Abstract:

The college online community is one of the major platforms for accessing student’s value orientation, mental characteristics and political tendency How to collect development trend of college online community accurately and scientifically, to provide scientific decision for students’ political and ideological education and to promote the construction of harmonious campus has been an important topic on colleges’ moral education in the new era Full text retrieval is the main technology to get data to do data mining, while to get retrieving information accurately in full text retrieval is the basis of data mining In different situations, doing synonyms retrieval is one of the important demands to get retrieving data Using analyzer to calculate synonyms information during online communication will make analyzer more accurate, and users can obtain development dynamics scientifically of online community 

Key words: college online community; , ideological trend, Lucene analyzer, synonyms retrieval