In this problem you will be given a dataset containing customers, promotions given to them, and their transactions. Your task will be to predict which customers will respond to the given promotions. The dataset contains these tables: transactions.csv.gz: Transactions for all customers between 2012-03 and 2013-02 promos.csv.gz: Metadata about each promotion train_history.csv.gz: Promotions given to a subset of the customers during 2013-03 and whether or not they responded -- this will form your training data test_history.csv.gz: Promotions given to a different subset of the customers during 2013-04 -- this will be your blind test data where you have to predict whether or not they will respond