This article elaborates on the functions of Duxiu academic search from the perspectives of the comprehensive guarantee and in-depth search of Chinese database resources,the digital resource of integration of Chinese papers and various document types,and comprehensive guarantee and resources integration of full-text delivery technology.

The developing trend of semantic net in network retrieval;

This paper introduces some methods for the collection, description, abstract and titles of the newspapers before the establishment of the People s Republic of China by using the newspapers and network retrieval tools.

The network information resource retrieval and the use have already become the main way that people obtain the information,but want to obtain the information needed quickly and accurately,have to grasp the certain network retrieval technology and the retrieval strategy.