Naslov
Event-Centered Information Retrieval Using Kernels on Event Graphs

Autori
Glavaš, Goran ; Šnajder, Jan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the Workshop on Graph-based Methods for Natural Language Processing (TextGraphs-8) in conjunction with Conference on Empirical Methods in Natural Language Processing (EMNLP'13) / - Seattle (WA), 2013, 1-5

Skup
TextGraphs-8 at Empirical Methods in Natural Language Processing (EMNLP'13)

Mjesto i datum
Seattle (WA), Sjedinjene Američke Države, 18.10.2013. - 21.10.2013

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Information retrieval; Event extraction; Graph kernels

Sažetak
Traditional information retrieval models assume keyword-based queries and use unstructured document representations. There is an abundance of event-centered texts (e.g., breaking news) and event-oriented information needs that often involve structure that cannot be expressed using keywords. We present a novel retrieval model that uses a structured event-based representation. We structure queries and documents as graphs of event mentions and employ graph kernels to measure the query-document similarity. Experimental results on two event-oriented test collections show significant improvements over state-ofthe-art keyword-based models.

Izvorni jezik
Engleski

Znanstvena područja
Računarstvo

POVEZANOST RADA