<?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.2017.64017</article-id><article-id pub-id-type="publisher-id">SN-78450</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>
 
 
  Social Media’s Perspective on Industry 4.0: A Twitter Analysis
 
</article-title></title-group><contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>İlker</surname><given-names>Güven Yilmaz</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>Doğuş</surname><given-names>Aygün</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>Zuhal</surname><given-names>Tanrikulu</given-names></name><xref ref-type="aff" rid="aff2"><sup>2</sup></xref><xref ref-type="corresp" rid="cor1"><sup>*</sup></xref></contrib></contrib-group><aff id="aff2"><addr-line>Department of Management Information Systems, Bogazici University, Istanbul, Turkey</addr-line></aff><aff id="aff1"><addr-line>Department of Informatics, Istanbul University, Istanbul, Turkey</addr-line></aff><author-notes><corresp id="cor1">* E-mail:<email>ilkerguvenyilmaz@gmail.com(İGY)</email>;<email>aygundogus@gmail.com(DA)</email>;<email>zuhal.tanrikulu@boun.edu.tr(ZT)</email>;</corresp></author-notes><pub-date pub-type="epub"><day>14</day><month>08</month><year>2017</year></pub-date><volume>06</volume><issue>04</issue><fpage>251</fpage><lpage>261</lpage><history><date date-type="received"><day>July</day>	<month>10,</month>	<year>2017</year></date><date date-type="rev-recd"><day>Accepted:</day>	<month>August</month>	<year>12,</year>	</date><date date-type="accepted"><day>August</day>	<month>15,</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>
 
 
  The development and change that has taken place in the industry recently entered a new phase in parallel with the developments in computer technology. This phase is referred as Industry 4.0. With Industry 4.0, companies are working to take advantage of information technology to increase profitability and productivity. Increasing use of social media in recent years has forced companies to show their presence on those platforms. Social media is a major source of meaningful information for companies because it contains large amounts of data. In this study, the top five companies operating in information technology (IT) research/consulting and the top five companies operating in enterprise resource planning (ERP) field were selected. Conclusions have been made based on the analysis of the tweets related to Industry 4.0.
 
</p></abstract><kwd-group><kwd>Social Media</kwd><kwd> Twitter</kwd><kwd> Text Mining</kwd><kwd> Industry 4.0</kwd></kwd-group></article-meta></front><body><sec id="s1"><title>1. Introduction</title><p>The concept of Industry 4.0 has emerged to express a new phase in industrial transformation. As the name suggests, this concept refers to fourth industrial revolution. The reason behind this definition is the advancement of today’s computer technologies, which have started a new era in the industry.</p><p>The founder of World Economic Forum, Klaus Schwab [<xref ref-type="bibr" rid="scirp.78450-ref1">1</xref>] stated that having a globally shared view about how technology is changing our lives is necessary, as those changes are so profound they show great promise, but they may also bring great peril. Brettel et al. [<xref ref-type="bibr" rid="scirp.78450-ref2">2</xref>] pointed out that the concept of Industry 4.0 explains changes in the industrial world, however the term is being used in different contexts and does not have a clear definition. Current use of the term is insignificant and meaningless in some respects, as there is insufficient information about the concept [<xref ref-type="bibr" rid="scirp.78450-ref3">3</xref>] . Moreover, the over-ambitious marketing of this concept made it even more difficult to understand [<xref ref-type="bibr" rid="scirp.78450-ref4">4</xref>] . Sources referring to Industry 4.0 are repeating the same things in different ways. However, growing use of this terminology can be counted as evidence of industrial development’s transition to a new phase [<xref ref-type="bibr" rid="scirp.78450-ref5">5</xref>] .</p><p>With the Industry 4.0, the industry has entered a new turn in the wake of the emergence of the concept of big data. In today’s competitive business environment, companies face the challenges of making rapid decisions about big data for improved productivity. However, many manufacturing systems are not ready to manage big data due to the lack of intelligent analytical tools [<xref ref-type="bibr" rid="scirp.78450-ref6">6</xref>] . In the recent years, there has been increased interest in the potential of big data &amp; analytics concepts to improve organizational performance and these concepts have started to become very popular in the literature of both management science and information science [<xref ref-type="bibr" rid="scirp.78450-ref7">7</xref>] .</p><p>In this study, social media analysis was conducted to compare the two different fields in IT sector about their perspective on Industry 4.0. For this purpose, Twitter was chosen as a social media platform as it contains vast amounts of unstructured data. Firstly, existing literature related to Industry 4.0 such as business intelligence &amp; analytics, decision making, social media and text mining are discussed. Following data collection process, dataset structure and Twitter analysis are explained in method section and finally results of the analysis are shown.</p></sec><sec id="s2"><title>2. Literature Review</title><p>“Industry 4.0 includes a wide range of concepts, including different perspectives, industries, technologies and areas.” [<xref ref-type="bibr" rid="scirp.78450-ref8">8</xref>] The idea behind Industry 4.0 comes from the first three industrial revolutions, which were mechanization, electricity and computer and automation [<xref ref-type="bibr" rid="scirp.78450-ref9">9</xref>] . Future-oriented technologies in the areas of internet technologies and “smart” objects (machines and products) are causing a new fundamental paradigm shift in industrial production [<xref ref-type="bibr" rid="scirp.78450-ref10">10</xref>] . Because of this paradigm shift, some challenges about data management and decision-making have arisen [<xref ref-type="bibr" rid="scirp.78450-ref11">11</xref>] [<xref ref-type="bibr" rid="scirp.78450-ref12">12</xref>] . Industry 4.0 is a “response” to those increasing challenges of computerized decision-making and big data [<xref ref-type="bibr" rid="scirp.78450-ref13">13</xref>] .</p><p>Industry 4.0 is associated with many concepts such as Embedded Systems, Internet of Things and Cyber-Physical Systems [<xref ref-type="bibr" rid="scirp.78450-ref5">5</xref>] [<xref ref-type="bibr" rid="scirp.78450-ref13">13</xref>] . Many companies, organizations, and universities work on different aspects of Industry 4.0 although there are four requirements as pre-conditions for industrial acceptance, which are; investment protection, stability, data privacy and cybersecurity [<xref ref-type="bibr" rid="scirp.78450-ref4">4</xref>] . For Germany, the aim of the Industry 4.0 project is to prepare for the future of manufacturing of the German industry [<xref ref-type="bibr" rid="scirp.78450-ref14">14</xref>] . In the future vision of production, efficient manufacturing systems are crucial since these systems define scenarios in which products control their own production processes [<xref ref-type="bibr" rid="scirp.78450-ref10">10</xref>] .</p><p>Cyber-Physical Systems have become quite popular in the literature recently, especially in the fields of computer science and manufacturing. Cyber-Physical Systems include intelligent machines, storage systems and production facilities capable of sending and receiving information autonomously, units that can act and control each other independently [<xref ref-type="bibr" rid="scirp.78450-ref15">15</xref>] . Cyber-Physical Systems make huge amounts of raw data important for manufacturing and provide opportunities for real-time management of processes [<xref ref-type="bibr" rid="scirp.78450-ref16">16</xref>] .</p><p>Bauer et al. [<xref ref-type="bibr" rid="scirp.78450-ref17">17</xref>] concluded that mobile devices and social media are part of Industry 4.0 since the manufacturing environment is leading to real-time transparency, which will make production control, and management processes more flexible. This “digital transformation” can be challenging for the companies however, many companies are already started their journey to transformation since they provide interactive websites, improved customer service and so on [<xref ref-type="bibr" rid="scirp.78450-ref18">18</xref>] . Westerman and McAfee [<xref ref-type="bibr" rid="scirp.78450-ref19">19</xref>] found out that large businesses use embedded systems, mobile analytics and social media to change customer engagement, internal operations and even their business models. “Twitter acquired the social data aggregator Gnip as part of Twitter’s strategy to create a new service that integrates social and mobile data with analytics to provide real-time business intelligence.” [<xref ref-type="bibr" rid="scirp.78450-ref20">20</xref>]</p><p>The business intelligence begins with the extraction of data, depositing in warehouses; then the decision-maker uses decision-support systems to extract data from the data warehouse, and decision maker makes an action plan based on this information [<xref ref-type="bibr" rid="scirp.78450-ref21">21</xref>] . In fact, the aim of business intelligence is making operational data valuable by analysis and to provide the necessary data to decision makers [<xref ref-type="bibr" rid="scirp.78450-ref22">22</xref>] . McAfee and Brynjolfsson [<xref ref-type="bibr" rid="scirp.78450-ref23">23</xref>] found that not every company is data-driven in decision-making, but companies that defined themselves as data-driven in the analyses provided better results in financial and operational issues and on average 5% more productive than other companies. According to Bi et al. [<xref ref-type="bibr" rid="scirp.78450-ref24">24</xref>] from the data management perspective, the Management Information Systems for the next generation manufacturing enterprises are facing two situations: 1) increased costs due to the complexity of the system and the need for rapid decision-making; 2) waste of time and resources for communications when the data are shared with other units [<xref ref-type="bibr" rid="scirp.78450-ref20">20</xref>] . In addition to this, machine learning algorithms can be used to find out the causes of statistics, trends, and links that the business analytics reveals and through these algorithms patterns can be uncovered [<xref ref-type="bibr" rid="scirp.78450-ref7">7</xref>] . Advanced analytics and artificial intelligence give companies new abilities to draw insights from huge amounts of data [<xref ref-type="bibr" rid="scirp.78450-ref25">25</xref>] . A research conducted by Accenture [<xref ref-type="bibr" rid="scirp.78450-ref26">26</xref>] found out that artificial intelligence has an impact on administration, decision-making and innovation as 86% of managers say that they need help from intelligent systems when monitoring and reporting.</p><p>Business analytics is a layer of services for direct decision-making and is an extension of the “information systems” which is a fundamental interdisciplinary research area [<xref ref-type="bibr" rid="scirp.78450-ref27">27</xref>] . Business intelligence allows managers to make sensible decisions about the management of the company. Decisions made with business intelligence create processes that are more efficient; thus, they create a competitive advantage [<xref ref-type="bibr" rid="scirp.78450-ref28">28</xref>] . In the recent past, manufacturing companies have been late for adopting advanced data warehousing and business intelligence solutions; but they have attempted to use business intelligence in order to reduce cycle time and waste in manufacturing [<xref ref-type="bibr" rid="scirp.78450-ref29">29</xref>] . Business intelligence and business analytics serve the same purpose but their definitions are different. Business intelligence focuses on reporting while business analytics is statistical and future-oriented. These concepts are elements of a larger concept named “big data” [<xref ref-type="bibr" rid="scirp.78450-ref30">30</xref>] . The emerge of social networks such as Twitter and Facebook, plus the developments in mobile connectivity such as smart phones and tablet devices have resulted an explosion in data which now requires business analytics to take full advantage of it [<xref ref-type="bibr" rid="scirp.78450-ref18">18</xref>] . There are various data formats in social media platforms such as texts, videos, images so on. For this reason, mining data from social media has become extremely important.</p><p>Twitter is a social media platform and a microblog founded in 2006 [<xref ref-type="bibr" rid="scirp.78450-ref31">31</xref>] . In Twitter, information spreads in the form of Retweets [<xref ref-type="bibr" rid="scirp.78450-ref32">32</xref>] . Information shared in short texts in microblogs and this makes microblogs important for text mining [<xref ref-type="bibr" rid="scirp.78450-ref33">33</xref>] . Additionally, microblogs are valuable source of people’s opinions since many people use those platforms [<xref ref-type="bibr" rid="scirp.78450-ref34">34</xref>] . On Twitter, users connect through #hashtags on specific topic(s).</p></sec><sec id="s3"><title>3. Data Collection and Data Pre-Processing</title><p>Five companies operating in the field of IT research &amp; consulting and five companies in ERP were selected. Selected IT research companies are Gartner, IBM, Forrester, Thomson Reuters and Nielsen Media. Selected ERP companies are SAP, ORACLE, Microsoft, Infor and Epicor. Separate data sets for both fields were created and tweets from the official twitter accounts of companies were collected.</p><sec id="s3_1"><title>3.1. Twitter Accounts</title><p>The official Twitter accounts of the companies that make up the datasets are given in <xref ref-type="table" rid="table1">Table 1</xref>.</p></sec><sec id="s3_2"><title>3.2. Data Collection</title><p>The Twitter API service [<xref ref-type="bibr" rid="scirp.78450-ref35">35</xref>] was used to create the datasets. As shown in <xref ref-type="table" rid="table1">Table 1</xref>, a total number of 10 twitter accounts were used. Tweets were obtained separately from each account and depending of the field of companies tweets were collected in two datasets independent from each other. In dataset, each row contains 16 properties, which are text, favorited, favorite Count, replyToSN, created, truncated, re-plyToSID, id, replyToUID, status Source, screen Name, retweet Count, is Retweet, re-tweeted, longitude, and latitude. An example is shown in <xref ref-type="fig" rid="fig1">Figure 1</xref>.</p><p><xref ref-type="table" rid="table2">Table 2</xref> shows the number of tweets in each dataset and the date range that</p><table-wrap id="table1" ><label><xref ref-type="table" rid="table1">Table 1</xref></label><caption><title> Twitter accounts</title></caption><table><tbody><thead><tr><th align="center" valign="middle"  colspan="3"  >Account Details</th></tr></thead><tr><td align="center" valign="middle" >Field</td><td align="center" valign="middle" >Company Name</td><td align="center" valign="middle" >Twitter Account</td></tr><tr><td align="center" valign="middle"  rowspan="5"  >Research &amp; Consulting</td><td align="center" valign="middle" >Gartner</td><td align="center" valign="middle" >@Gartner_inc</td></tr><tr><td align="center" valign="middle" >IBM</td><td align="center" valign="middle" >@IBM</td></tr><tr><td align="center" valign="middle" >Forrester</td><td align="center" valign="middle" >@forrester</td></tr><tr><td align="center" valign="middle" >Thomson Reuters</td><td align="center" valign="middle" >@thomsonreuters</td></tr><tr><td align="center" valign="middle" >Nielsen Media</td><td align="center" valign="middle" >@Nielsen</td></tr><tr><td align="center" valign="middle"  rowspan="5"  >Enterprise Resource Planning (ERP)</td><td align="center" valign="middle" >SAP</td><td align="center" valign="middle" >@SAP</td></tr><tr><td align="center" valign="middle" >ORACLE</td><td align="center" valign="middle" >@Oracle</td></tr><tr><td align="center" valign="middle" >Microsoft</td><td align="center" valign="middle" >@msftdynamics365</td></tr><tr><td align="center" valign="middle" >Infor</td><td align="center" valign="middle" >@Infor</td></tr><tr><td align="center" valign="middle" >Epicor</td><td align="center" valign="middle" >@Epicor</td></tr></tbody></table></table-wrap><table-wrap id="table2" ><label><xref ref-type="table" rid="table2">Table 2</xref></label><caption><title> Details of datasets</title></caption><table><tbody><thead><tr><th align="center" valign="middle" >Field</th><th align="center" valign="middle" >Account</th><th align="center" valign="middle" >Date Interval of Created Tweets</th><th align="center" valign="middle" >Count of Tweets</th></tr></thead><tr><td align="center" valign="middle"  rowspan="5"  >Research &amp; Consulting</td><td align="center" valign="middle" >@Gartner_inc</td><td align="center" valign="middle" >20.05.2017-26.01.2017</td><td align="center" valign="middle" >396</td></tr><tr><td align="center" valign="middle" >@IBM</td><td align="center" valign="middle" >19.05.2017-06.04.2017</td><td align="center" valign="middle" >75</td></tr><tr><td align="center" valign="middle" >@forrester</td><td align="center" valign="middle" >19.05.2017-26.09.2016</td><td align="center" valign="middle" >547</td></tr><tr><td align="center" valign="middle" >@thomsonreuters</td><td align="center" valign="middle" >19.05.2017-20.04.2017</td><td align="center" valign="middle" >104</td></tr><tr><td align="center" valign="middle" >@Nielsen</td><td align="center" valign="middle" >19.05.2017-24.09.2016</td><td align="center" valign="middle" >495</td></tr><tr><td align="center" valign="middle"  rowspan="5"  >Enterprise Resource Planning (ERP)</td><td align="center" valign="middle" >@SAP</td><td align="center" valign="middle" >10.03.2016-20.05.2017</td><td align="center" valign="middle" >1666</td></tr><tr><td align="center" valign="middle" >@Oracle</td><td align="center" valign="middle" >19.05.2017-01.05.2017</td><td align="center" valign="middle" >74</td></tr><tr><td align="center" valign="middle" >@msftdynamics365</td><td align="center" valign="middle" >19.05.2017-04.11.2016</td><td align="center" valign="middle" >236</td></tr><tr><td align="center" valign="middle" >@Infor</td><td align="center" valign="middle" >19.05.2017-24.12.2016</td><td align="center" valign="middle" >181</td></tr><tr><td align="center" valign="middle" >@Epicor</td><td align="center" valign="middle" >19.05.2017-15.05.2016</td><td align="center" valign="middle" >216</td></tr></tbody></table></table-wrap><fig id="fig1"  position="float"><label><xref ref-type="fig" rid="fig1">Figure 1</xref></label><caption><title> Example dataset for ERP companies</title></caption><graphic mimetype="image"   position="float"  xlink:type="simple"  xlink:href="http://html.scirp.org/file/1-2680160x2.png"/></fig><p>tweets were posted. The creation date of each timeline for all accounts are different which is why the user Timeline function in twitter R package gives different date interval of created tweets for each timeline. Twitter allows obtaining a maximum number of 3200 tweets for each twitter account, which causes a limitation in this study. Furthermore, the Twitter API service does not allow obtaining tweets on a specific date range [<xref ref-type="bibr" rid="scirp.78450-ref36">36</xref>] . For this reason, the date range and number of tweets in datasets are different from each other.</p></sec><sec id="s3_3"><title>3.3. Data Preparation</title><p>The punctuation marks, numbers, links, blanks, pauses and irrelevant words were cleared from the tweets before they were analyzed in the dataset, as those would affect the results of this study.</p><p>R packages such as httr, devtools, twitteR, base64enc, xlsx, tm, sentiment 140, sentiment, topic models and ggplot2 were used in the analysis [<xref ref-type="bibr" rid="scirp.78450-ref37">37</xref>] - [<xref ref-type="bibr" rid="scirp.78450-ref46">46</xref>] .</p></sec></sec><sec id="s4"><title>4. Method</title><p>In this study, text-mining analysis is performed by using R programming language [<xref ref-type="bibr" rid="scirp.78450-ref47">47</xref>] . R Studio software is used for all analysis [<xref ref-type="bibr" rid="scirp.78450-ref48">48</xref>] . Tweets were obtained from the official Twitter accounts of the specified companies and they were clustered in separate dataset according to business fields of the companies. As stated in the data preparation step, various clearing procedures have been applied to tweets to ensure that all results are reliable. After this phase, word frequencies were obtained and depending on the field of the selected companies, frequently used words were found to create a list of top frequent words for each field. Besides, the words related to (associations) Industry 4.0 were examined.</p><p>The words presented in <xref ref-type="table" rid="table3">Table 3</xref> were searched in the clustered tweets, which are clustered according to the business fields. Then, the tweets which are related with the words presented in <xref ref-type="table" rid="table3">Table 3</xref> were transferred to two separate datasets for each field.</p><p>“In machine learning and natural language processing topic models are generative models which provide a probabilistic framework for the term frequency occurrences in documents in a given corpus.” [<xref ref-type="bibr" rid="scirp.78450-ref45">45</xref>] From this point of view, topic modelling was performed on the transferred tweets. Furthermore, Dickinson and Hu [<xref ref-type="bibr" rid="scirp.78450-ref49">49</xref>] stated that sentiment analysis focuses on opinions of speakers on a particular topic. Therefore, sentiment analysis was performed on the transferred tweets to reveal the polarity of the tweets related to Industry 4.0.</p></sec><sec id="s5"><title>5. Findings</title><sec id="s5_1"><title>5.1. Top Frequent Words</title><p>The word frequencies in the tweets of both fields that contain words related to Industry 4.0, which is given in <xref ref-type="table" rid="table3">Table 3</xref>, are identified and the five most frequently used words are presented in <xref ref-type="table" rid="table4">Table 4</xref>.</p></sec><sec id="s5_2"><title>5.2. Topic Modelling</title><p>The topic modelling was performed with tweets that contain words related to</p><table-wrap id="table3" ><label><xref ref-type="table" rid="table3">Table 3</xref></label><caption><title> List of words related with Industry 4.0</title></caption><table><tbody><thead><tr><th align="center" valign="middle" >Words</th></tr></thead><tr><td align="center" valign="middle" >Industry 40, industry 40, Industry 4.0, Industry 4.0, big data, bigdata, machine learning, machinelearning</td></tr></tbody></table></table-wrap><p>Industry 4.0 in each field. The topic models for each field are presented in <xref ref-type="fig" rid="fig2">Figure 2</xref> and <xref ref-type="fig" rid="fig3">Figure 3</xref>.</p></sec><sec id="s5_3"><title>5.3. Sentiment Analysis</title><p>The tweets for each field are classified as positive, negative and neutral and the results of the sentiment analysis are presented in <xref ref-type="table" rid="table5">Table 5</xref>.</p><p>As shown in <xref ref-type="table" rid="table5">Table 5</xref>, ERP companies shared more neutral tweets than research and consulting companies. The counts of negative tweets for both field are equal.</p></sec></sec><sec id="s6"><title>6. Discussion and Conclusions</title><p>The obtained results show that ERP companies used the words “machine”, “learning”, “data”, “big” and “learn” while tweeting about Industry 4.0. In addition to that, the words “news”, “data”, “big”, “real” and “separate” came to forefront in the tweets that research &amp; consulting companies tweeted about Industry 4.0. These results show that the both fields are aware of the “big data” concept, which was discussed in the literature review of this study.</p><p>According to the results of the sentiment analysis, companies often share tweets about Industry 4.0 with neutral polarity. This shows that shared tweets have no positive or negative effect on the users.</p><p>This study is limited to total 10 companies selected from the IT sector in the fields of research &amp; consulting and ERP. Furthermore, only Twitter is used as a social platform and limited data could be obtained. Future studies can be done</p><table-wrap id="table4" ><label><xref ref-type="table" rid="table4">Table 4</xref></label><caption><title> Top 5 frequent words</title></caption><table><tbody><thead><tr><th align="center" valign="middle" >Field</th><th align="center" valign="middle" >Term</th><th align="center" valign="middle" >Frequency</th></tr></thead><tr><td align="center" valign="middle"  rowspan="5"  >Research &amp; Consulting</td><td align="center" valign="middle" >news</td><td align="center" valign="middle" >5</td></tr><tr><td align="center" valign="middle" >data</td><td align="center" valign="middle" >4</td></tr><tr><td align="center" valign="middle" >big</td><td align="center" valign="middle" >3</td></tr><tr><td align="center" valign="middle" >real</td><td align="center" valign="middle" >3</td></tr><tr><td align="center" valign="middle" >separate</td><td align="center" valign="middle" >3</td></tr><tr><td align="center" valign="middle"  rowspan="5"  >Enterprise Resource Planning (ERP)</td><td align="center" valign="middle" >machine</td><td align="center" valign="middle" >22</td></tr><tr><td align="center" valign="middle" >learning</td><td align="center" valign="middle" >20</td></tr><tr><td align="center" valign="middle" >data</td><td align="center" valign="middle" >15</td></tr><tr><td align="center" valign="middle" >big</td><td align="center" valign="middle" >12</td></tr><tr><td align="center" valign="middle" >learn</td><td align="center" valign="middle" >9</td></tr></tbody></table></table-wrap><table-wrap id="table5" ><label><xref ref-type="table" rid="table5">Table 5</xref></label><caption><title> Results of sentiment analysis</title></caption><table><tbody><thead><tr><th align="center" valign="middle"  rowspan="2"  >Field</th><th align="center" valign="middle"  colspan="3"  >Polarity</th></tr></thead><tr><td align="center" valign="middle" >Positive</td><td align="center" valign="middle" >Negative</td><td align="center" valign="middle" >Neutral</td></tr><tr><td align="center" valign="middle" >Research &amp; Consulting</td><td align="center" valign="middle" >-</td><td align="center" valign="middle" >1</td><td align="center" valign="middle" >10</td></tr><tr><td align="center" valign="middle" >ERP</td><td align="center" valign="middle" >1</td><td align="center" valign="middle" >1</td><td align="center" valign="middle" >44</td></tr></tbody></table></table-wrap><fig id="fig2"  position="float"><label><xref ref-type="fig" rid="fig2">Figure 2</xref></label><caption><title> Topic model for research &amp; consulting companies</title></caption><graphic mimetype="image"   position="float"  xlink:type="simple"  xlink:href="http://html.scirp.org/file/1-2680160x3.png"/></fig><fig id="fig3"  position="float"><label><xref ref-type="fig" rid="fig3">Figure 3</xref></label><caption><title> Topic model for ERP companies</title></caption><graphic mimetype="image"   position="float"  xlink:type="simple"  xlink:href="http://html.scirp.org/file/1-2680160x4.png"/></fig><p>on different social platforms, on different number of companies about Industry 4.0.</p></sec><sec id="s7"><title>Cite this paper</title><p>Yilmaz, İ.G., Ayg&#252;n, D. and Tanrikulu, Z. 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