Research And Implementation Of Key Technology In Verticle Search Engine System

The thesis studied the key technologies to the realization of vertical search,research and analysis the two core modules, the theme spiders and indexing technology from details in-depth. In the design of spider, through theme relevance search strategy combined of content and link analysis, and improve theme-related degrees through content-based evaluation, improve the theme resources coverage though the evaluation of link structure, so as to improve performance of spider effectively; from structure of the index file itself, adopting a classification inverted table to index of the organizational structure, and improve the traditional implementation program of inverted indexing table,improved index created efficiency; Finally, combine indexing technology of open source project Nutch, design and implement of a digital information theme-based vertical search engine, through the relevant tests, verify the system can provide users with more complete and accurate the theme information inquiring services.