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The real-space density-functional perturbation theory (DFPT) for the computations of the response properties with respect to the atomic displacement and homogeneous electric field perturbation has been recently developed and implemented…

计算物理 · 物理学 2020-10-28 Honghui Shang , Wanzhen Liang , Yunquan Zhang , Jinlong Yang

AI-generated image detectors suffer significant performance degradation under real-world image corruptions such as JPEG compression, Gaussian blur, and resolution downsampling. We observe that state-of-the-art methods, including B-Free,…

计算机视觉与模式识别 · 计算机科学 2026-05-27 Zongyou Yang , Yinghan Hou , Xiaokun Yang

Long chain-of-thought reasoning (Long CoT) is now fundamental to state-of-the-art LLMs, especially in mathematical reasoning. However, LLM generation is highly sequential, and long CoTs lead to a high latency. We propose to train…

机器学习 · 计算机科学 2026-02-02 Arvind Mahankali , Kaiyue Wen , Tengyu Ma

Analog computing has reemerged as a promising avenue for accelerating deep neural networks (DNNs) due to its potential to overcome the energy efficiency and scalability challenges posed by traditional digital architectures. However,…

新兴技术 · 计算机科学 2024-06-17 Cansu Demirkiran , Lakshmi Nair , Darius Bunandar , Ajay Joshi

Block frames called directional analytic discrete cosine frames (DADCFs) are proposed for sparse image representation. In contrast to conventional overlapped frames, the proposed DADCFs require a reduced amount of 1) computational…

图像与视频处理 · 电气工程与系统科学 2021-12-24 Seisuke Kyochi , Taizo Suzuki , Yuichi Tanaka

Hardware acceleration can revolutionize robotics, enabling new applications by speeding up robot response times while remaining power-efficient. However, the diversity of acceleration options makes it difficult for roboticists to easily…

机器人学 · 计算机科学 2023-07-03 Víctor Mayoral-Vilches , Sabrina M. Neuman , Brian Plancher , Vijay Janapa Reddi

Discrete Cosine Transform (DCT) is very important in image compression. Classical 1-D DCT and 2-D DCT has time complexity O(NlogN) and O(N²logN) respectively. This paper presents a quantum DCT iteration, and constructs a quantum 1-D…

量子物理 · 物理学 2007-05-23 Chao Yang Pang , Zheng Wei Zhou , Guang Can Guo

Deformable image registration (DIR) is a crucial and challenging technique for aligning anatomical structures in medical images and is widely applied in diverse clinical applications. However, existing approaches often struggle to capture…

图像与视频处理 · 电气工程与系统科学 2025-08-26 Shayan Kebriti , Shahabedin Nabavi , Ali Gooya

The Discrete Cosine Transform (DCT) is widely used in lossy image and video compression schemes, e.g., JPEG and MPEG. In this paper, we show that the compression efficiency of the DCT is dependent on the edge directions within a block. In…

多媒体 · 计算机科学 2014-11-18 Rui F. C. Guerreiro , Pedro M. Q. Aguiar

Graph filtering is a fundamental tool in graph signal processing. Polynomial graph filters (PGFs), defined as polynomials of a fundamental graph operator, can be implemented in the vertex domain, and usually have a lower complexity than…

信号处理 · 电气工程与系统科学 2022-05-04 Keng-Shih Lu , Antonio Ortega , Debargha Mukherjee , Yue Chen

In this work, we propose a low-cost rate splitting (RS) technique for a multi-user multiple-input single-output (MISO) system operating in frequency division duplex (FDD) mode. The proposed iterative optimisation algorithm only depends on…

信号处理 · 电气工程与系统科学 2024-11-05 Sadaf Syed , Donia Ben Amor , Michael Joham , Wolfgang Utschick

Accurate medical image segmentation requires both long-range contextual reasoning and precise boundary delineation, a task where existing transformer- and diffusion-based paradigms are frequently bottlenecked by quadratic computational…

计算机视觉与模式识别 · 计算机科学 2026-04-22 Ahmed Marouane Djouama , Abir Belaala , Abdellah Zakaria Sellam , Salah Eddine Bekhouche , Cosimo Distante , Abdenour Hadid

The 3D Discrete Fourier Transform (DFT) is a technique used to solve problems in disparate fields. Nowadays, the commonly adopted implementation of the 3D-DFT is derived from the Fast Fourier Transform (FFT) algorithm. However, evidence…

Automated methods for breast cancer detection have focused on 2D mammography and have largely ignored 3D digital breast tomosynthesis (DBT), which is frequently used in clinical practice. The two key challenges in developing automated…

计算机视觉与模式识别 · 计算机科学 2020-02-28 Yu Zhang , Xiaoqin Wang , Hunter Blanton , Gongbo Liang , Xin Xing , Nathan Jacobs

For single source helical Computed Tomography (CT), both Filtered-Back Projection (FBP) and statistical iterative reconstruction have been investigated. However for dual source CT with flying focal spot (DS-FFS CT), statistical iterative…

图像与视频处理 · 电气工程与系统科学 2022-02-14 Xiao Wang , Robert D. MacDougall , Peng Chen , Charles A. Bouman , Simon K. Warfield

Localization is an essential component for autonomous robots. A well-established localization approach combines ray casting with a particle filter, leading to a computationally expensive algorithm that is difficult to run on…

数据结构与算法 · 计算机科学 2018-03-09 Corey Walsh , Sertac Karaman

In this paper, a fast cell to cell tracking algorithm (FC2CT) is developed, that determines the change in 6D phase space of a particle beam through rf accelerating cavities operated in both Standing and Traveling Wave modes. The performance…

加速器物理 · 物理学 2024-03-18 Matthew Southerby , Robert Apsimon

Recent research has shown that large language models (LLMs) can utilize low-precision floating point (FP) quantization to deliver high efficiency while maintaining original model accuracy. In particular, recent works have shown the…

硬件体系结构 · 计算机科学 2025-06-05 Faraz Tahmasebi , Yian Wang , Benji Y. H. Huang , Hyoukjun Kwon

In this paper we present a new fast and deterministic algorithm for the inverse discrete cosine transform of type II that reconstructs the input vector $\mathbf{x}\in\mathbb{R}^{N}$, $N=2^{J-1}$, with short support of length $m$ from its…

数值分析 · 数学 2020-02-19 Sina Bittens , Gerlind Plonka

Diffusion Transformers rely on static patchify tokenization, assigning the same token budget to smooth backgrounds, detailed object regions, noisy early timesteps, and late-stage refinements. We introduce the Dynamic Chunking Diffusion…

计算机视觉与模式识别 · 计算机科学 2026-05-08 Akash Haridas , Utkarsh Saxena , Parsa Ashrafi Fashi , Mehdi Rezagholizadeh , Vikram Appia , Emad Barsoum