UNIFIEDQA: Crossing Format Boundaries with a Single QA System
UNIFIEDQA: Crossing Format Boundaries with a Single QA System
Question answering (QA) tasks have been posed using a variety of formats, such as extractive span selection, multiple choice, etc. This has led to format-specialized models, and even to an implicit division in the QA community. We argue that such boundaries are artificial and perhaps unnecessary, given the reasoning abilities …