Application of Language Model Theory in Topic Tracking
Yong Chen · Radio Engineering of China · 2008
Language model technology,as a new modeling technology in information retrieval field,has gradually become one of the essential technologies in current linguistic information processing.In the paper,this technology is used in topic tracking research.First,we introduce basics of language model theory,then,we describe how to apply language model theory to topic tracking.Finally,we set up two tracking systems,one based on language model theory and the other based on traditional VSM,to make performance comparison.Experimental results show that the proposed approach can achieve better performance than VSM based approach.