Design And Realization Of Subject-Oriented Search Engine

In the rapid development of social information, the network ,regarded as the most important information release and interactive platform in modern society, bring an unprecedented information resources for the people.At the same time, it also brings greater challenges. Facing such abundant network resources, how to quickly locate the needed information makes search engine come into being.Along with the science and technology plays a more and more important dominated role in the economic development,the specialization of industrial structure becomes much datailer.Providing professional information for the users becomes much more important,but general search engine (GSE) cannot meet the demand. In the background, Subject-oriented Search Engine ,which is to the particular subjects,has been paid more and more attention to the people .This is a important direction in the development of search engines.The paper expounds the basic principle of search engine and its classification,and detailly analyses the general search engines' structure and realization principle.Carry on the improvement to GSE,and put forward a plan of Subject-oriented Search Engine.After the whole design and analysis of the system, it does thorough analyse to the subject description,search strategies ,test methods of subject correlation and page parser techniques of subject crawler. On this basis, it can grab and judge the subject pages, and then realizes the true Subject-oriented Search Engine. Finally, adding indexing and user retrieval function integrates into the complete subject-oriented search engine.