Research On Full-text Retrieval Technology In Education Resource Sharing System

Educationresourcesharingtechnologyhasbecomeafocusresearch inthefieldofmodern network education. But how to retrieve the education resources which theconsumerneedsaccuratelyisthekeytechnology ofinformationretrievalarea.Firstly,westudyonthe invertedindex theory, indexconstructionandmaintance,compression technology and the retrieval algorithm. The author improves the retrievalalgorithm which based on the skip pointer to reduce the number of scanning records,and acceleratesthe retrieval speed.Secondly, against on the problem that the relationaldatabase is very slow when it indexes and retrieves the unstructured data, a databasedesign schema is presented, which combines the full-text database and relationaldatabase technology. It improves data index and retrieval performance and realizes theeffective management of resources and index database. Finally, for the actual needs ofthe sharing of educational resources, we design a new full-text retrieval technologyarchitecture and system model which based on the Lucene full-text retrievaltechnology framework, realize the main four functional modules which include thedefinitionandclassificationofeducationresources,dataprocessing,indexandfull-textretrieval. At the same time, we do the ranking score for the retrieval results. Theexperiment results show that the index and retrieval performance reach the systemrequirement.