Challenge: Large language models (LLMs) are proficient in natural language processing tasks, but their deployment is limited by extensive parameter sizes and computational demands.
Approach: They propose a method to enhance computational efficiency in large language models by 4-bit weight and 8-bit activation quantization.
Outcome: The proposed techniques significantly boost task accuracies to levels comparable with full-precision models.

Similar Papers

Achieving binary weight and activation for LLMs using Post-Training Quantization (2025.findings-acl)

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Challenge: Existing methods for quantizing large language models suffer from performance degradation when weights are quantized to 1 bit.
Approach: They propose a post-training quantization framework with W(1+1)A(14) configuration . they propose utilizing Hessian-aware fine-grained grouping along with an EM-based quantization scheme .
Outcome: The proposed method surpasses state-of-the-art (SOTA) LLM quantization baselines on W2A4 across multiple tasks.
ATQ: Activation Transformation forWeight-Activation Quantization of Large Language Models (2024.findings-emnlp)

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Challenge: Quantization methods are available to solve the problem of high computational and storage costs for Large language models.
Approach: They propose an INT8 weight-activation quantization method that can achieve lossless accuracy.
Outcome: The proposed method can achieve lossless accuracy on OPT and LLaMA families.
LRQ: Optimizing Post-Training Quantization for Large Language Models by Learning Low-Rank Weight-Scaling Matrices (2025.naacl-long)

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Challenge: Existing methods for quantizing weights and activations of large language models suffer from non-negligible accuracy drops, especially on massive multitask language understanding.
Approach: They propose a weight-activation quantization method that reconstructs the outputs of an intermediate Transformer block by leveraging low-rank weight-scaling matrices.
Outcome: The proposed method reduces the complexity of the weight-activation quantization techniques while achieving high throughput and reducing inference costs.
ACBQ: Adaptive Cross-Block Quantization of Large Language Models (2026.acl-long)

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Challenge: Existing methods for post-training quantization struggle to support weight–activation joint quantization and extreme low-bit weight quantization.
Approach: They propose a framework that addresses weight–activation joint quantization and extreme weight quantization.
Outcome: The proposed framework achieves superior performance under both W4A4 and highly aggressive W2 settings while incurring negligible additional computational overhead.
PE-QAT: Parameter-Efficient Quantization-Aware Training for Large Language Models (2026.acl-srw)

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Challenge: Quantization Aware Training (QAT) is expensive to train and unscalable to large models.
Approach: They propose a parameter-efficient framework targeting per-channel 4-bit weight-activation quantization of large language models.
Outcome: The proposed framework preserves accuracy within 0.11 percentage points of the full-precision baseline on Llama-2-7B zero-shot tasks while training only 1.26% of total parameters.
EfficientQAT: Efficient Quantization-Aware Training for Large Language Models (2025.acl-long)

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Challenge: Quantization-aware training (QAT) is a low-bit training solution that requires substantial training resources.
Approach: They propose an algorithm that reduces memory consumption by low-bit representations with minimal accuracy loss.
Outcome: EfficientQAT achieves 2-bit Llama-2-70B model on single GPU in 41 hours . compared to previous methods, it obtains model with less than 3 points accuracy degradation .
LLM-QAT: Data-Free Quantization Aware Training for Large Language Models (2024.findings-acl)

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Challenge: Several post-training quantization methods have been shown to perform well down to 8-bits.
Approach: They propose a data-free distillation method that leverages generations produced by the pre-trained model to quantize any generative model independent of its training data.
Outcome: The proposed method outperforms SoTA PTQ and LLaMA models at low bit precision.
PTQ1.61: Push the Real Limit of Extremely Low-Bit Post-Training Quantization Methods for Large Language Models (2025.acl-long)

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Challenge: Existing methods for sub 2-bit quantization introduce an extra 1-bit or more per weight.
Approach: They propose a sub 2-bit post-training quantization method that enables weight quantization to 1.61-bit for the first time.
Outcome: The proposed method reduces the upper bound of quantization error to 1.61-bit for the first time.
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.
“Give Me BF16 or Give Me Death”? Accuracy-Performance Trade-Offs in LLM Quantization (2025.acl-long)

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Challenge: despite popularity of large language model quantization, there are significant accuracy-performance trade-offs associated with quantization formats.
Approach: They evaluate popular quantization formats across academic benchmarks and real-world tasks . they also examine the difference in text generated by quantized models versus their uncompressed counterparts .
Outcome: The proposed format is lossless across all model scales and incurs low accuracy degradation when properly tuned.

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