HMQ: Hardware Friendly Mixed Precision Quantization Block for CNNs
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Abstract (arXiv)
Recent work in network quantization produced state-of-the-art results using mixed precision quantization. An imperative requirement for many efficient edge device hardware implementations is that their quantizers are uniform and with power-of-two thresholds. In this work, we introduce the Hardware Friendly Mixed Precision Quantization Block (HMQ) in order to meet this requirement. The HMQ is a mixed precision quantization block that repurposes the Gumbel-Softmax estimator into a smooth estimator of a pair of quantization parameters, namely, bit-width and threshold. HMQs use this to search over a finite space of quantization schemes. Empirically, we apply HMQs to quantize classification models trained on CIFAR10 and ImageNet. For ImageNet, we quantize four different architectures and show that, in spite of the added restrictions to our quantization scheme, we achieve competitive and, in some cases, state-of-the-art results.
Key facts. Cited by 43 papers in the map (data through 7 Oct 2026). First posted on arXiv 20 Jul 2020.
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Citing papers per year: 2021: 7; 2022: 9; 2023: 14; 2024: 6; 2025: 6; 2026: 1.
43 papers.
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- 2021A Survey of Quantization Methods for Efficient Neural Network Inferencecited by 798
- 2021Implicit Neural Representations for Image Compressioncited by 161
- 2022A Comprehensive Survey on Model Quantization for Deep Neural Networks in Image Classificationcited by 64
- 2022Mixed-Precision Neural Network Quantization via Learned Layer-wise Importancecited by 53
- 2022Better Teacher Better Student: Dynamic Prior Knowledge for Knowledge Distillationcited by 41
- 2022SDQ: Stochastic Differentiable Quantization with Mixed Precisioncited by 27
- 2022F8Net: Fixed-Point 8-bit Only Multiplication for Network Quantizationcited by 26
- 2022CADyQ: Content-Aware Dynamic Quantization for Image Super-Resolutioncited by 26
- 2023EMQ: Evolving Training-free Proxies for Automated Mixed Precision Quantizationcited by 22
- 2021Differentiable Dynamic Quantization with Mixed Precision and Adaptive Resolutioncited by 19
- 2024Retraining-free Model Quantization via One-Shot Weight-Coupling Learningcited by 13
- 2024SketchINR: A First Look into Sketches as Implicit Neural Representationscited by 13
31 more
- 2021Generalizable Mixed-Precision Quantization via Attribution Rank Preservationcited by 11
- 2023Mixed-Precision Quantization for Federated Learning on Resource-Constrained Heterogeneous Devicescited by 11
- 2024Channel-Wise Mixed-Precision Quantization for Large Language Modelscited by 11
- 2025Low-bit Model Quantization for Deep Neural Networks: A Surveycited by 11
- 2023EQ-Net: Elastic Quantization Neural Networkscited by 10
- 2021HPTQ: Hardware-Friendly Post Training Quantizationcited by 9
- 2023Revisiting Block-based Quantisation: What is Important for Sub-8-bit LLM Inference?cited by 8
- 2022Mixed-Precision Neural Networks: A Surveycited by 7
- 2023MetaMix: Meta-state Precision Searcher for Mixed-precision Activation Quantizationcited by 7
- 2021FAT: Learning Low-Bitwidth Parametric Representation via Frequency-Aware Transformationcited by 6
- 2021Neuroevolution-Enhanced Multi-Objective Optimization for Mixed-Precision Quantizationcited by 6
- 2023SEAM: Searching Transferable Mixed-Precision Quantization Policy through Large Margin Regularizationcited by 6
- 2023FemtoDet: An Object Detection Baseline for Energy Versus Performance Tradeoffscited by 5
- 2023Towards Efficient In-memory Computing Hardware for Quantized Neural Networks: State-of-the-art, Open Challenges and Perspectivescited by 5
- 2023EPTQ: Enhanced Post-Training Quantization via Hessian-guided Network-wise Optimizationcited by 5
- 2023QBitOpt: Fast and Accurate Bitwidth Reallocation during Trainingcited by 4
- 2023Overcoming Distribution Mismatch in Quantizing Image Super-Resolution Networkscited by 4
- 2025Learning from Loss Landscape: Generalizable Mixed-Precision Quantization via Adaptive Sharpness-Aware Gradient Aligningcited by 3
- 2024Data Generation for Hardware-Friendly Post-Training Quantizationcited by 2
- 2026dMX: Differentiable Mixed-Precision Assignment for Low-Precision Floating-Point Formatscited by 2
- 2023Learning Accurate Performance Predictors for Ultrafast Automated Model Compressioncited by 1
- 2023On Calibration of Modern Quantized Efficient Neural Networkscited by 1
- 2024CARIn: Constraint-Aware and Responsive Inference on Heterogeneous Devices for Single- and Multi-DNN Workloadscited by 1
- 2025MLoRQ: Bridging Low-Rank and Quantization for Transformer Compressioncited by 1
- 2025Where and How to Enhance: Discovering Bit-Width Contribution for Mixed Precision Quantizationcited by 1
- 2025FlexiQ: Adaptive Mixed-Precision Quantization for Latency/Accuracy Trade-Offs in Deep Neural Networkscited by 1
- 2022A Closer Look at Hardware-Friendly Weight Quantizationcited by 0
- 2022CSMPQ:Class Separability Based Mixed-Precision Quantizationcited by 0
- 2023Efficient Online Processing with Deep Neural Networkscited by 0
- 2024Efficient Neural Compression with Inference-time Decodingcited by 0
- 2025CHORD: Customizing Hybrid-precision On-device Model for Sequential Recommendation with Device-cloud Collaborationcited by 0
- 2026dMX: Differentiable Mixed-Precision Assignment for Low-Precision Floating-Point Formats2 Jun 2026
- 2025CHORD: Customizing Hybrid-precision On-device Model for Sequential Recommendation with Device-cloud Collaboration3 Oct 2025
- 2025FlexiQ: Adaptive Mixed-Precision Quantization for Latency/Accuracy Trade-Offs in Deep Neural Networks3 Oct 2025
- 2025Where and How to Enhance: Discovering Bit-Width Contribution for Mixed Precision Quantization5 Aug 2025
- 2025MLoRQ: Bridging Low-Rank and Quantization for Transformer Compression13 Jul 2025
- 2025Low-bit Model Quantization for Deep Neural Networks: A Survey8 May 2025
- 2025Learning from Loss Landscape: Generalizable Mixed-Precision Quantization via Adaptive Sharpness-Aware Gradient Aligning8 May 2025
- 2024Data Generation for Hardware-Friendly Post-Training Quantization29 Oct 2024
- 2024Channel-Wise Mixed-Precision Quantization for Large Language Models16 Oct 2024
- 2024CARIn: Constraint-Aware and Responsive Inference on Heterogeneous Devices for Single- and Multi-DNN Workloads2 Sep 2024
- 2024Efficient Neural Compression with Inference-time Decoding10 Jun 2024
- 2024SketchINR: A First Look into Sketches as Implicit Neural Representations14 Mar 2024
31 more
- 2024Retraining-free Model Quantization via One-Shot Weight-Coupling Learning3 Jan 2024
- 2023Mixed-Precision Quantization for Federated Learning on Resource-Constrained Heterogeneous Devices29 Nov 2023
- 2023MetaMix: Meta-state Precision Searcher for Mixed-precision Activation Quantization12 Nov 2023
- 2023Revisiting Block-based Quantisation: What is Important for Sub-8-bit LLM Inference?8 Oct 2023
- 2023On Calibration of Modern Quantized Efficient Neural Networks25 Sep 2023
- 2023EPTQ: Enhanced Post-Training Quantization via Hessian-guided Network-wise Optimization20 Sep 2023
- 2023EQ-Net: Elastic Quantization Neural Networks15 Aug 2023
- 2023Overcoming Distribution Mismatch in Quantizing Image Super-Resolution Networks25 Jul 2023
- 2023EMQ: Evolving Training-free Proxies for Automated Mixed Precision Quantization20 Jul 2023
- 2023QBitOpt: Fast and Accurate Bitwidth Reallocation during Training10 Jul 2023
- 2023Towards Efficient In-memory Computing Hardware for Quantized Neural Networks: State-of-the-art, Open Challenges and Perspectives8 Jul 2023
- 2023Efficient Online Processing with Deep Neural Networks23 Jun 2023
- 2023Learning Accurate Performance Predictors for Ultrafast Automated Model Compression13 Apr 2023
- 2023SEAM: Searching Transferable Mixed-Precision Quantization Policy through Large Margin Regularization14 Feb 2023
- 2023FemtoDet: An Object Detection Baseline for Energy Versus Performance Tradeoffs17 Jan 2023
- 2022CSMPQ:Class Separability Based Mixed-Precision Quantization20 Dec 2022
- 2022A Closer Look at Hardware-Friendly Weight Quantization7 Oct 2022
- 2022Mixed-Precision Neural Networks: A Survey11 Aug 2022
- 2022CADyQ: Content-Aware Dynamic Quantization for Image Super-Resolution21 Jul 2022
- 2022Better Teacher Better Student: Dynamic Prior Knowledge for Knowledge Distillation13 Jun 2022
- 2022SDQ: Stochastic Differentiable Quantization with Mixed Precision9 Jun 2022
- 2022A Comprehensive Survey on Model Quantization for Deep Neural Networks in Image Classification14 May 2022
- 2022Mixed-Precision Neural Network Quantization via Learned Layer-wise Importance16 Mar 2022
- 2022F8Net: Fixed-Point 8-bit Only Multiplication for Network Quantization10 Feb 2022
- 2021Implicit Neural Representations for Image Compression8 Dec 2021
- 2021HPTQ: Hardware-Friendly Post Training Quantization19 Sep 2021
- 2021Generalizable Mixed-Precision Quantization via Attribution Rank Preservation5 Aug 2021
- 2021Neuroevolution-Enhanced Multi-Objective Optimization for Mixed-Precision Quantization14 Jun 2021
- 2021Differentiable Dynamic Quantization with Mixed Precision and Adaptive Resolution4 Jun 2021
- 2021A Survey of Quantization Methods for Efficient Neural Network Inference25 Mar 2021
- 2021FAT: Learning Low-Bitwidth Parametric Representation via Frequency-Aware Transformation15 Feb 2021
- 2021A Survey of Quantization Methods for Efficient Neural Network Inferencecited by 798
- 2021Implicit Neural Representations for Image Compressioncited by 161
- 2022A Comprehensive Survey on Model Quantization for Deep Neural Networks in Image Classificationcited by 64
- 2022Mixed-Precision Neural Network Quantization via Learned Layer-wise Importancecited by 53
- 2022Better Teacher Better Student: Dynamic Prior Knowledge for Knowledge Distillationcited by 41
- 2022SDQ: Stochastic Differentiable Quantization with Mixed Precisioncited by 27
- 2022F8Net: Fixed-Point 8-bit Only Multiplication for Network Quantizationcited by 26
- 2022CADyQ: Content-Aware Dynamic Quantization for Image Super-Resolutioncited by 26
- 2023EMQ: Evolving Training-free Proxies for Automated Mixed Precision Quantizationcited by 22
- 2021Differentiable Dynamic Quantization with Mixed Precision and Adaptive Resolutioncited by 19
- 2024Retraining-free Model Quantization via One-Shot Weight-Coupling Learningcited by 13
- 2024SketchINR: A First Look into Sketches as Implicit Neural Representationscited by 13
12 most cited of 43 All 43 (JSON)
- 2026dMX: Differentiable Mixed-Precision Assignment for Low-Precision Floating-Point Formats2 Jun 2026
- 2025CHORD: Customizing Hybrid-precision On-device Model for Sequential Recommendation with Device-cloud Collaboration3 Oct 2025
- 2025FlexiQ: Adaptive Mixed-Precision Quantization for Latency/Accuracy Trade-Offs in Deep Neural Networks3 Oct 2025
- 2025Where and How to Enhance: Discovering Bit-Width Contribution for Mixed Precision Quantization5 Aug 2025
- 2025MLoRQ: Bridging Low-Rank and Quantization for Transformer Compression13 Jul 2025
- 2025Low-bit Model Quantization for Deep Neural Networks: A Survey8 May 2025
- 2025Learning from Loss Landscape: Generalizable Mixed-Precision Quantization via Adaptive Sharpness-Aware Gradient Aligning8 May 2025
- 2024Data Generation for Hardware-Friendly Post-Training Quantization29 Oct 2024
- 2024Channel-Wise Mixed-Precision Quantization for Large Language Models16 Oct 2024
- 2024CARIn: Constraint-Aware and Responsive Inference on Heterogeneous Devices for Single- and Multi-DNN Workloads2 Sep 2024
- 2024Efficient Neural Compression with Inference-time Decoding10 Jun 2024
- 2024SketchINR: A First Look into Sketches as Implicit Neural Representations14 Mar 2024
12 newest of 43 All 43 (JSON)