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Summary of Laco: Large Language Model Pruning Via Layer Collapse, by Yifei Yang et al.


LaCo: Large Language Model Pruning via Layer Collapse

by Yifei Yang, Zouying Cao, Hai Zhao

First submitted to arxiv on: 17 Feb 2024

Categories

  • Main: Computation and Language (cs.CL)
  • Secondary: Artificial Intelligence (cs.AI)

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Summary difficulty Written by Summary
High Paper authors High Difficulty Summary
Read the original abstract here
Medium GrooveSquid.com (original content) Medium Difficulty Summary
The proposed Layer Collapse (LaCo) method is a concise layer-wise structured pruner that reduces the size of large language models (LLMs) based on transformers while preserving their structure. The LaCo method collapses rear model layers into prior layers, enabling rapid size reduction and outperforming existing state-of-the-art structured pruning methods. Comprehensive experiments show an average task performance of over 80% at pruning ratios of 25-30%. Post-training experiments confirm that LaCo effectively inherits the parameters of the original model.
Low GrooveSquid.com (original content) Low Difficulty Summary
Large language models are getting bigger, which makes them expensive to train and use. Researchers have tried different ways to make these models smaller without losing their abilities. However, these methods have limitations, such as needing a lot of training data or changing how the model works inside. A new method called LaCo tries to solve this problem by collapsing some parts of the model into others. This helps reduce the size of the model while keeping its original structure. The results show that LaCo is better than other methods at preserving the model’s abilities when it gets smaller.

Keywords

» Artificial intelligence  » Pruning