Challenge: Existing compression methods suffer from bottleneck issues when compression ratio is increased.
Approach: They propose a novel approach to combine low-rank decomposition and quantization methods to reduce the compression bottleneck.
Outcome: The proposed method reduces the computational and memory overhead of existing methods while maintaining model accuracy.

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When Compression Meets Model Compression: Memory-Efficient Double Compression for Large Language Models (2024.findings-emnlp)

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Challenge: Large language models (LLMs) exhibit excellent performance in various tasks, but memory requirements present a challenge when deploying on memory-limited devices.
Approach: They propose a framework to compress LLM after quantization further, achieving about 2.2x compression ratio.
Outcome: The proposed model can achieve 40% reduction in memory size with negligible loss in accuracy and inference speed.
1+1>2: A Synergistic Sparse and Low-Rank Compression Method for Large Language Models (2025.findings-emnlp)

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Challenge: Low-rank approximation compresses the model by retaining its essential structure with minimal information loss.
Approach: They propose a method that leverages the strengths of pruning and low-rank approximation for LLMs.
Outcome: The proposed methods surpass the existing methods on LLaMA and Qwen2.5 models.
Revisiting Pruning vs Quantization for Small Language Models (2025.findings-emnlp)

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Challenge: Compressing Small Language Models (SLMs) is particularly suited for resource-constrained devices, but their compression dynamics remain underexplored compared to Large Language Model (LLMs).
Approach: They evaluated post-training pruning and quantization methods across six SLMs from 0.5 to 3.8B, seven languages, and seven downstream tasks.
Outcome: The proposed methods outperform pruning and quantization on six SLMs from 0.5 to 3.8B, seven languages, and seven downstream tasks.
Adaptive Feature-based Low-Rank Compression of Large Language Models via Bayesian Optimization (2024.findings-emnlp)

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Challenge: Large language models require a balance between efficiency and performance.
Approach: They propose a low-rank compression technique that reduces non-essential parameters by decomposing weight matrices into products of two low-ranked matrici.
Outcome: The proposed method outperforms existing pruning and low-rank compression techniques in maintaining model performance at the same compression ratio.
The Cost of Compression: Investigating the Impact of Compression on Parametric Knowledge in Language Models (2023.findings-emnlp)

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Challenge: Existing research on LLM compression focuses on general metrics like perplexity or downstream task accuracy.
Approach: They propose to quantify the effect of pruning and quantization on model quality . they use the LAMA and LM-Harness benchmarks to quantify compression techniques .
Outcome: The proposed compression techniques provide faster inference, smaller memory footprints, and enables local deployment.
A Comprehensive Evaluation of Quantization Strategies for Large Language Models (2024.findings-acl)

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Challenge: Quantization studies have focused on instruction-tuned LLMs, leaving their performance on other benchmarks unclear.
Approach: They propose a framework to evaluate quantized large language models using four dimensions . they propose to reduce the bits needed for model weights or activations with minimal performance loss .
Outcome: The proposed framework can retain comparable performance to non-quantized LLMs on most benchmarks.
DL-QAT: Weight-Decomposed Low-Rank Quantization-Aware Training for Large Language Models (2024.emnlp-industry)

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Challenge: Quantization-aware Training (QAT) is a popular technique for reducing memory usage and improving computational efficiency in large language models.
Approach: They propose a weight-decomposed low-rank quantization-aware training approach that integrates QAT with a group-specific quantization magnitude adjustment.
Outcome: The proposed method outperforms the state-of-the-art method on LLaMA and LLama2 models.
Compression of Generative Pre-trained Language Models via Quantization (2022.acl-long)

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Challenge: Existing methods to compress generative pre-trained language models fail on generative tasks due to homogeneous word embeddings and limited memory.
Approach: They propose a token-level contrastive distillation method to learn distinguishable word embeddings and a module-wise dynamic scaling method to make quantizers adaptive to different modules.
Outcome: The proposed method outperforms the state-of-the-art compression methods on generative PLMs by a clear margin.
LLMC: Benchmarking Large Language Model Quantization with a Versatile Compression Toolkit (2024.emnlp-industry)

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Challenge: Existing quantization techniques have been categorized as 'simple' and 'highly efficient' however, their configurations vary from each other and cannot be fairly compared .
Approach: They propose a plug-and-play compression toolkit to explore the impact of quantization.
Outcome: The proposed toolkit explores the impact of quantization on large language models.
FLRC: Fine-grained Low-Rank Compressor for Efficient LLM Inference (2025.emnlp-main)

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Challenge: Low-rank compression can reduce memory usage and computational demand, but results are poor during decoding.
Approach: They propose a fine-grained low-rank compression algorithm that determines optimal rank allocation for each layer and incorporates progressive low-ranked decoding to maintain text generation quality.
Outcome: The proposed approach outperforms state-of-the-art methods on summarization tasks and on understanding tasks.

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