Abstract
In community QA sites as a service for knowledge sharing among anonymous people, it is thought that considering expectations for answers of questioned users is effective to improve the quality of answers. In this paper, we define 5 content types for questions, e.g. fact or opinion, and 6 expected attributes for answers, e.g. diversity or objectivity, as aspects of demands of questioned users. We experimented that 30 testers judge those types and attributes for over 800 questions in NTCIR-8 CQA test collection. As a result, we confirmed questions classifications using 6 attributes were more detailed than using 5 types.
