Problems and solutions of web search engines

In order to study the retrieval precision of network information and solve the problems existed in search engines this paper analyzes problems and precision in the information retrieval according to experimental data such as image retrieval with different retrieval keywords, and puts forward a new construction of search engine with intelligentization. It comes to a conclusion that many methods can be used to improve the network retrieval precision effectually. And users need to meet with correct solution to keywords, construction and improvement of knowledge library, reasonable definition of features vectors, information matching and filtering, and increasing the intelligentization for spider, indexer and searcher.