Socratic Pretraining: Question-Driven Pretraining for Controllable Summarization

• URL: http://arxiv.org/abs/2212.10449v3
• Date: Thu, 8 Jun 2023 22:43:58 GMT
• Title: Socratic Pretraining: Question-Driven Pretraining for Controllable Summarization
• Authors: Artidoro Pagnoni, Alexander R. Fabbri, Wojciech Kry\'sci\'nski, Chien-Sheng Wu
• Abstract summary: Socratic pretraining is a question-driven, unsupervised pretraining objective designed to improve controllability in summarization tasks. Our results show that Socratic pretraining cuts task-specific labeled data requirements in half.
• Score: 89.04537372465612
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In long document controllable summarization, where labeled data is scarce, pretrained models struggle to adapt to the task and effectively respond to user queries. In this paper, we introduce Socratic pretraining, a question-driven, unsupervised pretraining objective specifically designed to improve controllability in summarization tasks. By training a model to generate and answer relevant questions in a given context, Socratic pretraining enables the model to more effectively adhere to user-provided queries and identify relevant content to be summarized. We demonstrate the effectiveness of this approach through extensive experimentation on two summarization domains, short stories and dialogue, and multiple control strategies: keywords, questions, and factoid QA pairs. Our pretraining method relies only on unlabeled documents and a question generation system and outperforms pre-finetuning approaches that use additional supervised data. Furthermore, our results show that Socratic pretraining cuts task-specific labeled data requirements in half, is more faithful to user-provided queries, and achieves state-of-the-art performance on QMSum and SQuALITY.

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