 Most recent work models these two subtasks jointly, either by unifying them in one structured prediction framework, or  multi-task learning through shared representations.
<clarity>  Most recent work models these two subtasks jointly, either by unifying them in one structured prediction framework, or  multi-task learning through shared representations.
 Most recent work models these two subtasks jointly, either by unifying them in one structured prediction framework, or performing multi-task learning through shared representations.