An Analysis of Questions in a Q&A Site Resubmitted Based on Indications of Unclear Points of Original Questions

In these days, many of us use question and answer (Q&A) sites where we share our problems and get solutions of them. For example, about 3.11 million questions were submitted to Yahoo! chiebukuro 1 from April/2004 to October/2005. Because of this large numbers of questions, questioners had better submit questions which give enough information to answerers. However, it is difficult to make good questions. For example, in Yahoo! chiebukuro, we often found unclear questions (e.g. Q1 in Figure 1) and their answers where answerers indicated unclear points of the questions (e.g. A1 in Figure 1).