Keyword extraction

<h2 id="keyword-assignment-vs-extraction">Keyword assignment vs. extraction</h2>
<p>Keyword assignment methods can be roughly divided into:
</p>
<ul><li>keyword assignment (keywords are chosen from controlled vocabulary or taxonomy) and</li>
<li>keyword extraction (keywords are chosen from words that are explicitly mentioned in original text).</li></ul>
<p>Methods for automatic keyword extraction can be supervised, semi-supervised, or unsupervised.<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> Unsupervised methods can be further divided into simple statistics, linguistics or graph-based, or <a href="/facts/Ensemble_learning/GvFsd3Qc">ensemble methods</a> that combine some or most of these methods. <a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a>
</p>

<h2 id="further-reading">Further reading</h2>

<ul><li>Nazanin Firoozeh; Adeline Nazarenko; Fabrice Alizon; Béatrice Daille (11 November 2019). "Keyword extraction: Issues and methods". <i><a href="/facts/Natural_Language_Processing_(journal)/9BVh15V8">Natural Language Processing</a></i>. 26 (3): 259–291. <a href="/facts/Doi_(identifier)/muM9Etpq">doi</a>:<a href="https://doi.org/10.1017%2FS1351324919000457">10.1017/S1351324919000457</a>. <a href="/facts/ISSN_(identifier)/DPAflDvU">ISSN</a> <a href="https://search.worldcat.org/issn/1351-3249">1351-3249</a>. <a href="/facts/WDQ_(identifier)/5Myy74K5">Wikidata</a> Q109971296.</li></ul>

<h2 id="references">References</h2>

<ol>
<li id="fn:1"><p>Beliga, Slobodan; Ana, Meštrović; Martinčić-Ipšić, Sanda. (2015). "An Overview of Graph-Based Keyword Extraction Methods and Approaches". Journal of Information and Organizational Sciences. 39 (1): 1–20. <a href="http://hrcak.srce.hr/file/207669" target="_blank">http://hrcak.srce.hr/file/207669</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li>
<li id="fn:2"><p>Rada Mihalcea; Paul Tarau (July 2004). TextRank: Bringing Order into Texts (PDF). Proceedings of the Conference on Empirical Methods in Natural Language Processing (EMNLP 2004). Barcelona, Spain. <a href="http://web.eecs.umich.edu/~mihalcea/papers/mihalcea.emnlp04.pdf" target="_blank">http://web.eecs.umich.edu/~mihalcea/papers/mihalcea.emnlp04.pdf</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li>
<li id="fn:3"><p>Beliga, Slobodan; Meštrović, Ana; Martinčić- Ipšić, Sanda. (2014). Toward Selectivity-Based Keyword Extraction for Croatian News (PDF). Surfacing the Deep and the Social Web (SDSW 2014). Vol. 1310. Italy: CEUR Proc. pp. 1–14. <a href="http://ceur-ws.org/Vol-1310/paper1.pdf" target="_blank">http://ceur-ws.org/Vol-1310/paper1.pdf</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li>
<li id="fn:4"><p>Alrehamy, H.; Walker, C. (2017). SemCluster: Unsupervised Automatic Keyphrase Extraction Using Affinity Propagation. 17th UK Workshop on Computational Intelligence. <a href="https://www.researchgate.net/publication/318436236" target="_blank">https://www.researchgate.net/publication/318436236</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li>
<li id="fn:5"><p>Tayfun Pay; Stephen Lucci (2017). Automatic Keyword Extraction: An Ensemble Method. 2017 IEEE International Conference on Big Data (Big Data). doi:10.1109/BigData.2017.8258552. <a href="/wiki/Doi_(identifier)" target="_blank">/wiki/Doi_(identifier)</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li>
</ol>

Keyword extraction open-in-new

Keyword extraction