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Diffusion policies, widely adopted in decision-making scenarios such as robotics, gaming and autonomous driving, are capable of learning diverse skills from demonstration data due to their high representation power. However, the sub-optimal…

机器学习 · 计算机科学 2025-09-30 Ningyuan Yang , Jiaxuan Gao , Feng Gao , Yi Wu , Chao Yu

A quad-pixel (QP) sensor is increasingly integrated into commercial mobile cameras. The QP sensor has a unit of 2$\times$2 four photodiodes under a single microlens, generating multi-directional phase shifting when out-focus blurs occur.…

计算机视觉与模式识别 · 计算机科学 2024-09-04 Zhuofeng Wu , Doehyung Lee , Zihua Liu , Kazunori Yoshizaki , Yusuke Monno , Masatoshi Okutomi

Adiabatic following has been an widely-employed technique for achieving near-complete population transfer in a two-level quantum mechanical system. The theoretical basis, however, could be generalized to a broad class of systems exhibiting…

量子物理 · 物理学 2021-07-20 Shailja Sharma , Abhishek Mondal , Ritwick Das

In order to solve the problems of waveform distortion and signal delay by many physical and electrical systems with multi-pole linear low-pass transfer characteristics, a simple digital-signal-processing (DSP)-based method of real-time…

仪器与探测器 · 物理学 2017-09-15 Jhinhwan Lee

In this Letter we analyze the benefit of digital compensation of fiber nonlinearity, where the digital signal processing is divided between the transmitter and receiver. The application of the Gaussian noise model indicates that, where…

We present a latent diffusion-based differentiable inversion method (LD-DIM) for PDE-constrained inverse problems involving high-dimensional spatially distributed coefficients. LD-DIM couples a pretrained latent diffusion prior with an…

数值分析 · 数学 2025-12-30 Zihan Lin , QiZhi He

In this work, we consider the problem of reduced latency of low-density parity-check (LDPC) codes with iterative detection and decoding (IDD) receiver in multiuser multiple-antenna systems. The proposed knowledge-aided IDD (KA-IDD) system…

信息论 · 计算机科学 2018-02-19 P. Li , R. C. de Lamare , J. Liu

By exploiting a causality property of the nonlinear Fourier transform, a novel decision-feedback detection strategy for nonlinear frequency-division multiplexing (NFDM) systems is introduced. The performance of the proposed strategy is…

信息论 · 计算机科学 2018-04-30 Stella Civelli , Enrico Forestieri , Marco Secondini

Prediction of late reverberation component using multi-channel linear prediction (MCLP) in short-time Fourier transform (STFT) domain is an effective means to enhance reverberant speech. Traditionally, a speech power spectral density (PSD)…

音频与语音处理 · 电气工程与系统科学 2018-12-05 Srikanth Raj Chetupalli , Thippur V. Sreenivas

Dynamic mode decomposition (DMD) is a powerful data-driven technique for construction of reduced-order models of complex dynamical systems. Multiple numerical tests have demonstrated the accuracy and efficiency of DMD, but mostly for…

数值分析 · 数学 2021-07-28 Hannah Lu , Daniel M. Tartakovsky

In this paper, we experimentally and theoretically show the improvement in noise characteristics in a distributed Raman amplifier (DRA) system for wavelength division multiplexing (WDM) transmission, utilizing our proposed pumping…

光学 · 物理学 2025-09-03 Hiroto Kawakami , Kohei Saito , Akira Masuda , Shuto Yamamot , Etsushi Yamazaki

Recently Diffusion-based Purification (DiffPure) has been recognized as an effective defense method against adversarial examples. However, we find DiffPure which directly employs the original pre-trained diffusion models for adversarial…

机器学习 · 计算机科学 2025-03-20 Xiao Li , Wenxuan Sun , Huanran Chen , Qiongxiu Li , Yining Liu , Yingzhe He , Jie Shi , Xiaolin Hu

Generative AI has received significant attention among a spectrum of diverse industrial and academic domains, thanks to the magnificent results achieved from deep generative models such as generative pre-trained transformers (GPT) and…

信息论 · 计算机科学 2023-10-06 Mehdi Letafati , Samad Ali , Matti Latva-aho

Magnetic-field and microwave-frequency modulated DNP experiments have been shown to yield improved enhancements over conventional DNP techniques, and even to shorten polarization build-up times. The resulting increase in signal-to-noise…

仪器与探测器 · 物理学 2015-12-23 Mallory L. Guy , Lihuang Zhu , Chandrasekhar Ramanathan

Transformer-based pretrained language models (PLMs) have achieved great success in modern NLP. An important advantage of PLMs is good out-of-distribution (OOD) robustness. Recently, diffusion models have attracted a lot of work to apply…

计算与语言 · 计算机科学 2023-07-27 Huazheng Wang , Daixuan Cheng , Haifeng Sun , Jingyu Wang , Qi Qi , Jianxin Liao , Jing Wang , Cong Liu

Noncontiguous transmission schemes combined with high power-efficiency requirements pose big challenges for radio transmitter and power amplifier (PA) design and implementation. Due to the nonlinear nature of the PA, severe unwanted…

信息论 · 计算机科学 2016-11-23 Mahmoud Abdelaziz , Lauri Anttila , Chance Tarver , Kaipeng Li , Joseph R. Cavallaro , Mikko Valkama

Diffusion Probabilistic Models (DPMs) are powerful generative models that have achieved unparalleled success in a number of generative tasks. In this work, we aim to build inductive biases into the training and sampling of diffusion models…

机器学习 · 计算机科学 2025-03-14 Thomas Jiralerspong , Berton Earnshaw , Jason Hartford , Yoshua Bengio , Luca Scimeca

This paper presents a distributed learning model predictive control (DLMPC) scheme for distributed linear time invariant systems with coupled dynamics and state constraints. The proposed solution method is based on an online distributed…

系统与控制 · 电气工程与系统科学 2020-06-25 Yvonne R. Stürz , Edward L. Zhu , Ugo Rosolia , Karl H. Johansson , Francesco Borrelli

We propose two 8-dimensional (8D) modulation formats (8D-2048PRS-T1 and 8D-2048PRS-T2) with a spectral efficiency of 5.5 bit/4D-sym, where the 8 dimensions are obtained from two time slots and two polarizations. Both formats provide a…

信号处理 · 电气工程与系统科学 2019-09-30 Bin Chen , Chigo Okonkwo , Hartmut Hafermann , Alex Alvarado

Memory-efficient backpropagation (MeBP) has enabled first-order fine-tuning of large language models (LLMs) on mobile devices with less than 1GB memory. However, MeBP requires backward computation through all transformer layers at every…

机器学习 · 计算机科学 2026-02-16 Juneyoung Park , Eunbeen Yoon , Seongwan Kim. Jaeho Lee
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