Language Models as Zero-shot Lossless Gradient Compressors: Towards General Neural Parameter Prior Models

• URL: http://arxiv.org/abs/2409.17836v1
• Date: Thu, 26 Sep 2024 13:38:33 GMT
• Title: Language Models as Zero-shot Lossless Gradient Compressors: Towards General Neural Parameter Prior Models
• Authors: Hui-Po Wang, Mario Fritz
• Abstract summary: Large language models (LLMs) can act as gradient priors in a zero-shot setting. We introduce LM-GC, a novel method that integrates LLMs with arithmetic coding.
• Score: 66.1595537904019
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Despite the widespread use of statistical prior models in various fields, such models for neural network gradients have long been overlooked. The inherent challenge stems from their high-dimensional structures and complex interdependencies, which complicate effective modeling. In this work, we demonstrate the potential of large language models (LLMs) to act as gradient priors in a zero-shot setting. We examine the property by considering lossless gradient compression -- a critical application in distributed learning -- that depends heavily on precise probability modeling. To achieve this, we introduce LM-GC, a novel method that integrates LLMs with arithmetic coding. Our technique converts plain gradients into text-like formats, enhancing token efficiency by up to 38 times compared to their plain representations. We ensure that this data conversion maintains a close alignment with the structure of plain gradients and the symbols commonly recognized by LLMs. Our experiments indicate that LM-GC surpasses existing state-of-the-art lossless compression methods, improving compression rates by 10\% up to 17.2\% across various datasets and architectures. Additionally, our approach shows promising compatibility with lossy compression techniques such as quantization and sparsification. These findings highlight the significant potential of LLMs as a model for effectively handling gradients. We will release the source code upon publication.

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