predicting cancel users in offline events
Post on 03-Jul-2015
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Predicting Cancel Usersin Offline Events
@y_benjohttp://d.hatena.ne.jp/repose/
Today’s LT: MLMachine Learning
Offline EventsMeetup
User ConfYaki-ton
Problem
Cancel Users
概要
• ファッキンドタキャン野郎を予測したい
Solve:Predict #Cancel
Data
• Source: ATND Beta (atnd.org/events/)
• 17,343 Events (ignore outliers)
• 99,911 Users
• Model: Support Vector Regression
Results
0
3
6
9
12
15
Average Title Title + Body
Mean Square Error
Better
11.4383
Features
word scorehbstudy 1.475bpstudy 1.174増員 1.062
appbank 0.7711981 0.709
Future work
• Why bad ?
• Output minus #cancel
• Too simple: Use Metadata(location, time, similar events ...)
• Another approach: User based model
• Make Blacklist
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