Submissions are evaluated on [area under the ROC curve](http://en.wikipedia.org/wiki/Receiver_operating_characteristic) between the predicted probability and the observed target.


## Submission File
For each `id` in the test set, you must predict a probability for the `target` variable. The file should contain a header and have the following format:

    id,target
    3,0.1
    9,0.7
    11,0.5
    etc.