Research And Design Of Military Document Retrieval System Base On LUCENE

Military document, including the usual document and operational document. It is an important tool and basic means with which military organs play their roles, direct battles and manage troops. As documents of the military authorities, military document play interface in the coherence in commanders and command organs, controlling command objects, commanding the same level training, working, drilling and operations activities. And the documents directly impact on the organs of information dissemination, management, services, and communication with lower-level, consult report to the higher, coordination between flat-level. With the development of the technology of computer and the evolution of the information, the amount of military document information has been rising in unimaginable speed. Military network has been becoming the important vast information resource of the military document. How to find appropriate military document has been a serious problem increasingly. This paper makes deep and detailed study on the military document search system based on Lucene.The full-text search engine is introduced as its w formation and development, system architecture and so on. The collecting, indexing, retrieval and related technical of search engines are in-depth studied.. The building and using of full-text search system are deeply analyzed. The source code of Lucene in Apache full-text search system is analyzed. The system structured, the system features, the data stream and the structure of index file in Lucene system are deeply studied. The important packages in Lucene are analyzed. The process of indexing and the measure of indexing are understand. The key technologies of military instruments retrieval system based on the Lucene are proposed. First, the documents analysis technology is analyzed and the Chinese word segmentation is studied. Second, the system indexing process is put forward and the index data structure and indexes organizing mode is focused on. Final, the system's search technology is studied; the typical search technology is analyzed.By researching the main technologies of military document search engine, a information search engine was designed and built about military document. The needs of the system are analyzed and system framework and structure are proposed. The various subsystems, such as information search subsystem, the index subsystem, the removing repeated page, are detailed designed and implemented, and gives part of the design code. The military document search system based on Lucene has good scalability. It fits not only the general search engine system, but also the professional document search system used widely at present.