Abstract
In order to eliminate mismatches between the intentions of questioners and respondents of Question and Answer sites, we have experimentally evaluated the impressions of 60 questioners and their responses posted at Yahoo! Chiebukuro. By applying factor analysis to the scores of the experiment, the impression of the statements could be captured by nine factors. Factor scores of other features are interpreted as syntactic information, word imageability, and closing sentence expressions. As a result, the overall estimation accuracy is good: the accuracy of the estimated values of seven factors is good, while that of the other two factors is fairly good. The estimation accuracy of these two factors should be improved. This paper improves the estimation accuracy by adopting new feature values of statements: word familiarity and notation validity. We show that the estimation accuracy can sufficiently be improved by using them as well as the conventional feature values.
