Multitask learning has also been used for other classification and regression tasks in language processing, mostly for domain adaptation (Daume III, 2007;Finkel and Manning, 2009), but also more recently for tasks such as multi-emotion analysis (Beck et al., 2014), where the each emotion explaining a text is defined as a task.
in all previous work the focus has been on addressing task variance coupled with data scarcity, which makes them different from the work we describe in this paper.