Research And Implementation Of Tree Based Search Engine

In the era of "Internet Plus" and "Plus Internet", the Internet not only benefits for us, but also promoted progress in science and technology. Research in plants is the cornerstone of the development of a green power, thus designing a search system about trees brings great convenience for searching and adding information.The paper is based on the background of information retrievaland his structure.First,the paper introduces informeation retrieval of features, structure, advantages and disadvantages,which it is based on that thr topic search engine is proposed.Second,it talk with relationship between crawler, topic relevance and topic relevance algorithm.Third,the common segmentation algorithm is illustrated and it will adopt the way of segmentation algorithm.At last, the paper mainly introduces the system structure of Lucene and the commonly used query model,especially describing index and query in detail.On the basis of these theories, this paper finally developed the system of tree based search engine,and the system was accomplished with the process of grabbing, preprocessing, segmentation and indexing.When the system is running, it can be correctly and successfully display the result after the query keywords that we submit can be searched.The final results show that this system advances a lot in the respect of accuracy than the well-known research engine and is of great benefit to us in trees research engine.