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In this study we consider rateless coding over discrete memoryless channels (DMC) with feedback. Unlike traditional fixed-rate codes, in rateless codes each codeword is infinitely long, and the decoding time depends on the confidence level…

信息论 · 计算机科学 2012-01-30 Navot Blits

Changing the encoding parameters, in particular the video resolution, is a common practice before transcoding. To this end, streaming and broadcast platforms benefit from so-called bitrate ladders to determine the optimal resolution for…

图像与视频处理 · 电气工程与系统科学 2022-07-26 Fatemeh Nasiri , Wassim Hamidouche , Luce Morin , Nicolas Dholland , Jean-Yves Aubié

Quantizing deep neural networks is an effective method for reducing memory consumption and improving inference speed, and is thus useful for implementation in resource-constrained devices. However, it is still hard for extremely low-bit…

计算机视觉与模式识别 · 计算机科学 2021-11-03 Kohei Yamamoto

Diffusion models have achieved great success in image synthesis through iterative noise estimation using deep neural networks. However, the slow inference, high memory consumption, and computation intensity of the noise estimation model…

计算机视觉与模式识别 · 计算机科学 2023-06-09 Xiuyu Li , Yijiang Liu , Long Lian , Huanrui Yang , Zhen Dong , Daniel Kang , Shanghang Zhang , Kurt Keutzer

Ridgeless regression has garnered attention among researchers, particularly in light of the ``Benign Overfitting'' phenomenon, where models interpolating noisy samples demonstrate robust generalization. However, kernel ridgeless regression…

机器学习 · 计算机科学 2024-06-04 Fan He , Mingzhen He , Lei Shi , Xiaolin Huang , Johan A. K. Suykens

The use of advanced quantum neuron models for pattern recognition applications requires fault tolerance. Therefore, it is not yet possible to test such models on a large scale in currently available quantum processors. As an alternative, we…

量子物理 · 物理学 2022-02-18 London A. Cavaletto , Luca Candelori , Alex Matos-Abiague

Penalized quantile regression (QR) is widely used for studying the relationship between a response variable and a set of predictors under data heterogeneity in high-dimensional settings. Compared to penalized least squares, scalable…

统计方法学 · 统计学 2022-05-06 Rebeka Man , Xiaoou Pan , Kean Ming Tan , Wen-Xin Zhou

One of the most significant bottleneck in training large scale machine learning models on parameter server (PS) is the communication overhead, because it needs to frequently exchange the model gradients between the workers and servers…

机器学习 · 计算机科学 2018-04-25 Guoxin Cui , Jun Xu , Wei Zeng , Yanyan Lan , Jiafeng Guo , Xueqi Cheng

Mixed Precision Quantization (MPQ) has become an essential technique for optimizing neural network by determining the optimal bitwidth per layer. Existing MPQ methods, however, face a major hurdle: they require a computationally expensive…

计算机视觉与模式识别 · 计算机科学 2025-05-20 Lianbo Ma , Jianlun Ma , Yuee Zhou , Guoyang Xie , Qiang He , Zhichao Lu

Recent advances in neural networks have led to significant computational and memory demands, spurring interest in one-bit weight compression to enable efficient inference on resource-constrained devices. However, the theoretical…

机器学习 · 计算机科学 2025-10-21 Danil Akhtiamov , Reza Ghane , Babak Hassibi

Current per-shot encoding schemes aim to improve the compression efficiency by shot-level optimization. It splits a source video sequence into shots and imposes optimal sets of encoding parameters to each shot. Per-shot encoding achieved…

图像与视频处理 · 电气工程与系统科学 2021-12-24 Hongcheng Zhong , Jun Xu , Chen Zhu , Donghui Feng , Li Song

Video compression is a central feature of the modern internet powering technologies from social media to video conferencing. While video compression continues to mature, for many compression settings, quality loss is still noticeable. These…

图像与视频处理 · 电气工程与系统科学 2023-10-31 Max Ehrlich , Jon Barker , Namitha Padmanabhan , Larry Davis , Andrew Tao , Bryan Catanzaro , Abhinav Shrivastava

Sharpening is a widely adopted video enhancement technique. However, uniform sharpening intensity ignores texture variations, degrading video quality. Sharpening also increases bitrate, and there's a lack of techniques to optimally allocate…

计算机视觉与模式识别 · 计算机科学 2025-08-13 Yingxue Pang , Shijie Zhao , Mengxi Guo , Junlin Li , Li Zhang

This paper uses the reconstruction-computation-quantization (RCQ) paradigm to decode low-density parity-check (LDPC) codes. RCQ facilitates dynamic non-uniform quantization to achieve good frame error rate (FER) performance with very low…

信号处理 · 电气工程与系统科学 2022-02-10 Linfang Wang , Caleb Terrill , Maximilian Stark , Zongwang Li , Sean Chen , Chester Hulse , Calvin Kuo , Richard Wesel , Gerhard Bauch , Rekha Pitchumani

Principal component regression (PCR) is a useful method for regularizing linear regression. Although conceptually simple, straightforward implementations of PCR have high computational costs and so are inappropriate when learning with large…

数值分析 · 数学 2019-03-08 Liron Mor-Yosef , Haim Avron

The widespread usage of point clouds (PC) for immersive visual applications has resulted in the use of very heterogeneous receiving conditions and devices, notably in terms of network, hardware, and display capabilities. In this scenario,…

机器学习 · 计算机科学 2024-07-10 Daniele Mari , André F. R. Guarda , Nuno M. M. Rodrigues , Simone Milani , Fernando Pereira

Common state-of-the-art video codecs are optimized to deliver a low bitrate by providing a certain quality for the final human observer, which is achieved by rate-distortion optimization (RDO). But, with the steady improvement of neural…

图像与视频处理 · 电气工程与系统科学 2022-03-14 Kristian Fischer , Fabian Brand , Christian Herglotz , André Kaup

The exponentially large discrete search space in mixed-precision quantization (MPQ) makes it hard to determine the optimal bit-width for each layer. Previous works usually resort to iterative search methods on the training set, which…

机器学习 · 计算机科学 2023-03-07 Chen Tang , Kai Ouyang , Zhi Wang , Yifei Zhu , Yaowei Wang , Wen Ji , Wenwu Zhu

Computational image reconstruction algorithms generally produce a single image without any measure of uncertainty or confidence. Regularized Maximum Likelihood (RML) and feed-forward deep learning approaches for inverse problems typically…

机器学习 · 计算机科学 2020-12-18 He Sun , Katherine L. Bouman

Recently, deep learning-based image compression has made signifcant progresses, and has achieved better ratedistortion (R-D) performance than the latest traditional method, H.266/VVC, in both subjective metric and the more challenging…

图像与视频处理 · 电气工程与系统科学 2022-06-23 Haisheng Fu , Feng Liang , Jie Liang , Binglin Li , Guohe Zhang , Jingning Han