The Architecture And Realization Technology Of An Information Searching Engine In Special Field

With the rapid development of the Internet technology, information on the Internet is growing with the speed of geometric series, therefore, efficient retrieval of the information has become to a problem which is neccesary to be solved, the technique of search engine has gained more attention and is being developed rapidly. Currently, integrated search engine such as Google, Baidu has made great success, but, it is hard to find the specialized content which is needed by the experts. Therefore, it is necessary to develop the search engine in special field to meet the need of searching information which is in special field.A special field search engine which has general availability was researched and designed in this article. The only need is to revise the field vocabulary lexicon document if people want to change the application field. To realize the special field search engine system, the systematic frame of integrated search engine which was made of with spider, indexer and searcher was added, the Chinese participle and the information fliteration modules also be added. This search engine system based on the open-source program Nutch and Lucene. In the process of designing and developing, much Lucene and Nutch code were reused which strictly accorded to the software engineering request, changes and expansion base on the reuse. The scheme to integrate the system, design and realization of the modules were described. The arithmetic of Chinese participle module was primarily discussed. Finally the the experiment data was introduced, and the test result was showed.The main differences between this specific field search engine and the existing search engines are below: First is the special usage area, second is the area can be adapted by the user. It is believed that it will provide more convenience to the experts and scholars who have demand of specialized information search.