@staticmethod
    def idf_weight_log(N, df):
        assert(df > 0)
        return log(N/df)
Watching a forum and replying to a thread should send email.
dataset/ETHPy150Open taherh/pysimsearch/pysimsearch/query_scorer.py/TFIDFQueryScorer.idf_weight_log--crossover with--dataset/ETHPy150Open mozilla/kitsune/kitsune/forums/tests/test_notifications.py/NotificationsTests.test_watch_forum_then_new_post