216,170 questions posted in 100 topical categories
Answer Relationship (QA), Asker history (UH), and Cat-by 158,515 askers, with associated 1,963,615 an-
egory (CA).swers in total. More detailed statistics, arranged by
of the three during development, so we report results
the number of questions posted by each asker are
using SVM for all the subsequent experiments.
reported in (Table 2). The askers with only one
question (i.e., no prior history) dominate the dataset,
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