Fig. 3:

Comparing the combined training scheme with each of the proposed individual training schemes, we conduct statistical analyses between the top two training schemes as well as between the bottom two. Although some of the individual training schemes could be favorable for certain target tasks, there is no such clear clue to guarantee that any one of the individual training schemes would consistently offer the best performance on every target task. On the contrary, our combined training scheme consistently achieves the best results across all five target tasks.