The article introduction search the origins of engine and development, and constitute of engine with classification.Pass the introduction to the principle and classification which search engine, thorough analysis various the principle which search engine, characteristics and its merit and shortcoming.Currently a lot ofly search all of engines is to put toger keyword index and the topic catalogue index knot, with full exertive both of advantage.And along with technique of progress, engine also at quick development, it from comprehensive aptitude profession turn a direction development, from one aptitude diversification direction development, from regard English as principle to many the language turn a direction development and also need to draw lessons from other dissimilarity of classification the mod promote it perfect development.Article also in the meantime Jian3 Shu4 search engine of development and development mode, and pass rightness currently variety search an engine adoption of search a way to carry on analysis to categorize;Again to the foundation which search engine present condition summary up, search engine to the future of development the trend carry on outlook....
