[ Purpose/significance ] This paper explores the community structure and community membership of the research interest similarity network of core authors in information science. [ Method/process ] We firstly download all pa- pers of information science retrieved in CSSCI database using the China Library Category number. By recognizing the core -authors in this discipline with Price law, we compute the similarity between each two authors with bag-of-words model and construct the research interest similarity network of core authors. Then we divid...