Research of Technologies on Topic Detection and Tracking
Xiaoyan Zhang · Jisuanji kexue yu tansuo · 2009
Topic detection and tracking(TDT)is the research that addresses event-based organization of broadcast news.It has always been an issue in the field of natural language processing from the beginning.Remarkable successes have been made with classical models and methods which are borrowed from other related researches,especially information retrieval.TDT and its primary tasks,evaluation methods and development history are first introduced.Then,an integrated research framework is provided for TDT.The key technologies of the framework are analyzed.Finally,the key problems and the difficulties in TDT are proposed and the future work is looked forward.