Search Engine provides a convenient way for searching information resource in the network which owns magnanimous information. But as network information resource is growing within “explosion mode”, people get useful information more and more difficultly; then people begin to give more attention to how to extract latent and valuable information quickly and efficiently from the magnanimous information, so as to use it efficiently to make effects in the management and decision. To resolve this problem, we need a search engine system which faces to the special area, needs low hardware configuration, can analyze the depth of the data and is updated timely. In recent years, the research and application of the search technology which faces to the special area has become a hot research direction. We call a search engine which faces to the special area, people and command just vertical search engine.
This article will give the introduction of the vertical search engine, then make a analysis of the Lucene’s index and retrieva l technology by an open packet, and compare the Lucene and the relational database. We will clarify its application through the mobile-phone vertical search engine based on JAVA which is based on Lucene’s retrieva l architect, use Spring frame, contains web crawler technology like Heritrix and Ajax etc.
Keywords: Lucene;Vertical Search Engine;Web Crawler;
Chinese Word Segmentation;Retrieva l