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This Machine Learning Paper Introduce PISSA: Principal Singular Values and Singular Vectors Adaptation of Large Language Models

 This Machine Learning Paper Introduce PISSA: Principal Singular Values and Singular Vectors Adaptation of Large Language Models

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Introducing PiSSA: Principal Singular Values and Singular Vectors Adaptation of Large Language Models

Overview

Fine-tuning large language models (LLMs) can enhance task performance and adherence to instructions, but it often comes with high GPU memory costs. To address this, parameter-efficient fine-tuning (PEFT) methods like PiSSA have been introduced, offering practical solutions to reduce memory usage without sacrificing performance.

Practical Solutions and Value

PiSSA optimizes a reduced parameter space by utilizing Singular Value Decomposition (SVD) to factorize matrices within the model. This method initializes adapters with principal components, leading to superior fine-tuning performance compared to other methods like LoRA. PiSSA offers an efficient and easy-to-use initialization method, demonstrating robust superiority under similar trainable parameter configurations.

Benefits

By efficiently identifying and fine-tuning the model’s principal components, PiSSA offers a promising approach to PEFT. It aligns closely with training data, converges swiftly, and balances initialization speed and performance through the use of the Fast SVD technique.

AI Solutions

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Vladimir Dyachkov, Ph.D
Editor-in-Chief itinai.com

I believe that AI is only as powerful as the human insight guiding it.

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