100 842 4,528 14QA

50-100

842

4,528

14

QA: QA KL div wikipedia

KL Divergence of all answers with Wikipedia corpus

Total:

216,170

1,963,615

158,515

Asker User History Features

UH: UH questions resolved

Number of questions resolved in the past

Table 2: Distribution of questions, answers and askers

UH: UH num answers

Number of all answers this user has received in the past

.

UH: UH more recent rating

Rating for the last question before current question

UH: UH avg past rating

Average rating given when closing questions in the past

Hence, we focus on the Precision, Recall, and F1

Category Features

values for the satisfied class.

CA: CA avg time to close

Average interval between opening and closing

CA: CA avg num answers

Average number of answers for that category

Datasets: Our data was based on a snapshot of Ya-

CA: CA avg asker rating

Average rating given by asker for category

CA: CA avg num votes

Average number of “best answer” votes in category

hoo! Answers crawled in early 2008, containing

Table 1: Sample features: Question (Q), Question-