I was wondering if the researchers tried any other methods (like Association rules ,or sequence mining ). I downloaded the data set and i will give it a try anyway.:) but it would be helpful to get any pointers possible. In all,a tempting research idea. Best regards

In the selection of number of clusters and in parameter tuning, how can data from one article, say Article 3, be used for cluster size selection and parameter tuning for Article 6 if the rows of the feature matrices (n-gram frequency matrices) across articles do not correspond with each other? (For example, the first row for Article 3 data corresponds to abducted while for Article 6 it is abolitio...