在多任务学习中，当这些任务是相关的，联合的任务学习应该比单独学习每个任务的效果好，特别当每个任务的数据相当少的时候，在这种情况下，独自学习是很不成功的。(In multitask learning, when these tasks are related, joint task learning should be better than learning each task individually, especially when the data of each task is quite small, in this case, learning alone is very unsuccessful.)