Data-Free Quantization via Mixed-Precision Compensation without Fine-Tuning
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Abstract (arXiv)
Neural network quantization is a very promising solution in the field of model compression, but its resulting accuracy highly depends on a training/fine-tuning process and requires the original data. This not only brings heavy computation and time costs but also is not conducive to privacy and sensitive information protection. Therefore, a few recent works are starting to focus on data-free quantization. However, data-free quantization does not perform well while dealing with ultra-low precision quantization. Although researchers utilize generative methods of synthetic data to address this problem partially, data synthesis needs to take a lot of computation and time. In this paper, we propose a data-free mixed-precision compensation (DF-MPC) method to recover the performance of an ultra-low precision quantized model without any data and fine-tuning process. By assuming the quantized error caused by a low-precision quantized layer can be restored via the reconstruction of a high-precision quantized layer, we mathematically formulate the reconstruction loss between the pre-trained full-precision model and its layer-wise mixed-precision quantized model. Based on our formulation, we theoretically deduce the closed-form solution by minimizing the reconstruction loss of the feature maps. Since DF-MPC does not require any original/synthetic data, it is a more efficient method to approximate the full-precision model. Experimentally, our DF-MPC is able to achieve higher accuracy for an ultra-low precision quantized model compared to the recent methods without any data and fine-tuning process.
Key facts. Cited by 9 papers in the map (data through 7 Oct 2026). Builds on 34 of its 43 references that are in the map. First posted on arXiv 2 Jul 2023.
Builds on
34 of 43 references.
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22 more
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Built on by
Citing papers per year: 2023: 2; 2024: 3; 2025: 3; 2026: 1.
9 papers.
- 2024A Survey on Transformer Compressioncited by 44
- 2023Unified Data-Free Compression: Pruning and Quantization without Fine-Tuningcited by 22
- 2023Towards Trustworthy Dataset Distillationcited by 14
- 2024Timestep-Aware Correction for Quantized Diffusion Modelscited by 13
- 2025Low-bit Model Quantization for Deep Neural Networks: A Surveycited by 11
- 2025ConMamba: Contrastive Vision Mamba for Plant Disease Detectioncited by 2
- 2024AutoDFP: Automatic Data-Free Pruning via Channel Similarity Reconstructioncited by 1
- 2025Hyperbolic Binary Neural Networkcited by 0
- 2026Theoretical Guarantees for One-Shot Magnitude Pruning and Compute-Adaptive Early Exitcited by 0
- 2026Theoretical Guarantees for One-Shot Magnitude Pruning and Compute-Adaptive Early Exit11 Sep 2026
- 2025ConMamba: Contrastive Vision Mamba for Plant Disease Detection3 Jun 2025
- 2025Low-bit Model Quantization for Deep Neural Networks: A Survey8 May 2025
- 2025Hyperbolic Binary Neural Network7 Jan 2025
- 2024Timestep-Aware Correction for Quantized Diffusion Models4 Jul 2024
- 2024AutoDFP: Automatic Data-Free Pruning via Channel Similarity Reconstruction13 Mar 2024
- 2024A Survey on Transformer Compression5 Feb 2024
- 2023Unified Data-Free Compression: Pruning and Quantization without Fine-Tuning14 Aug 2023
- 2023Towards Trustworthy Dataset Distillation18 Jul 2023