The Cost of Compression: Investigating the Impact of Compression on Parametric Knowledge in Language Models
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Abstract (arXiv)
Compressing large language models (LLMs), often consisting of billions of parameters, provides faster inference, smaller memory footprints, and enables local deployment. Two standard compression techniques are pruning and quantization, with the former eliminating redundant connections in model layers and the latter representing model parameters with fewer bits. The key tradeoff is between the degree of compression and the impact on the quality of the compressed model. Existing research on LLM compression primarily focuses on performance in terms of general metrics like perplexity or downstream task accuracy. More fine-grained metrics, such as those measuring parametric knowledge, remain significantly underexplored. To help bridge this gap, we present a comprehensive analysis across multiple model families (ENCODER, ENCODER-DECODER, and DECODER) using the LAMA and LM-HARNESS benchmarks in order to systematically quantify the effect of commonly employed compression techniques on model performance. A particular focus is on tradeoffs involving parametric knowledge, with the goal of providing practitioners with practical insights to help make informed decisions on compression. We release our codebase1 to enable further research.
Key facts. Cited by 9 papers in the map (data through 7 Oct 2026). Builds on 40 of its 53 references that are in the map. First posted on arXiv 1 Dec 2023.
Builds on
40 of 53 references.
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Built on by
Citing papers per year: 2024: 5; 2025: 2; 2026: 2.
9 papers.
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- 2024FrameQuant: Flexible Low-Bit Quantization for Transformerscited by 17
- 2024Exploring the Trade-Offs: Quantization Methods, Task Difficulty, and Model Size in Large Language Models From Edge to Giantcited by 12
- 2026Influence-Preserving Proxies for Gradient-Based Data Selection in LLM Fine-tuningcited by 9
- 2024Composable Interventions for Language Modelscited by 4
- 2025Is Compression Really Linear with Code Intelligence?cited by 2
- 2025Through a Compressed Lens: Investigating The Impact of Quantization on Factual Knowledge Recallcited by 2
- 2026Linguistic properties and model scale in brain encoding: from small to compressed language modelscited by 0
- 2026Influence-Preserving Proxies for Gradient-Based Data Selection in LLM Fine-tuning19 Feb 2026
- 2026Linguistic properties and model scale in brain encoding: from small to compressed language models7 Feb 2026
- 2025Through a Compressed Lens: Investigating The Impact of Quantization on Factual Knowledge Recall20 May 2025
- 2025Is Compression Really Linear with Code Intelligence?16 May 2025
- 2024Exploring the Trade-Offs: Quantization Methods, Task Difficulty, and Model Size in Large Language Models From Edge to Giant17 Sep 2024
- 2024Accuracy is Not All You Need12 Jul 2024
- 2024Composable Interventions for Language Models9 Jul 2024
- 2024Decoding Compressed Trust: Scrutinizing the Trustworthiness of Efficient LLMs Under Compression18 Mar 2024
- 2024FrameQuant: Flexible Low-Bit Quantization for Transformers10 Mar 2024