User model for retrieval based on mutual information and Bayesian network
Zhurong Zhou · Jisuanji gongcheng yu sheji · 2008
Personal information service is becoming more and more important in information retrieval system.A user model based on Bayesian network and mutual information is built,which could both express terms' semantic relations and statistic distributes.Framed on the structure of Bayesian network,the model contained the information of terms' probability,mutual information and time mechanism.The model is proved to improve the ratio of correctness and completeness in information retrieval.