document: Content hole search in community-type content In community-type content such as blogs and SNSs , we call the user 's unawareness of information as a `` content hole '' and the search for this information as a `` content hole search . '' A content hole search differs from similarity searching and has a variety of types . In this paper , we propose different types of content holes and define each type . We also propose an analysis of dialogue related to community-type content and introduce content hole search by using Wikipedia as an example .
doc_bio_tags: B I I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I I O O O B I I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I I O O O O O O O