Building Chinese Event Type Paradigm Based on Trigger Clustering
Xiao Ding, Bing Qin, Ting Liu · International Joint Conference on Natural Language Processing · 2013
.cn Abstract Traditional Event Extraction mainly focuses on event type identification and event partici- pants extraction based on pre-specified event type annotations. However, different domains have different event type paradigms. When transferring to a new domain, we have to build a new event type paradigm. It is a costly task to discover and annotate event types manually. To address this problem, this paper proposes a novel approach of building an event type para- digm by clustering event triggers. Based on the trigger clusters, the event type paradigm can be built automatically. Experimental re- sults on three different corpora - ACE (small, homogeneous, open corpus), Financial News and Musical News (large scale, specific do- main, web corpus) indicate that our method can effectively build an event type paradigm and can be easily adapted to new domains.