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Trust but Verify! A Survey on Verification Design for Test-time Scaling
Created by
Haebom
Author
V Venktesh, Mandeep Rathee, Avishek Anand
Outline
This paper surveys the role of the verifier and various approaches in Test-Time Scaling (TTS), a novel method for improving the performance of large-scale language models (LLMs). TTS improves the inference process and task performance of LLMs by utilizing more computational resources during the inference process. The verifier acts as a reward model that evaluates candidate outputs generated during the decoding process and selects the optimal output. It has emerged as a promising approach due to its parameter-free scaling and high performance. This paper presents an integrated perspective on various verification methods and their training mechanisms presented in previous studies, covering various types of verifiers, including prompt-based, discriminative, or generative models fine-tuned. The paper provides a related code repository ( https://github.com/elixir-research-group/Verifierstesttimescaling.github.io) .
Takeaways, Limitations
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Takeaways:
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By systematically organizing the role and importance of verifiers in TTS and presenting various approaches in an integrated manner, we provide a comprehensive understanding of TTS research.
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Provides insights into the training methods, types, and usefulness of verifiers in TTS.
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Contribute to the reproducibility and advancement of TTS research through the provided code repository.
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Limitations:
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This paper is a survey paper and does not present a new methodology.
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Detailed analysis of the verifier's performance evaluation may be lacking.
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A more in-depth comparative analysis of the relative pros and cons of various verification methods is needed.