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- W3091818471 abstract "Multiple-Choice Question Answering (MCQA) is one of the challenging tasks in machine reading comprehension. The main challenge in MCQA is to extract evidence from the given context that supports the correct answer. In OpenbookQA dataset [1], the requirement of extracting evidence is particularly important due to the mutual independence of sentences in the context. Existing work tackles this problem by annotated evidence or distant supervision with rules which overly rely on human efforts. To address the challenge, we propose a simple yet effective approach termed evidence filtering to model the relationships between the encoded contexts with respect to different options collectively, and to potentially highlight the evidence sentences and filter out unrelated sentences. In addition to the effective reduction of human efforts of our approach compared, through extensive experiments on OpenbookQA, we show that the proposed approach outperforms the models that use the same backbone and more training data; and our parameter analysis also demonstrates the interpretability of our approach." @default.
- W3091818471 created "2020-10-15" @default.
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- W3091818471 date "2022-05-23" @default.
- W3091818471 modified "2023-10-14" @default.
- W3091818471 title "Context Modeling with Evidence Filter for Multiple Choice Question Answering" @default.
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- W3091818471 doi "https://doi.org/10.1109/icassp43922.2022.9747889" @default.
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