%relevant).  

In total, the dataset contains 24162 unique entity-document

pairs, vital or relevant; 9521 of these have been labelled as vital,

and the remaining 17424 as relevant.

All documents are categorized into 8 source categories: 0.98\%

arxiv(a), 0.034\% classified(c), 0.34\% forum(f), 5.65\% linking(l),

50.2\% weblog(w). We have regrouped these source categories into three

groups ``news'', ``social'', and ``other'', for two reasons: 1) some groups

are very similar to each other. Mainstream-news and news are

similar. The reason they exist separately, in the first place,  is

because they were collected from two different sources, by different

groups and at different times. we call them news from now on.  The