<xref ref-type="bibr" rid="scirp.75752-ref21">21</xref>] [<xref ref-type="bibr" rid="scirp.75752-ref24">24</xref>] . Repre- senting linguistic structures as networks allows connections within and between texts to be visualized in a simplified manner enabling researchers to identify other- wise invisible complex relationships [<xref ref-type="bibr" rid="scirp.75752-ref19">19</xref>] .</p><p>In this paper, we use SNA methods to help the analysis of political discourse in Greece. We continue a previous similar work [<xref ref-type="bibr" rid="scirp.75752-ref25">25</xref>] , which dealt with the January 2015 Greek elections. Here we deal with the pre-electoral period of September 2015. In both works, we construct networks of adjacent words using data from the pre-elections speeches of five political leaders. Words are organized into groups and are ranked according to their positions in the network. Furthermore, we explore whether the overall networks follow the general rules of real-life networks in the topological sense, by checking whether they exhibit small-world or scale free properties [<xref ref-type="bibr" rid="scirp.75752-ref26">26</xref>] [<xref ref-type="bibr" rid="scirp.75752-ref27">27</xref>] . Finally, we try to find out the differences between those networks and to examine how their different structures reflect the diverse political and economic views of the leaders. We also make some comparisons with January 2015 elections.</p><p>This analysis could be useful for political analysts and researchers to gain insight into political speeches. It could also contribute to network literature, as it explores the power of network models and rules in a new setting, Greek political discourse or political discourse in general.</p></sec><sec id="s2"><title>2. Network Formation, Topology and Classification</title><p>In order to form our networks we use words as nodes and their adjacency within the text to be the connecting relation. This idea has been presented in [<xref ref-type="bibr" rid="scirp.75752-ref28">28</xref>] , who used word adjacent networks to represent summaries of Portuguese texts as networks. Such a network can be considered either as directed or undirected, according to the decision whether the ordering of words should be considered.</p><p>Texts of words can be retrieved in many ways. We collected and concatenated all political speeches of leaders from the official webpages of five political parties, right after the 20<sup>th</sup> of September 2015 elections. These leaders were MrTsipras from SYRIZA (a radical left party at least at that time-period), MrMeimarakis from New Democracy (a center-right party), MrKoutsoumbas from KKE (the Greek Communist party, one of the very few left in Europe or even in the whole world), MrKammenos from Independent Greeks (a rather right-wing, anti-me- morandum party) and MrsGennimata from PASOK (a socialist party which was changing places in the government of Greece for decades together with New De- mocracy). These parties represent very well the political spectrum in Greece. It was impossible to create networks from the other political party represented in the parliament (POTAMI), since they used a completely different approach during their pre-electoral fight, using mainly short social-media appearances or free interviews. Finally, we deliberately excluded the far-right, allegedly fascist, party of Golden Dawn. For this party and other similar movements in Europe, a different research work is currently been prepared, dealing again with word adjacency networks.</p><p>However, there exist a number of issues that impose a certain unnecessary complexity or even ambiguity in such networks. One such issue is common to all natural languages and has to do with different forms of the same word, for example in single or plural form. In languages with more complex grammar and/or syntax, especially in ones that have evolved over many centuries like the Greek language, even more problems exist because of different forms of adjectives and verbs or genders of words, or even many synonyms or ancient instances of the same word.</p><p>In [<xref ref-type="bibr" rid="scirp.75752-ref25">25</xref>] , a pre-processing procedure has been introduced and we follow the same procedure for our September 2015 pre-electoral period texts. This procedure is mainly manual, since no proper automated tool was found. In short, adjectives, nouns and verbs were converted, pronouns were replaced by names, participles were treated as verbs or adjectives dependently, articles and other small words were mostly deleted but words like “we” and “you” were kept in place. In <xref ref-type="fig" rid="fig1">Figure 1</xref>, this procedure is shown in a short text, together with the created network.</p><p>After all necessary preparation procedures, simple ASCII texts were produced. We then used a small C language program to create edge lists and imported them to NodeXL, a semi-free Excel Template provided by the Social Media Research Foundation, in order to produce pictorial visualizations, to calculate centrality metrics and to investigate the community structure of our networks.</p><p>A sample view of one of the networks is shown in <xref ref-type="fig" rid="fig2">Figure 2</xref>, where MrTsipras’ word-adjacency network is drawn.</p>
<fig id="fig1"  position="float">
<label><xref ref-type="fig" rid="fig1">Figure 1</xref></label>
<caption><title> A sample text and its respective directed network</title></caption>
</fig>
<table-wrap id="table_fig1" >
<object-id pub-id-type="pii">
<xref ref-type="table" rid="table1">Table 1</xref></object-id>
</table-wrap><fig id="fig1"  position="float"><label><xref ref-type="fig" rid="fig2">Figure 2</xref></label><caption><title> Mr Tsipras’ word-adjacency network</title></caption><graphic mimetype="image"   position="float"  xlink:type="simple"  xlink:href="http://html.scirp.org/file/5-2680148x3.png"/></fig><p>In <xref ref-type="fig" rid="fig2">Figure 2</xref>, we used NodeXL’s feature to group communities of nodes (see Section 3) in the same area. Since all networks were created in similar manner, we choose not to represent all of them in this paper. Visualizations can give important insights to structure but not in large or similar networks.</p><p>According to [<xref ref-type="bibr" rid="scirp.75752-ref29">29</xref>] , density, average degree, average distance, diameter and average clustering coefficient are a set of metrics that represent to a very good extend the topology of a simple, undirected network. In <xref ref-type="table" rid="table1">Table 1</xref>, we include all these metrics for our five networks.</p><p>A quite obvious difference between the networks of <xref ref-type="table" rid="table1">Table 1</xref> has to do with the absolute numbers of nodes and links, especially for Kammenos’ and Gennimata’s networks. This difference has to do with fewer speeches uploaded in the parties’ webpages, which in turn probably has to do with some lack of organization in these institutions, or because those parties considered enough to upload visual footage without any texts. It should be noted that MrKammenos’ party is more of a coalition between smaller movements in the right spectrum and less a well- established political party. On the other hand, MrsGennimata’s party (PASOK) has been a quite historical party but it came very close to become extinguished after a general (although not proven) popular belief that this exact history was one of the main factors led to the current crisis. The internal organization of this party (and of the New Democracy party too) has also suffered from poor financial management and extremely high debts to banks, loss of personnel etc.</p><p>MrKammenos’ network has another interesting feature that makes a difference from the other networks, which is the increased density. Since density means that there exist more links between fewer nodes, this might mean a rather poorer voca- bulary for the speaker.</p><p>Diversities are also the larger diameter and smaller average degree in MrsGennimata’s network, probably induced through a rather loose use of language for this political leader or perhaps because of more different main ideas in her speeches.</p><p>According to [<xref ref-type="bibr" rid="scirp.75752-ref27">27</xref>] , small average distance, small diameter and small values in average clustering coefficient, generally mean that the inspected networks are small-worlds. Furthermore, [<xref ref-type="bibr" rid="scirp.75752-ref26">26</xref>] have proven that in small-worlds the degree</p>
<table-wrap id="table1" >
<label><xref ref-type="table" rid="table1">Table 1</xref></label>
<caption><title> Basic topological features</title></caption>
<table><tbody><thead><tr><th align="center" valign="middle"  rowspan="2"  >Metric</th><th align="center" valign="middle"  colspan="5"  >Political Leader’s Network</th></tr></thead><tr><td align="center" valign="middle" >Tsipras</td><td align="center" valign="middle" >Meimarakis</td><td align="center" valign="middle" >Koutsoumbas</td><td align="center" valign="middle" >Kammenos</td><td align="center" valign="middle" >Gennimata</td></tr><tr><td align="center" valign="middle" >Number of Nodes</td><td align="center" valign="middle" >3892</td><td align="center" valign="middle" >3071</td><td align="center" valign="middle" >3136</td><td align="center" valign="middle" >1704</td><td align="center" valign="middle" >1997</td></tr><tr><td align="center" valign="middle" >Number of Links</td><td align="center" valign="middle" >13,602</td><td align="center" valign="middle" >11,461</td><td align="center" valign="middle" >9756</td><td align="center" valign="middle" >4739</td><td align="center" valign="middle" >4064</td></tr><tr><td align="center" valign="middle" >Density (Undirected)</td><td align="center" valign="middle" >0.0024</td><td align="center" valign="middle" >0.0033</td><td align="center" valign="middle" >0.0026</td><td align="center" valign="middle" >0.0040</td><td align="center" valign="middle" >0.0029</td></tr><tr><td align="center" valign="middle" >Average Degree</td><td align="center" valign="middle" >9.27</td><td align="center" valign="middle" >10.15</td><td align="center" valign="middle" >8.30</td><td align="center" valign="middle" >6.97</td><td align="center" valign="middle" >5.8</td></tr><tr><td align="center" valign="middle" >Average Distance</td><td align="center" valign="middle" >3.33</td><td align="center" valign="middle" >3.10</td><td align="center" valign="middle" >3.41</td><td align="center" valign="middle" >3.31</td><td align="center" valign="middle" >3.78</td></tr><tr><td align="center" valign="middle" >Diameter</td><td align="center" valign="middle" >9</td><td align="center" valign="middle" >9</td><td align="center" valign="middle" >10</td><td align="center" valign="middle" >9</td><td align="center" valign="middle" >12</td></tr><tr><td align="center" valign="middle" >Average Clustering Coefficient</td><td align="center" valign="middle" >0.16</td><td align="center" valign="middle" >0.23</td><td align="center" valign="middle" >0.16</td><td align="center" valign="middle" >0.18</td><td align="center" valign="middle" >0.11</td></tr></tbody></table></table-wrap><p>distribution follows a power-law curve. This property reflects the fact that in many real-life small-world networks there exist very few nodes with very high degrees, which also serve as hubs in the network, many more nodes with smaller degrees with an exponential tail. In our case, hubs serve as main ideas or words with very high emotional or economic impact and all other words have smaller importance and serve as background for the hubs. If one removes a node at random then probably nothing should happen to the robustness of the whole speech, since many nodes have small degrees. On the other hand, if a small number of hubs were deleted then speeches would collapse in small chunks of nodes.</p><p>It is not hard to check whether a network is a scale-free network by trying to fit its degree distribution to power law. We used the R statistical package [<xref ref-type="bibr" rid="scirp.75752-ref30">30</xref>] for all five networks and show our combined results in <xref ref-type="fig" rid="fig3">Figure 3</xref>, in log-log plots.</p><p>In <xref ref-type="fig" rid="fig3">Figure 3</xref>, we also show the computed alpha coefficient which in all cases is between two and three. From <xref ref-type="fig" rid="fig3">Figure 3</xref> and the accompanying computations, it is straightforward to see that all networks are scale-free ones. As already implied it is now obvious that when a political leader (or his/her speech-writer) prepares a speech, he usually uses a small number of main words and builds the rest of his speech around these main words-ideas. This should be done in every speech within the same pre-electoral period, or else the general ideas will not be distributed evenly to the population. If we want to find out which are these main ideas we can rank all nodes according to their degree centrality (see Section 4).</p><p>Small-world, scale-free networks are common in real-life networks. Recently it</p><fig id="fig2"  position="float"><label><xref ref-type="fig" rid="fig3">Figure 3</xref></label><caption><title> Fitting the power-law</title></caption><graphic mimetype="image"   position="float"  xlink:type="simple"  xlink:href="http://html.scirp.org/file/5-2680148x4.png"/></fig><p>has been proven that they exist also in discourse networks. Both [<xref ref-type="bibr" rid="scirp.75752-ref31">31</xref>] and [<xref ref-type="bibr" rid="scirp.75752-ref32">32</xref>] found that epic works like The Iliad are scale-free networks with respect to the actor’s interactions. The same results come from [<xref ref-type="bibr" rid="scirp.75752-ref33">33</xref>] regarding modern literature. The scale-free property is valid in various levels, from interactions of actors to interactions of words within the text. However it is very well expected that other types of discourse, like poetry, cannot hold such a property.</p></sec><sec id="s3"><title>3. Community Structures</title><p>In Social Network Analysis, different groupings of nodes have been extensively introduced and used over the last decades. These grouping usually follow quite strict rules, thus resulting in rather hard to calculate, sometimes overlapping, groupings (see [<xref ref-type="bibr" rid="scirp.75752-ref34">34</xref>] for a full presentation). Recently [<xref ref-type="bibr" rid="scirp.75752-ref35">35</xref>] introduced the idea of communities of nodes. The main idea is that a group of nodes belong to the same community if more links exist between them than with other nodes, outside of this community. Reference [<xref ref-type="bibr" rid="scirp.75752-ref36">36</xref>] introduced a number of proposed algorithms to calculate communities. Furthermore, the metric of modularity has been introduced as a measurement that corresponds to the quality of grouping. If modularity is high then nodes tend to group in clearly bounded communities.</p><p>We used NodeXL’s feature to calculate the community structures of all our networks and present our results and the relevant discussion in this Section.</p><p>In <xref ref-type="table" rid="table2">Table 2</xref> we show the most important communities in MrTsipras’ network, which bears a modularity of 0.24. We also list the most central words with respect to PageRank algorithm within each community.</p><p>Community 1 mainly deals with the proposed political program and plan of SYRIZA and contains many economic words like development, economy, farmer, work, negotiation, product, production, business, worker, unemployed, tax, market, investment, liquidity. Community 2 refers to the contrast between SYRIZA (node we) and its political opponents. Community 3 reflects an opening to the Greek people and society who are called to support SYRIZA in the elections. Community 4 focuses on some important problems faced by the country (crisis, austerity, tax evasion, and refugees). Furthermore, there exist (but not included in <xref ref-type="table" rid="table2">Table 2</xref>) some smaller but distinct groups of 73 up to 116 nodes. Community 5 contains certain SYRIZA government’s legislative interventions to rehire employees and protect primary residence, Community 6 deals with local</p>
<table-wrap id="table2" >
<label><xref ref-type="table" rid="table2">Table 2</xref></label>
<caption><title> Communities and most important nodes in Mr Tsipras’ network</title></caption><table><tbody><thead><tr><th align="center" valign="middle" >Community/ Number of Nodes</th><th align="center" valign="middle" >Central Nodes with Respect to Page Rank</th></tr></thead><tr><td align="center" valign="middle" >1/955</td><td align="center" valign="middle" >Political, new, public, program, social, plan, work, system, interest …</td></tr><tr><td align="center" valign="middle" >2/860</td><td align="center" valign="middle" >We, opponent, ND, old, interweaving of interests, debt, agreement, establishment, lender, corruption, authority, bank …</td></tr><tr><td align="center" valign="middle" >3/756</td><td align="center" valign="middle" >Whole, to have, the people, SYRIZA, no, you, I, Greece, citizen, Greek, battle, I can …</td></tr><tr><td align="center" valign="middle" >4/534</td><td align="center" valign="middle" >To be, great, country, other, crisis, many, problem, austerity, to confront …</td></tr></tbody></table></table-wrap><p>issues, while Community 7 with the migrant issue. In the ranking, node we is by far the most important in the network.</p><p><xref ref-type="table" rid="table3">Table 3</xref> shows the most important (central) nodes within the four larger com- munities for MrMeimarakis’ speeches. The network’s modularity is computed to be 0.21.</p><p>In Community 1 the political and economic program of New Democracy is developed with positive words, while in Community 2 the speaker’s personal tone is evident and his main objective is to denounce the policy of the SYRIZA- ANEL government (in Meimarakis and Kammenos networks the pronoun I is in the top five in the ranking of words, higher than in the other networks). In Community 3 the speaker addresses to Greek citizens and voters and urges them to choose a government of New Democracy rather than SYRIZA. In Community 4 node, we are dominant and MrMeimarakis speaks sometimes as a representative of his party and sometimes like an exponent of the Greek people to feature collective actions and collective emotions. As in Mr. Tsipras’ network, there are a few smaller groups of 50-100 nodes each; Community 5 stands out for its structure, as it contains the references to amounts of money and financial resources. Regarding nodes’ ranking, word we holds the first place, while Tsipras is especially high, at the third place.</p><p>In <xref ref-type="table" rid="table4">Table 4</xref>, we list the five larger Communities for MrKoutsoumbas’ network together with some representative words. Modularity here is 0.25.</p><p>In Community 1, all the other parties and the new memorandum are the focus of intense criticism. In Community 2, which contains most of the financial words,</p>
<table-wrap id="table3" ><label><xref ref-type="table" rid="table3">Table 3</xref></label><caption><title> Communities and most important nodes in MrMeimarakis’ network</title></caption><table><tbody><thead><tr><th align="center" valign="middle" >Community/ Number of Nodes</th><th align="center" valign="middle" >Central Nodes with Respect to Page Rank</th></tr></thead><tr><td align="center" valign="middle" >1/776</td><td align="center" valign="middle" >To be, new, to have, political, to exist, great, other, national, no, social …</td></tr><tr><td align="center" valign="middle" >2/639</td><td align="center" valign="middle" >Tsipras, I, opponent, woman, child, still/besides, to put, to create, world/people, human …</td></tr><tr><td align="center" valign="middle" >3/628</td><td align="center" valign="middle" >Whole, citizen, country, ND, you, Greece, government, to want, SYRIZA, to tell, must …</td></tr><tr><td align="center" valign="middle" >4/442</td><td align="center" valign="middle" >We, much, danger, start/principle, to cause, Thessaloniki, to pass, serious, fight, hope …</td></tr></tbody></table></table-wrap><table-wrap id="table4" ><label><xref ref-type="table" rid="table4">Table 4</xref></label><caption><title> Communities and most important nodes in MrKoutsoumbas’ network</title></caption><table><tbody><thead><tr><th align="center" valign="middle" >Community/ Number of Nodes</th><th align="center" valign="middle" >Central Nodes with Respect to Page Rank</th></tr></thead><tr><td align="center" valign="middle" >1/701</td><td align="center" valign="middle" >New, SYRIZA, government, memorandum, Popular Unity …</td></tr><tr><td align="center" valign="middle" >2/608</td><td align="center" valign="middle" >To be, the people, to have, I can, EU, popular, political, country, great, capitalistic …</td></tr><tr><td align="center" valign="middle" >3/603</td><td align="center" valign="middle" >We, opponent, KKE, party, Golden Dawn, system, you …</td></tr><tr><td align="center" valign="middle" >4/287</td><td align="center" valign="middle" >Whole, other, many, speech/reason, such, various, small …</td></tr><tr><td align="center" valign="middle" >5/131</td><td align="center" valign="middle" >War, indeed, migrant, region, small and medium, lie …</td></tr></tbody></table></table-wrap><p>the alternative proposal of KKE for the economy is developed in response to the world of capitalism, monopolies and EU. In Community 3 voters are called to choose KKE as the only solution and not to support rival parties, especially Golden Dawn. Community 5 mainly deals with the issue of wars in the Middle East and the migrant wave. Finally, Community 4 appears balanced in economic, political and local references. The most important node here is the verb to be, followed by the people in second place.</p><p><xref ref-type="table" rid="table5">Table 5</xref> shows MrKammenos’ network from party ANEL. This political party stands to the right of the political spectrum. However, it formed a coalition in government after the January and September 2015 elections. The modularity index here is 0.28.</p><p>Communities 1 and 3 have a strong political character: in Community 1 collective actions, decisions and attitudes of ANEL during coalition government are presented and explained, while in Community 3 the personal element dominates, as the leader addresses to his audience in first person and presents personal thoughts and actions. In Community 2 economic issues are mainly raised, such as the taxation of farmers, the return of deposits from abroad and the financial scandals of opponents, while Community 5 regards tax issues. In Community 4 the focus is on the country, the motherland and Greece’s agreement with creditors, while Community 6 deals with the geopolitical position of Greece and the tourism issue. Finally, the preponderant node in the ranking is we.</p><p>In <xref ref-type="table" rid="table6">Table 6</xref> we list the five larger Communities together with some representative words for MrsGennimata’s network. Modularity was computed to be 0.31.</p><p>Community 1 is characterized by the attack against SYRIZA and ND, particu-</p><table-wrap id="table5" ><label><xref ref-type="table" rid="table5">Table 5</xref></label><caption><title> Communities and most important nodes in MrKammenos’ network</title></caption><table><tbody><thead><tr><th align="center" valign="middle" >Community/ Number of Nodes</th><th align="center" valign="middle" >Central Nodes with Respect to Page Rank</th></tr></thead><tr><td align="center" valign="middle" >1/326</td><td align="center" valign="middle" >We, political, Greek, to do, the people, to give, first …</td></tr><tr><td align="center" valign="middle" >2/288</td><td align="center" valign="middle" >Not, farmer, euro (numbers), money, to go, to enter, PASOK …</td></tr><tr><td align="center" valign="middle" >3/279</td><td align="center" valign="middle" >To be, I, I can, to tell, you, ANEL, Greek, government …</td></tr><tr><td align="center" valign="middle" >4/256</td><td align="center" valign="middle" >Whole, country, other, to take, nobody, must, agreement …</td></tr><tr><td align="center" valign="middle" >5/141</td><td align="center" valign="middle" >Opponent, to have, business, to pay, person, interest, VAT, ENFIA, tax …</td></tr><tr><td align="center" valign="middle" >6/104</td><td align="center" valign="middle" >Greece, Europe, Hellenism, tourist, relation, Middle East …</td></tr></tbody></table></table-wrap><table-wrap id="table6" ><label><xref ref-type="table" rid="table6">Table 6</xref></label><caption><title> Communities and most important nodes in MrsGenimata’ network</title></caption><table><tbody><thead><tr><th align="center" valign="middle" >Community/ Number of Nodes</th><th align="center" valign="middle" >Central Nodes with Respect to Page Rank</th></tr></thead><tr><td align="center" valign="middle" >1/393</td><td align="center" valign="middle" >To be, Tsipras, SYRIZA, ND, I, government, to do, election …</td></tr><tr><td align="center" valign="middle" >2/365</td><td align="center" valign="middle" >New, great, Greek, social, every, public, system …</td></tr><tr><td align="center" valign="middle" >3/314</td><td align="center" valign="middle" >We, PASOK, whole, country, citizen, political, Greece …</td></tr><tr><td align="center" valign="middle" >4/133</td><td align="center" valign="middle" >You, member, space, democratic, cooperation …</td></tr><tr><td align="center" valign="middle" >5/126</td><td align="center" valign="middle" >Without, role, strategic, respect, potential …</td></tr></tbody></table></table-wrap><p>larly for their attitude towards memorandum, while in Community 2 PASOK’s program and proposals for the economy and the state are developed. Community 3 is dedicated to PASOK party and its relationship with the country and citizens. In Community 4 the speaker addresses to the audience on issues concerning them and at the same time she issues a call for concurrence to the center-leftists. Community 5 includes a series of rhetorical questions that invite people to ponder how Greece would be without the work of PASOK and a series of properties that should (like respect, trust, justice) or should not (corruption, exclusion) characterize politics. The most important word here is computed to be we.</p></sec><sec id="s4"><title>4. Central Nodes Regarding Economy</title><p>Nodes are important in a variety of ways through special metrics. In this paper, five of these metrics were computed, namely: degree, closeness, between ness and eigenvector centralities, together with PageRank metric. The actual formal definitions of the above metrics can be found in [<xref ref-type="bibr" rid="scirp.75752-ref34">34</xref>] .</p><p>Network metrics can facilitate qualitative analysis and comparisons over time and between parties. For this purpose, in <xref ref-type="table" rid="table7">Table 7</xref> we rank the fifteen most important nodes (after PageRank) regarding economic issues. For example, word agreement is the first word in this context for MrTsipras’ network among all the network’s words. We also include <xref ref-type="table" rid="table8">Table 8</xref> which shows the analogous ranking for the January 2015 elections, calculated in the same manner as in September’s elections. In <xref ref-type="table" rid="table8">Table 8</xref>, MrSamaras’ network represents New Democracy, sinceMr Samaras was the leader of this party (and prime minister in the previous period).</p><table-wrap id="table7" ><label><xref ref-type="table" rid="table7">Table 7</xref></label><caption><title> Ranking of words about economy (September 2015 elections)</title></caption><table><tbody><thead><tr><th align="center" valign="middle" >Rank</th><th align="center" valign="middle" >Tsipras</th><th align="center" valign="middle" >Meimarakis</th><th align="center" valign="middle" >Koutsoumbas</th><th align="center" valign="middle" >Kammenos</th><th align="center" valign="middle" >Genimata</th></tr></thead><tr><td align="center" valign="middle" >1</td><td align="center" valign="middle" >agreement</td><td align="center" valign="middle" >farmer</td><td align="center" valign="middle" >memorandum</td><td align="center" valign="middle" >farmer</td><td align="center" valign="middle" >farmer</td></tr><tr><td align="center" valign="middle" >2</td><td align="center" valign="middle" >debt/duty</td><td align="center" valign="middle" >development</td><td align="center" valign="middle" >worker</td><td align="center" valign="middle" >agreement</td><td align="center" valign="middle" >development</td></tr><tr><td align="center" valign="middle" >3</td><td align="center" valign="middle" >creditor</td><td align="center" valign="middle" >economy</td><td align="center" valign="middle" >capitalistic</td><td align="center" valign="middle" >money</td><td align="center" valign="middle" >memorandum</td></tr><tr><td align="center" valign="middle" >4</td><td align="center" valign="middle" >development</td><td align="center" valign="middle" >memorandum</td><td align="center" valign="middle" >farmer</td><td align="center" valign="middle" >debt/duty</td><td align="center" valign="middle" >business</td></tr><tr><td align="center" valign="middle" >5</td><td align="center" valign="middle" >farmer</td><td align="center" valign="middle" >business</td><td align="center" valign="middle" >development</td><td align="center" valign="middle" >memorandum</td><td align="center" valign="middle" >investment</td></tr><tr><td align="center" valign="middle" >6</td><td align="center" valign="middle" >economy</td><td align="center" valign="middle" >bank</td><td align="center" valign="middle" >capital</td><td align="center" valign="middle" >list</td><td align="center" valign="middle" >production</td></tr><tr><td align="center" valign="middle" >7</td><td align="center" valign="middle" >agricultural</td><td align="center" valign="middle" >tax</td><td align="center" valign="middle" >unemployed</td><td align="center" valign="middle" >business</td><td align="center" valign="middle" >productive</td></tr><tr><td align="center" valign="middle" >8</td><td align="center" valign="middle" >work</td><td align="center" valign="middle" >resource</td><td align="center" valign="middle" >increase</td><td align="center" valign="middle" >pay</td><td align="center" valign="middle" >economy</td></tr><tr><td align="center" valign="middle" >9</td><td align="center" valign="middle" >product</td><td align="center" valign="middle" >investment</td><td align="center" valign="middle" >working</td><td align="center" valign="middle" >development</td><td align="center" valign="middle" >agricultural</td></tr><tr><td align="center" valign="middle" >10</td><td align="center" valign="middle" >business</td><td align="center" valign="middle" >job</td><td align="center" valign="middle" >job</td><td align="center" valign="middle" >bank</td><td align="center" valign="middle" >product</td></tr><tr><td align="center" valign="middle" >11</td><td align="center" valign="middle" >economic</td><td align="center" valign="middle" >economic</td><td align="center" valign="middle" >production</td><td align="center" valign="middle" >tourist</td><td align="center" valign="middle" >reduction</td></tr><tr><td align="center" valign="middle" >12</td><td align="center" valign="middle" >worker</td><td align="center" valign="middle" >unemployment</td><td align="center" valign="middle" >profit</td><td align="center" valign="middle" >market</td><td align="center" valign="middle" >resource</td></tr><tr><td align="center" valign="middle" >13</td><td align="center" valign="middle" >productive</td><td align="center" valign="middle" >capital control</td><td align="center" valign="middle" >capitalist</td><td align="center" valign="middle" >cruise</td><td align="center" valign="middle" >employment</td></tr><tr><td align="center" valign="middle" >14</td><td align="center" valign="middle" >production</td><td align="center" valign="middle" >NSRF</td><td align="center" valign="middle" >economy</td><td align="center" valign="middle" >expense</td><td align="center" valign="middle" >market</td></tr><tr><td align="center" valign="middle" >15</td><td align="center" valign="middle" >bank</td><td align="center" valign="middle" >reduction</td><td align="center" valign="middle" >pay</td><td align="center" valign="middle" >tourism</td><td align="center" valign="middle" >touristic</td></tr></tbody></table></table-wrap><table-wrap id="table8" ><label><xref ref-type="table" rid="table8">Table 8</xref></label><caption><title> Ranking of words about economy (January 2015 elections)</title></caption><table><tbody><thead><tr><th align="center" valign="middle" >Rank</th><th align="center" valign="middle" >Tsipras</th><th align="center" valign="middle" >Samaras</th><th align="center" valign="middle" >Koutsoumbas</th><th align="center" valign="middle" >Kammenos</th></tr></thead><tr><td align="center" valign="middle" >1</td><td align="center" valign="middle" >memorandum</td><td align="center" valign="middle" >development</td><td align="center" valign="middle" >worker</td><td align="center" valign="middle" >business</td></tr><tr><td align="center" valign="middle" >2</td><td align="center" valign="middle" >debt/duty</td><td align="center" valign="middle" >investment</td><td align="center" valign="middle" >working</td><td align="center" valign="middle" >debt/duty</td></tr><tr><td align="center" valign="middle" >3</td><td align="center" valign="middle" >austerity</td><td align="center" valign="middle" >debt/duty</td><td align="center" valign="middle" >unemployed</td><td align="center" valign="middle" >tourist</td></tr><tr><td align="center" valign="middle" >4</td><td align="center" valign="middle" >prog. Thess.</td><td align="center" valign="middle" >tax</td><td align="center" valign="middle" >capital</td><td align="center" valign="middle" >taxation</td></tr><tr><td align="center" valign="middle" >5</td><td align="center" valign="middle" >development</td><td align="center" valign="middle" >business</td><td align="center" valign="middle" >monopoly</td><td align="center" valign="middle" >farmer</td></tr><tr><td align="center" valign="middle" >6</td><td align="center" valign="middle" >troika</td><td align="center" valign="middle" >pay</td><td align="center" valign="middle" >job</td><td align="center" valign="middle" >pay</td></tr><tr><td align="center" valign="middle" >7</td><td align="center" valign="middle" >economy</td><td align="center" valign="middle" >reform</td><td align="center" valign="middle" >debt/duty</td><td align="center" valign="middle" >bank</td></tr><tr><td align="center" valign="middle" >8</td><td align="center" valign="middle" >bank</td><td align="center" valign="middle" >economy</td><td align="center" valign="middle" >memorandum</td><td align="center" valign="middle" >tax</td></tr><tr><td align="center" valign="middle" >9</td><td align="center" valign="middle" >agricultural</td><td align="center" valign="middle" >reduction</td><td align="center" valign="middle" >capitalistic</td><td align="center" valign="middle" >reduce</td></tr><tr><td align="center" valign="middle" >10</td><td align="center" valign="middle" >tax</td><td align="center" valign="middle" >money</td><td align="center" valign="middle" >salary</td><td align="center" valign="middle" >pensioner</td></tr><tr><td align="center" valign="middle" >11</td><td align="center" valign="middle" >economic</td><td align="center" valign="middle" >market</td><td align="center" valign="middle" >unemployment</td><td align="center" valign="middle" >creditor</td></tr><tr><td align="center" valign="middle" >12</td><td align="center" valign="middle" >farmer</td><td align="center" valign="middle" >reduce</td><td align="center" valign="middle" >development</td><td align="center" valign="middle" >pipeline</td></tr><tr><td align="center" valign="middle" >13</td><td align="center" valign="middle" >pension</td><td align="center" valign="middle" >money</td><td align="center" valign="middle" >pension</td><td align="center" valign="middle" >building</td></tr><tr><td align="center" valign="middle" >14</td><td align="center" valign="middle" >productive</td><td align="center" valign="middle" >deficit</td><td align="center" valign="middle" >economy</td><td align="center" valign="middle" >development</td></tr><tr><td align="center" valign="middle" >15</td><td align="center" valign="middle" >to tax</td><td align="center" valign="middle" >income</td><td align="center" valign="middle" >tax</td><td align="center" valign="middle" >fortune</td></tr></tbody></table></table-wrap><p>PASOK was not represented in that study.</p><p>From <xref ref-type="table" rid="table7">Table 7</xref> we can identify the economic issues in which the political leaders put more emphasis on the pre-election period of September. Words farmer and agreement (preferred by the coalition government) or memorandum (favored by the opposition) are at the top pentad in all networks. Word development is also prominent and is found within the ten first in all networks. Subsequently, words economy and business are common in four of the networks, while production and bank in three. Compared with the corresponding <xref ref-type="table" rid="table8">Table 8</xref> for the January elections, in which debt was the dominant word, there has been a shift of focus of the speakers towards the issue of Greece’s third bailout agreement and the measures it includes, especially for farmers. Word debt still remains in a high position in Tsipras’ and Kammenos’ networks (side of the coalition), while it has subsided to lower positions in opposition networks. Also, words tax and pension, which stood out in January ranking, are now lower (pension is even absent from <xref ref-type="table" rid="table7">Table 7</xref>). On the contrary, words development, economy and bank remain important issues in both elections.</p><p>The network structure and the way the words and therefore their concepts interact with each other can reveal the main political and economic positions of the party leaders, the differences between them, as well as possible changes and shifts in comparison with January elections. Thus, in Tsipras’ network it is observed that:</p><p>・ Compared with past election’s top ranking, words memorandum, pension, program of Thessaloniki, to tax, troika and tax are missing now; indeed, the last three have dropped to much lower positions in the overall ranking (1108, 1344 and 1858 respectively).</p><p>・ At the first place, memorandum has now been superseded by agreement. However, unlike memorandum, which was associated with negative words, agreement forms dyads with a series of verbs that emphasize its positive aspects (prevent, reverse, allow, terminate, finish, achieve, deal with, secure, save). Simultaneously, agreement makes dyads with other words that acknowledge the difficult points of the agreement (burden, negative, difficulty, condition, obligation, effect) or underline the belief that political opponents could not have brought a better deal (opponent, ND, Meimarakis, best, worst).</p><p>・ Word farmer has risen in the ranking from 12 to 5 and is directly connected with words expressing an intention of supporting farmers, particularly on the issue of taxation (such as protect, support, relief, facilitation, income, expense, taxation, over taxation, fair, countervailing).</p><p>・ Word debt remains high and is linked to words that indicate the party’s intentions of public debt adjustment (depreciation, reduce, restructuring, interest rate), the size and the consequences of the debt problem (onerous, vice, burden, commitment, troublesome, exorbitant, pit, loop), and the criticism that the opponents incurred debts and argued incorrectly that Greek debt was sustainable (opponent, ND, create, multiply, asseverate, sustainable). Furthermore, other linked words refer to the belief that the rich must pay their debts (rich, debtor, media owner), whereas the debts of those in difficulty should be settled (settle, natural person, discharge).</p><p>In September’s elections New Democracy had a new leader and in comparison with the January list, it seems that the top fifteen economic vocabulary now appears at lower positions in the overall ranking (namely from positions 23 - 109 in January to 56 - 181 now), suggesting perhaps that MrMeimarakis preferred to give greater emphasis to the political context than Mr Samaras did. Additionally, words debt, pay, reform, money, income, deficit are missing from the current top list. In Meimarakis’ network:</p><p>・ Making a new entry, word farmer lies at the top and forms dyads with problem, taxation, tax, nontaxable, devastate, destruction, impinge, be unfair, subsidy (to highlight the problems that arise due to the required measures of the agreement), with Tsipras, cheat, recall (to criticize the attitude of the government) and with the word no (to stress that the new measures for farmers cannot be accepted).</p><p>・ Unlike MrTsipras, MrMeimarakis selects the term memorandum and tries to emphasize the negative aspects of the new agreement (new, worse, painful, bind), to remind the audience of MrTsipras’ earlier statements about the abolition of the memorandum (Tsipras, abolish, rip, tearing up, change, finish) and to associate his political opponents with the signing of the memorandum (opponent, vote, bring, apply, sign).</p><p>・ The words bank and capital control are new entries and show an effort of highlighting the problems that have arisen due to the increased deposits withdrawals and imposition of capital controls. Typical are the words connected with bank (opponent, close, closed, collapse, charge, cost, 25 billion, recapitalization, withdraw), and with capital control (to trouble, strangle, drive off, stop, business, unemployment, worse). Other linked words (purpose, establish, underestimate) concern speaker’s criticism that MrTsipras did not establish a special purpose bank, as promised.</p><p>The ranking in Koutsoumbas’ network displays great similarities with that of the January elections. Even the words of the January list that are missing now can be found a little lower, within the first twenty five. At the first place, worker has now been superseded by memorandum, which pairs with words that not only reveal the KKE party’s views about those who are responsible for the memorandum (SYRIZA, Tsipras, ND, Meimarakis, EU, system, government, troika, boss) and the negative effects of the measures (guillotine, barbarian, cruel, sacrifice, anti-popular, virulent, bankrupt, loss, burden, onerous, fire, VAT), but also denote an attitude of fight (release, combat, end, oppose, conflict, fight). As in January, so now, it is evident in the top ranking the influence of Marxist theory on the structure of economy and the conflict between two worlds, the workers, the unemployed and the farmers against the domain of big capital. This contrast is reflected in the following words that form pairs with capitalist and capitalistic: exploitation, brutality, jungle, altar, burden, antipopular, imperialist, competition, crisis, monopoly, EU, system, power, banker, business, property, market, Golden Dawn, profit, profitability, submission, support, rupture, overthrow.</p><p>In Kammenos’ network several changes are distinguished regarding the top ranks. The most prominent word is farmer; connected words deal with farmers’ issues, such as their taxation, debt cancellation, income, expenses and registration. Word agreement is accompanied by words that justify the decision of ANEL party to support the agreement and refer to its positive and negative points (succeed, achieve, wrong, upside-down) and the issue of the application of English law. Word memorandum continues to be associated with political opponents in a negative way (decrepit, impoverish, professional, boast, slump). Word debt remains at high ranks and is directly linked to deletion, elongation, opponent, settle, borrower, farmer, repayment, odious, disgraceful, serve. Finally, as in January, tourism issues are emphasised with the simultaneous presence of tourist, tourism and cruise in <xref ref-type="table" rid="table7">Table 7</xref> while the word list refers to speaker’s allegations of financial irregularities (combined with Lagarde, Luxembourg, Siemens, Christoforakos).</p><p>Finally, in MrsGennimata’s network the most important node is farmer; adjacent nodes refer to the financial burden of the measures of the agreement for the farmers and to their taxation, training and access to the health system. Node memorandum is associated with words that express criticism of SYRIZA and ND for their stance on the issue of the memorandum and describe PASOK’s main target: exit from the crisis and disengagement from the memorandum through a national plan and a national renegotiation team.</p></sec><sec id="s5"><title>5. Conclusions and further research</title><p>In this paper, we tried to analyze Greek political language with the use of SNA. We utilised data from the pre-elections speeches of five political leaders from the 20th of September 2015 general elections in order to form word-based networks. Then, we used network metrics to detect communities and the most prominent words and subjects for each leader, particularly on the topic of the economy. Finally, we showed that all these networks were small-world and scale-free ones.</p><p>This approach could be fruitful for those who are interested to explore how politicians assess significant issues and formulate their objectives and election strategy. The network structure and the relations between the words can underline the basic positions of the rival parties. Network metrics can be used to identify and rank the central nodes that represent the ideas in which the political leaders put more emphasis. The locality of the nodes might also expose additional unknown and implicit context. Communities can highlight broader ideas and pre-electoral tactics. Moreover, the different structural patterns can show graphically the differences among political parties. For example, communities and central nodes in MrKoutsoumbas’ network are very different, reflecting the influence of the communist theory. Finally, checking for small-world and scale- free properties can discover if there are any vulnerabilities (hubs).</p><p>In the Greek case particularly, we inspected a focal shift of the main problem of the country from national debt to the new deal with the lenders and the packet of measurements included, especially for farmers. Furthermore, the government coalition uses a type of vocabulary that enhances positive aspects of the deal, while the opposition does exactly the opposite. Issues concerning growth, businesses, productivity and the banking system are located in high ranks in leaders’ agendas. Finally, groupings are similar in the sense that all leaders mainly choose three main directions: the presentation of their programs, attacking their opponents and appealing to the people’s sentiment for support.</p><p>We finish our paper with some proposals for future research. This approach can be exploited in the long term for making comparisons between the political parties and detecting possible changes in their views and positions. Indeed, in Section 4, we made a comparison with the January elections with interesting results. A future research may focus on the political vocabulary in order to investigate each party’s position along the political spectrum; or on the negative vocabulary, to study the way in which politicians attack their opponents. Furthermore, a potential future study can: consider the number of links between two words; create and analyze directed networks; investigate for the existence of different motifs in the networks of the political leaders or how their structure may relate with successful strategies. Finally, it can contribute to the finding and development of an effective automated tool which would be able to reduce the time of pre-processing.</p></sec><sec id="s6"><title>Cite this paper</title><p>Kydros, D. and Anastasiadis, A. (2017) Greek Political Lan- guage during the Economic Crisis―A Net- work Analytic Approach. Social Networking, 6, 164-180. https://doi.org/10.4236/sn.2017.62010</p></sec></body><back><ref-list><title>References</title><ref id="scirp.75752-ref1"><label>1</label><mixed-citation publication-type="other" xlink:type="simple">Borzel, T.A. (1998) Organizing Babylon: On the Different Conceptions of Policy Networks. Public Administration, 76, 253-273.  
https://doi.org/10.1111/1467-9299.00100</mixed-citation></ref><ref id="scirp.75752-ref2"><label>2</label><mixed-citation publication-type="other" xlink:type="simple">Laumann, E.O. and Knoke, D. (1987) The Organizational State: Social Choice in National Policy Domains. University of Wisconsin Press, Madison.</mixed-citation></ref><ref id="scirp.75752-ref3"><label>3</label><mixed-citation publication-type="book" xlink:type="simple">Kenis, P. and Schneider, V. (1991) Policy Networks and Policy Analysis: Scrutinizing a New Analytical Toolbox. In: Marin, B. and Mayntz, R., Eds., Policy Networks: Empirical Evidence and Theoretical Considerations, Campus Verlag, Frankfurt am Main, 25-59.</mixed-citation></ref><ref id="scirp.75752-ref4"><label>4</label><mixed-citation publication-type="book" xlink:type="simple">Pavan, E. (2014) Social Networks and Politics. In: Alhajj, R. and Rokne, J., Eds., Encyclopedia of Social Network Analysis and Mining, Springer, New York, 1893-1901. https://doi.org/10.1007/978-1-4614-6170-8_39</mixed-citation></ref><ref id="scirp.75752-ref5"><label>5</label><mixed-citation publication-type="book" xlink:type="simple">Knoke, D. (2011) Policy Networks. In: Scott, J. and Carrington, P.J., Eds., The Sage Handbook of Social Network Analysis, Sage, London, 210-222.</mixed-citation></ref><ref id="scirp.75752-ref6"><label>6</label><mixed-citation publication-type="book" xlink:type="simple">Diani, M. (2011) Social Movements and Collective Action. In: Scott, J. and Carrington, P.J., Eds., The Sage Handbook of Social Network Analysis, Sage, London, 223-235.</mixed-citation></ref><ref id="scirp.75752-ref7"><label>7</label><mixed-citation publication-type="other" xlink:type="simple">Leifeld, P. (2007) Policy Networks: A Citation Analysis of the Quantitative Literature. Diplomarbeit, University of Konstanz, Konstanz.  
http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-26631</mixed-citation></ref><ref id="scirp.75752-ref8"><label>8</label><mixed-citation publication-type="other" xlink:type="simple">Lazer, D. (2011) Networks in Political Science: Back to the Future. Political Science and Politics, 44, 61-68. https://doi.org/10.1017/S1049096510001873</mixed-citation></ref><ref id="scirp.75752-ref9"><label>9</label><mixed-citation publication-type="book" xlink:type="simple">Schneider, V. and Ollmann, J.K. (2013) Punctuations and Displacements in Policy Discourse: The Climate Change Issue in Germany, 2007-2010. In: Silvern, S. and Young, S., Eds., Environmental Change and Sustainability, InTech, Rijeka, 157-183.  
https://doi.org/10.5772/54302</mixed-citation></ref><ref id="scirp.75752-ref10"><label>10</label><mixed-citation publication-type="other" xlink:type="simple">Stoddart, M.C.J. and Tindall, D.B. (2015) Canadian News Media and the Cultural Dynamics of Multilevel Climate Governance. Environmental Politics, 24, 401-422.  
https://doi.org/10.1080/09644016.2015.1008249</mixed-citation></ref><ref id="scirp.75752-ref11"><label>11</label><mixed-citation publication-type="other" xlink:type="simple">Rantala, S. and Di Gregorio, M. (2014) Multistakeholder Environmental Governance in Action: REDD+ Discourse Coalitions in Tanzania. Ecology and Society, 19, 66. https://doi.org/10.5751/ES-06536-190266</mixed-citation></ref><ref id="scirp.75752-ref12"><label>12</label><mixed-citation publication-type="other" xlink:type="simple">Rinscheid, A. (2015) Crisis, Policy Discourse, and Major Policy Change: Exploring the Role of Subsystem Polarization in Nuclear Energy Policymaking. European Policy Analysis, 1, 34-70. https://doi.org/10.18278/epa.1.2.3</mixed-citation></ref><ref id="scirp.75752-ref13"><label>13</label><mixed-citation publication-type="other" xlink:type="simple">Leifeld, P. (2013) Reconceptualizing Major Policy Change in the Advocacy Coalition Framework: A Discourse Network Analysis of German Pension Politics. Policy Studies Journal, 41, 169-198. https://doi.org/10.1111/psj.12007</mixed-citation></ref><ref id="scirp.75752-ref14"><label>14</label><mixed-citation publication-type="other" xlink:type="simple">Muller, A. (2015) Using Discourse Network Analysis to Measure Discourse Coalitions: Towards a Formal Analysis of Political Discourse. World Political Science, 11, 377-404. https://doi.org/10.1515/wps-2015-0009</mixed-citation></ref><ref id="scirp.75752-ref15"><label>15</label><mixed-citation publication-type="other" xlink:type="simple">Leifeld, P. and Haunss, S. (2012) Political Discourse Networks and the Conflict over Software Patents in Europe. European Journal of Political Research, 51, 382-409.  
https://doi.org/10.1111/j.1475-6765.2011.02003.x</mixed-citation></ref><ref id="scirp.75752-ref16"><label>16</label><mixed-citation publication-type="other" xlink:type="simple">Hurka, S. and Nebel, K. (2013) Framing and Policy Change after Shooting Rampages: A Comparative Analysis of Discourse Networks. Journal of European Public Policy, 20, 390-406. https://doi.org/10.1080/13501763.2013.761508</mixed-citation></ref><ref id="scirp.75752-ref17"><label>17</label><mixed-citation publication-type="book" xlink:type="simple">Leifeld, P. (Forthcoming) Discourse Network Analysis: Policy Debates as Dynamic Net-works. In: Victor, J.N., Lubell, M. and Montgomery, A.H., Eds., The Oxford Handbook of Political Networks, Oxford University Press, New York.</mixed-citation></ref><ref id="scirp.75752-ref18"><label>18</label><mixed-citation publication-type="other" xlink:type="simple">Van Atteveldt, W., Kleinnijenhuis, J. and Ruigrok, N. (2008) Parsing, Semantic Networks, and Political Authority Using Syntactic Analysis to Extract Semantic Relations from Dutch Newspaper Articles. Political Analysis, 16, 428-446.  
https://doi.org/10.1093/pan/mpn006</mixed-citation></ref><ref id="scirp.75752-ref19"><label>19</label><mixed-citation publication-type="book" xlink:type="simple">Diesner, J. and Carley, K.M. (2005) Revealing Social Structure from Texts: Meta-matrix Text Analysis as a Novel Method for Network Text Analysis. In: Narayanan, V.K. and Armstrong, D.J., Eds., Causal Mapping for Research in Information Technology, Idea Group, Hershey, 81-108.  
https://doi.org/10.4018/978-1-59140-396-8.ch004</mixed-citation></ref><ref id="scirp.75752-ref20"><label>20</label><mixed-citation publication-type="other" xlink:type="simple">Hunter, S. (2014) A Novel Method of Network Text Analysis. Open Journal of Modern Linguistics, 4, 350-366. https://doi.org/10.4236/ojml.2014.42028</mixed-citation></ref><ref id="scirp.75752-ref21"><label>21</label><mixed-citation publication-type="book" xlink:type="simple">Popping, R. (2000) Network Text Analysis. In: Popping, R., Ed., Computer-Assisted Text Analysis, Sage, London, 97-128. https://doi.org/10.4135/9781849208741.n6</mixed-citation></ref><ref id="scirp.75752-ref22"><label>22</label><mixed-citation publication-type="other" xlink:type="simple">Diesner, J. (2012) Uncovering and Managing the Impact of Methodological Choices for the Computational Construction of Socio-Technical Networks from Texts. PhD Thesis, Carnegie Mellon University, Pittsburgh.  
http://repository.cmu.edu/dissertations/194</mixed-citation></ref><ref id="scirp.75752-ref23"><label>23</label><mixed-citation publication-type="book" xlink:type="simple">Guo, L. (2016) Semantic Network Analysis, Mind Mapping and Visualization: A Methodological Exploration of the Network Agenda Setting Model. In: Guo, L. and McCombs, M., Eds., The Power of Information Networks: New Directions for Agenda Setting, Routledge, New York, 19-33.</mixed-citation></ref><ref id="scirp.75752-ref24"><label>24</label><mixed-citation publication-type="other" xlink:type="simple">Carley, K. (1993) Coding Choices for Textual Analysis: A Comparison of Content Analysis and Map Analysis. Sociological Methodology, 23, 75-126.  
https://doi.org/10.2307/271007</mixed-citation></ref><ref id="scirp.75752-ref25"><label>25</label><mixed-citation publication-type="other" xlink:type="simple">Kydros, D. and Anastasiadis, A. (2015) Political Language and Economy: A Network Analysis. MIBES Transactions, 9, 91-105.  
http://mtol.teilar.gr/vol9_2015/Kydros,%20Anastasiadis.pdf</mixed-citation></ref><ref id="scirp.75752-ref26"><label>26</label><mixed-citation publication-type="other" xlink:type="simple">Barabási, A.-L. and Albert, R. (1999) Emergence of Scaling in Random Networks. Science, 286, 509-512. https://doi.org/10.1126/science.286.5439.509</mixed-citation></ref><ref id="scirp.75752-ref27"><label>27</label><mixed-citation publication-type="other" xlink:type="simple">Watts, D.J. and Strogatz, S.H. (1998) Collective Dynamics of “Small-World” Networks. Nature, 393, 440-442. https://doi.org/10.1038/30918</mixed-citation></ref><ref id="scirp.75752-ref28"><label>28</label><mixed-citation publication-type="other" xlink:type="simple">Pardo, T.A.S., Antiqueira, L., Nunes, M.G.V., Oliveira Jr., O.N. and Costa, L.F. (2006) Modeling and Evaluating Summaries Using Complex Networks. Computational Processing of the Portuguese Language. Proceedings of the 7th International Workshop, Itatiaia, 13-17 May 2006, 1-10. https://doi.org/10.1007/11751984_1</mixed-citation></ref><ref id="scirp.75752-ref29"><label>29</label><mixed-citation publication-type="other" xlink:type="simple">Newman, M.E.J. (2003) The Structure and Function of Complex Networks. SIAM Review, 45, 167-256. https://doi.org/10.1137/S003614450342480</mixed-citation></ref><ref id="scirp.75752-ref30"><label>30</label><mixed-citation publication-type="other" xlink:type="simple">R Core Team (2016) R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing. Vienna. http://www.R-project.org/</mixed-citation></ref><ref id="scirp.75752-ref31"><label>31</label><mixed-citation publication-type="other" xlink:type="simple">Mac Carron, P. and Kenna, R. (2012) Universal Properties of Mythological Networks. Europhysics Letters, 99, 28002. https://doi.org/10.1209/0295-5075/99/28002</mixed-citation></ref><ref id="scirp.75752-ref32"><label>32</label><mixed-citation publication-type="other" xlink:type="simple">Kydros, D., Notopoulos, P. and Exarchos, E. (2015) Homer’s Iliad: A Social Network Analytic Approach. International Journal of Humanities and Arts Computing, 9, 115-132. https://doi.org/10.3366/ijhac.2015.0141</mixed-citation></ref><ref id="scirp.75752-ref33"><label>33</label><mixed-citation publication-type="other" xlink:type="simple">Kydros, D. and Anastasiadis, A. (2015) Social Network Analysis in Literature: The Case of the Great Eastern by A. Embirikos. Proceedings of the 5th European Congress of Modern Greek Studies of the European Society of Modern Greek Studies, 4, 681-702.  
http://www.eens.org/EENS_congresses/2014/kydros_dimitrios_and_anastasiadis_anastasios.pdf</mixed-citation></ref><ref id="scirp.75752-ref34"><label>34</label><mixed-citation publication-type="other" xlink:type="simple">Wasserman, S. and Faust, K. (1994) Social Network Analysis: Methods and Applications. Cambridge University Press, Cambridge.  
https://doi.org/10.1017/CBO9780511815478</mixed-citation></ref><ref id="scirp.75752-ref35"><label>35</label><mixed-citation publication-type="other" xlink:type="simple">Girvan, M. and Newman, M.E.J. (2002) Community Structure in Social and Biological Networks. Proceedings of the National Academy of Sciences of the United States of America, 99, 7821-7826. https://doi.org/10.1073/pnas.122653799</mixed-citation></ref><ref id="scirp.75752-ref36"><label>36</label><mixed-citation publication-type="other" xlink:type="simple">Blondel, V.D., Guillaume, J.-L., Lambiotte, R. and Lefebvre, E. (2008) Fast Unfolding of Communities in Large Networks. Journal of Statistical Mechanics: Theory and Experiment, 2008, P10008. https://doi.org/10.1088/1742-5468/2008/10/P10008</mixed-citation></ref></ref-list></back></article>