Technical Advances and Performance Evaluation of Full Text Information Retrieval
文本信息检索技术进展和性能评价框架

Efforts of TREC on the performance evaluation for IRS and its roles in promoting the development of new information retrieval technology are described, with a summary of facets and new features to show a variety of new types of IRSs. Graphs are cited to compare performance evaluation criterions for a number of commercially available full text IRSs. A framework of performance evaluation is suggested for Chinese full text information retrieval systems based on selected criterions peculiar to Chinese information processing environment.