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We propose a new model, DocHopper, that iteratively attends to different parts of long, hierarchically structured documents to answer complex questions.
A hierarchical model of reviews for aspect-based sentiment analysis
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Haitian Sun, Tania Bedrax-Weiss, and William W. Cohen · 2019
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Etc: Encoding long and structured inputs in transformers
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Bhuwan Dhingra, Manzil Zaheer, Vidhisha Balachandran, Graham Neubig, Ruslan Salakhutdinov, and William W Cohen · 2020
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Discern: Discourse-aware entailment reasoning network for conversational machine reading
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