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Ao Wu

2 accepted papers

2022

Clues Before Answers: Generation-Enhanced Multiple-Choice QA

NAACL 2022long

A trending paradigm for multiple-choice question answering (MCQA) is using a text-to-text framework. By unifying data in different tasks into a single text-to-text format, it trains a generative encoder-decoder model which is both powerful and universal. However, a side effect of twisting a generati…

2021

When Retriever-Reader Meets Scenario-Based Multiple-Choice Questions

EMNLP 2021finding

Scenario-based question answering (SQA) requires retrieving and reading paragraphs from a large corpus to answer a question which is contextualized by a long scenario description. Since a scenario contains both keyphrases for retrieval and much noise, retrieval for SQA is extremely difficult. Moreov…