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EEE-QA: Exploring Effective and Efficient Question-Answer Representations
March 5, 2024, 2:52 p.m. | Zhanghao Hu, Yijun Yang, Junjie Xu, Yifu Qiu, Pinzhen Chen
cs.CL updates on arXiv.org arxiv.org
Abstract: Current approaches to question answering rely on pre-trained language models (PLMs) like RoBERTa. This work challenges the existing question-answer encoding convention and explores finer representations. We begin with testing various pooling methods compared to using the begin-of-sentence token as a question representation for better quality. Next, we explore opportunities to simultaneously embed all answer candidates with the question. This enables cross-reference between answer choices and improves inference throughput via reduced memory usage. Despite their simplicity …
abstract arxiv challenges convention cs.cl current encoding explore language language models next pooling quality question question answering representation roberta testing token type work
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