The Desgin and Implementationof Ver tical Sear ch Engine Based on Nutch

Abstr act.For the convenience that users can query information of traditional Chinese medicine in the network of Marine information, the vertical search engine system based on Nutch is designed. Joined Chinese word segmentation to analyze the web page, added a PageRank algorithm to judge the authority value of the links, achieved a topic relevance algorithm based on VSM to filter the web pages. The results show that the system is feasible.