A New Event Detection Model Based on Term Reweighting
基于词元再评估的新事件检测模型

New event detection(NED)is aimed at detecting from one or multiple streams of news stories the one being reported on a new event(i.e.not reported previously).Preliminary experiments show that terms of different types(e.g.Noun and Verb)have different effects for different classes of stories in determining whether or not two stories are on the same topic.Unfortunately,conventional approaches usually ignore the fact.This paper proposes a NED model utilizing two approaches to addressing the problem based on ter...