Mixture of Soft Prompts for Controllable Data Generation

• URL: http://arxiv.org/abs/2303.01580v2
• Date: Wed, 18 Oct 2023 03:31:02 GMT
• Title: Mixture of Soft Prompts for Controllable Data Generation
• Authors: Derek Chen, Celine Lee, Yunan Lu, Domenic Rosati, Zhou Yu
• Abstract summary: Mixture of Soft Prompts (MSP) is proposed as a tool for data augmentation rather than direct prediction. Our method achieves state-of-the-art results on three benchmarks when compared against strong baselines.
• Score: 21.84489422361048
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Large language models (LLMs) effectively generate fluent text when the target output follows natural language patterns. However, structured prediction tasks confine the output format to a limited ontology, causing even very large models to struggle since they were never trained with such restrictions in mind. The difficulty of using LLMs for direct prediction is exacerbated in few-shot learning scenarios, which commonly arise due to domain shift and resource limitations. We flip the problem on its head by leveraging the LLM as a tool for data augmentation rather than direct prediction. Our proposed Mixture of Soft Prompts (MSP) serves as a parameter-efficient procedure for generating data in a controlled manner. Denoising mechanisms are further applied to improve the quality of synthesized data. Automatic metrics show our method is capable of producing diverse and natural text, while preserving label semantics. Moreover, MSP achieves state-of-the-art results on three benchmarks when compared against strong baselines. Our method offers an alternate data-centric approach for applying LLMs to complex prediction tasks.

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