Return the clssic IMDB sentiment analysis training data in a nice package.

    Full data is at: http://ai.stanford.edu/~amaas/data/sentiment/aclImdb_v1.tar.gz
    Paper to cite when using the data is: http://www.aclweb.org/anthology/P11-1015

def imdb(display=False):
    """ Return the clssic IMDB sentiment analysis training data in a nice package.

    Full data is at: http://ai.stanford.edu/~amaas/data/sentiment/aclImdb_v1.tar.gz
    Paper to cite when using the data is: http://www.aclweb.org/anthology/P11-1015
    """

    with open(cache(github_data_url + "imdb_train.txt")) as f:
        data = f.readlines()
    y = np.ones(25000, dtype=np.bool)
    y[:12500] = 0
    return data, y