A major difference in the two data sets was the source of negative instances. <cite>Yang et al. (2015)</cite> borrowed negative instances from different genres such as news websites and proverbs. But, in Talk-to-Talk, both positive and negative instances were from the same genre. Furthermore, each humorous instance had a corresponding non-humorous instance from the same talk. In this section, we investigate the impact of genre differences in the humor classification task, using Pun and Talk data.