Their actions were motivated to win the competition, not improve AI in general. There are many image sets the Baidu team could have used to test on. They used t

Their actions were motivated to win the competition, not improve AI in general. There are many image sets the Baidu team could have used to test on. They used the competition's image set an unfair number of times to tweak their computation to score better on those specific images (not to improve it overall).