Event-Centered Information Retrieval Using Kernels on Event Graphs

Goran Glavas, Jan Snajder
2013 Workshop on Graph-based Methods for Natural Language Processing  
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
more » ... larity. Experimental results on two event-oriented test collections show significant improvements over state-ofthe-art keyword-based models.
dblp:conf/textgraphs/GlavasS13 fatcat:4uvj52e4ujfvda2e27vmppk5mm