We have developed a news portal site called Fair News Reader (FNR) that recommends news articles with different sentiments
for a user in each of the topics in which the user is interested. FNR can detect various sentiments of news articles, and
determine the sentimetal preferences of a user based on the sentiments of previously read articles by the user. While there
are many news portal sites on the Web, such as GoogleNews, Yahoo!, and MSN News, they can not recommend and present news articles
based on the sentiments they are likely to create since they simply select articles based on whether they contain user-specified
keywords. FNR collects and recommends news articles based on the topics in which the user is interested and the sentiments
the articles are likely to create. Eight of the sentiments each article is likely to create are represented by an “article
vector” with four elements. Each element corresponds to a measure consisting of two symmetrical sentiments. The sentiments
of the articles previously read with respect to a topic are then extracted and represented as a “user vector”. Finally, based
on a comparison between the user and article vectors in each topic, FNR recommends articles that have symmetric sentiments
against the sentiments of read articles by the user for fair reading about the topic. Evaluation of FNR using two experiments
showed that the user vectors can be determined by FNR based on the sentiments of the read articles about a topic and that
it can provide a unique interface with categories containing the recommended articles.