Adform click prediction dataset

This data is a sample of Adform's ad traffic. Each record corresponds to an ad impression served by Adform, and consists of a single binary label (clicked/not-clicked) and a selected subset of features (c0-c9). The positives and negatives are downsampled at different rates. The data is chronologically ordered. The file is gzipped and each line corresponds to a single record, serialized as JSON. The JSON has the following fields: "l": The binary label indicating whether the ad was clicked (1) or not (0). "c0" - "c9": Categorical features which were hashed into a 32-bit integer. The semantics of the features are not disclosed. The values are stored in an array, because some of the features have multiple values per record. When a key is missing, the field is empty. The files are named "adform.click.2017.xx.json.gz", where "xx" is the index (01-05). The files are indexed chronologically, and the records (lines) in the file within are ordered chronologically.