Chinese Lan Search Engine Design And Implementation

With the continuous development and the increasing popularity of the Internet,The amount of the information online is in the explosive growth,It's too difficult to find the informations you need in the enormous information online,so the emergence of the Search engine make people access to information more convenient.But the general search engines have limitations, nowadays the strong demand of people for information is specialization, Refinement, non-commercial,the strong demand makes the emergence of vertical search engines in Professional fields . On the other hand, the regions where the general search engines can not be covered ,such as:certain enterprise's internal network,Internal campus network and so on ,are also in an urgent need of a lightweight closed search engine which can run in its own internal network and easy to deploy. That is, Intranet search engine. In this paper, there are a complete description of the procedure of lightweight Chinese search engine design and development,and have Realized the function of the full-text indexing/retrieval of network information. First the paper analysis the requirement, by analysising and descripting of the requirements it Summarizes the outline of the system, Second it designs the system, definites Five modules, Data Acquisition Subsystem(download varieties of data stored online,then store them in local disk storage),Preprocessing Subsystem(purificate and extract informations, establish the corresponding inverted index In the background),Chinese word segmentation subsystem(segmentate Chinese data to Chineseword),Query subsystem (Creating a query agent , Providing services for the foreground, receiving query phrase from the foreground), Construct the framework of the whole system. It designs each class and function members detailedly.At last,it set out the code of the important function in the five major modules,describe the design and development procedure of the entire system Completetly.