Design And Implement Of Chemical Searcher Engine

At present, synthetic search engines, such as Google, has been very successful. But when domain experts search professional information with synthetic search engines, they can't find information they need always. Consequently, it is very necessary that develop professional search engines to meet domain experts.This paper researches and implements a Chemical Search Engine. In order to implement the search engine, this paper introduces the architecture of synthetic search engines that includes Spider, Indexer and Searcher as well as File Processor. The File Processor module is used to transform the web pages to text files. This search engine is developed based on an open source index engine called Apache Lucene. During the course of design and development, a lot of source is reused according to the standard of software engineering. Based on Lucene, some modification is made and a lot of new source code is developed. In this paper, design and implementation of file processor, searcher and common modules is discussed. The integration of the search engine system is discussed too. The program logic of file processor and the algorithm of summary generatorand render are emphasized. Finally, this paper introduces how the file processor and searcher are deployed and run, and describes the outcome of file processor and searcher.This search engine system has passed the unit test and integrated test and may run stably. Presently, this system will be published, which will give much help to chemical experts.