Optimizing Story Link Detection is not Equivalent to Optimizing New Event Detection

Link detection has been regarded as a core technology for the Topic Detection and Tracking tasks of new event detection. In this paper we formulate story link detection and new event detection as information retrieval task and hypothesize on the impact of precision and recall on both systems. Motivated by these arguments, we introduce a number of new performance enhancing techniques including part of speech tagging, new similarity measures and expanded stop lists. Experimental results validate our hypothesis.

• Type: Conference
• Year: 2003
• Where: ACL
• Authors: Ayman Farahat, Francine Chen, Thorsten Brants
• Keywords: ACL 2003, ACL 2007, Link Detection, Story Link Detection, Topic Detection