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Pregled bibliografske jedinice broj: 728626

Zbornik radova

Autori: Beliga, Slobodan; Martinčić-Ipšić, Sanda
Naslov: Node Selectivity as a Measure for Graph-Based Keyword Extraction in Croatian News
Izvornik: 6th International Conference on Information Technologies and Information Society (ITIS2014) / Boshkoska, Biljana Mileva ; Levnajić, Zoran (ur.). - Šmarješke toplice, Slovenija :
Skup: 6th International Conference on Information Technologies and Information Society (ITIS2014)
Mjesto i datum: Šmarješke toplice, Slovenija, 5-7.11.2014
Ključne riječi: keyword extraction; keyword candidate; keyword ranking; keyword expansion; node selectivity; Croatian news; complex network
Sažetak:
In this paper, we introduce selectivity-based keyword extraction as a new unsupervised method for graph-based keyword extraction. Node selectivity measure is defined as the average weight distribution on the links of a single node and used in procedure of keyword candidate extraction. In particular, we propose extracting three word long keyword sequence and proving that the obtained results compare favourably with previously published results. Experiments were conducted on Croatian news articles dataset with keywords annotated by human experts. The selectivity-based keyword extraction method achieved the average F2 score of 25.32% on isolated documents and F2 score of 42.07% on a document collection. Proposed method is derived solely from statistical and structural information, which are reflected in the topological properties of text network. Furthermore, comparative results indicate that our simple graph-based method provides results that are comparable with more complex supervised and unsupervised methods, as well as with human annotators.
Vrsta sudjelovanja: Predavanje
Vrsta prezentacije u zborniku: Nije objavljen
Vrsta recenzije: Međunarodna recenzija
Projekt / tema: Uniri-LangNet
Izvorni jezik: ENG
Kategorija: Znanstveni
Znanstvena područja:
Računarstvo,Informacijske i komunikacijske znanosti
Upisao u CROSBI: Sanda Martinčić - Ipšić (smarti@inf.uniri.hr), 10. Stu. 2014. u 12:23 sati



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