@inproceedings{oai:nagoya.repo.nii.ac.jp:00018580, author = {Uchida, Yuki and Yoshikawa, Tomohiro and Furuhashi, Takeshi and Hirao, Eiji and Iguchi, Hiroto}, book = {SCIS & ISIS}, month = {}, note = {Recently, the sites in internet on which users can write private ideas and opinions are increasing. In addition, the number of people who want to know other's opinions about the interested products is also increasing. However, it is very difficult for people to read whole reviews on internet. This study tries to develop a new review analysis system which shows evaluation information about products using graph structure of evaluation keywords. This paper focuses on the part of extraction of evaluation keywords from reviews on internet. This paper shows the extraction method for evaluation keywords and the result of keyword graph structure with extracted evaluation words. It employs HK Graph (Hierarchical Keyword Graph) which can visualize the relationship among words with hierarchical network structure based on the co-occurrence information for the keyword graph., Joint 4th International Conference on Soft Computing and Intelligent Systems and 9th International Symposium on advanced Intelligent Systems, September 17-21, 2008, Nagoya University, Nagoya, Japan, Session ID: TH-G3-5}, pages = {376--379}, publisher = {日本知能情報ファジィ学会}, title = {Evaluation of Products by Analysis of User-Review using HK Graph}, volume = {2008}, year = {2008} }