Knowledge Prompts: Injecting World Knowledge into Language Models through Soft Prompts

• URL: http://arxiv.org/abs/2210.04726v1
• Date: Mon, 10 Oct 2022 14:31:16 GMT
• Title: Knowledge Prompts: Injecting World Knowledge into Language Models through Soft Prompts
• Authors: Cicero Nogueira dos Santos, Zhe Dong, Daniel Cer, John Nham, Siamak Shakeri, Jianmo Ni, Yun-hsuan Sung
• Abstract summary: We introduce a method to train soft prompts via self-supervised learning on data from knowledge bases. The resulting soft knowledge prompts (KPs) are task independent and work as an external memory of the LMs.
• Score: 8.425194277824996
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Soft prompts have been recently proposed as a tool for adapting large frozen language models (LMs) to new tasks. In this work, we repurpose soft prompts to the task of injecting world knowledge into LMs. We introduce a method to train soft prompts via self-supervised learning on data from knowledge bases. The resulting soft knowledge prompts (KPs) are task independent and work as an external memory of the LMs. We perform qualitative and quantitative experiments and demonstrate that: (1) KPs can effectively model the structure of the training data; (2) KPs can be used to improve the performance of LMs in different knowledge intensive tasks.

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