Application of 2-gram to English Q&A Statements to Obtain Factor Scores

In order to solve the issues of mismatches between the intentions of questioners and respondents of Question and Answer (Q&A) sites, impression evaluation experiments have resulted in obtaining nine factors of impressions for Japanese Q&A statements. The feature values of syntactic information were initially extracted through morphological analysis and utilized for multiple regression analysis to obtain factor scores for any Q&A statements. The calculation of factor scores has also been realized by extracting syntactic information through N-gram applied to Part-of-Speech extracted by way of morphological analysis. However, most of our methods so far have been dependent on Japanese, and so we need to validate if our method can be extended to other languages as well. So far, in a similar way as in Japanese, the nine factors have also experimentally been obtained from English Q&A statements. It was confirmed as well that the factor scores were calculated using the feature values of English statements extracted through morphological analysis. Therefore, in this paper, 2-gram as well as morphological analysis was applied to the feature values of English Q&A statements. As a result of multiple regression analysis, it has been shown that the application of 2-gram would result in as good an accuracy as morphological analysis for all nine factors. Therefore, it could be concluded that 2-gram would be applicable to our method in English as well.