WebBrain: Learning to Generate Factually Correct Articles for Queries by Grounding on Large Web CorpusDownload PDF

Published: 01 Feb 2023, Last Modified: 29 Sept 2024Submitted to ICLR 2023Readers: Everyone
Keywords: factual generation, retrieval-augmented generation, new large-scale dataset
Abstract: In this paper, we introduce a new NLP task – generating short factual articles for queries by mining supporting evidence from the Web. In this task, called WebBrain, the ultimate goal is to generate a fluent, informative, and factually-correct short article (e.g., Wiki article) for a factual query unseen in Wikipedia. To enable experiments on WebBrain, we construct a large-scale dataset WebBrain-Raw by extracting English Wikipedia articles and their crawlable Wiki references. WebBrain-Raw is ten times larger than the previous biggest peer dataset, which can greatly benefit the research community. Besides, we empirically analyze the performances of the current state-of-the-art NLP techniques on WebBrain and introduce a new framework ReGen, which enhances the generation factualness by improved evidence retrieval and task-specific pre-training for generation. Experiment results show that ReGen outperforms all baselines in both automatic and human evaluations.
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