关键词: 内容主题识别, 事件主题分析, 主题检测和追踪, 领域知识, 连接分析

Abstract: An event topic similarity computation technique for the fifth TDT technique-linking detection was put forward. Domain knowledge base is used to upgrade topic similarity computation technique from lexical analysis to domain knowledge analysis. The linking detection technique is used to decide whether two documents (or stories) are on the same event topic. There are two steps in the analysis procedure which includes using FIFA modal to identification content topic, and using LDM modal to compute event topic similarity. Experiment results show that precision and recall percents of the model are 64% and 69%.