Good clicklog datasets are hard to come by. Luckily CriteoLabs released a week’s worth of data — a whopping ~11GB! — for a new Kaggle contest. The task is to predict the click-through-rate for ads. We will use online machine learning with Vowpal Wabbit to beat the logistic regression benchmark and get a nr. 1 position on the leaderboard. Updates Demo with data from this contest added to Vowpal Wab