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Autoregressive video diffusion models have emerged as a scalable paradigm for long video generation. However, they often suffer from severe extrapolation failure, where rapid error accumulation leads to significant temporal degradation when…

计算机视觉与模式识别 · 计算机科学 2026-03-16 Jia Li , Xiaomeng Fu , Xurui Peng , Weifeng Chen , Youwei Zheng , Tianyu Zhao , Jiexi Wang , Fangmin Chen , Xing Wang , Hayden Kwok-Hay So

High data rates require vast bandwidths, that can be found in the sub-THz band, and high sampling frequencies, which are predicted to lead to a problematically high analog-to-digital converter (ADC) power consumption. It was proposed to use…

信号处理 · 电气工程与系统科学 2023-09-13 Florian Gast , Stephan Zeitz , Meik Dörpinghaus , Gerhard P. Fettweis

State-of-the-art attribution methods rely on adversarial sample generation that applies an all-pass filter across the frequency spectrum, discarding fine-grained high-frequency information that is demonstrably important for accurate feature…

机器学习 · 计算机科学 2026-05-11 Ali Yavari , Alireza Mohamadi , Elham Beydaghi , Philipp Seeböck , Rainer A. Leitgeb

Prior work on probing neural networks primarily relies on input-space analysis or parameter perturbation, both of which face fundamental limitations in accessing structural information encoded in intermediate representations. We introduce…

机器学习 · 计算机科学 2026-02-04 Tao Ren , Xiaoyu Luo , Qiongxiu Li

Precise, generalizable subject-agnostic seizure prediction (SASP) remains a fundamental challenge due to the intrinsic complexity and significant spectral variability of electrophysiological signals across individuals and recording…

神经元与认知 · 定量生物学 2025-11-06 Ruizhe Zheng , Lingyan Mao , Dingding Han , Tian Luo , Yi Wang , Jing Ding , Yuguo Yu

Convolutional layers with 1-D filters are often used as frontend to encode audio signals. Unlike fixed time-frequency representations, they can adapt to the local characteristics of input data. However, 1-D filters on raw audio are hard to…

声音 · 计算机科学 2024-09-02 Daniel Haider , Felix Perfler , Vincent Lostanlen , Martin Ehler , Peter Balazs

Deterministic neural operators perform well on many PDEs but can struggle with the approximation of high-frequency wave phenomena, where strong input-to-output sensitivity makes operator learning challenging, and spectral bias blurs…

机器学习 · 计算机科学 2026-02-05 Yicheng Zou , Samuel Lanthaler , Hossein Salahshoor

Complex-valued sparse coding is a data representation which employs a dictionary of two-dimensional subspaces, while imposing a sparse, factorial prior on complex amplitudes. When trained on a dataset of natural image patches, it learns…

机器学习 · 计算机科学 2014-02-19 Wiktor Mlynarski

Extremely large aperture arrays (ELAAs) and millimeter-wave (mmWave) technologies are essential for achieving high data rates in future wireless communication systems. To perform precise beamforming, these systems require accurate channel…

信号处理 · 电气工程与系统科学 2026-05-22 Heling Zhang , Xiujun Zhang , Xiaofeng Zhong , Shidong Zhou

Methods are studied to compute the boosting effects produced by the observer motion that modifies and transfers to higher l the isotropic monopole frequency spectrum of the cosmic background. Explicit analytical solutions for spherical…

宇宙学与河外天体物理 · 物理学 2024-01-11 Tiziana Trombetti , Carlo Burigana , Marco Tucci , Luigi Toffolatti

Classical approximation and learning methods are typically optimized for interpolation over a sampled domain {\Omega}, with no guarantees on their behavior in an extrapolation region {\Xi}, where small in-domain errors may amplify. We…

数值分析 · 数学 2026-03-11 Guy Hay , Nir Sharon

This paper studies optimization proxies, machine learning (ML) models trained to efficiently predict optimal solutions for AC Optimal Power Flow (ACOPF) problems. While promising, optimization proxy performance heavily depends on training…

机器学习 · 计算机科学 2025-11-11 Miao Li , Michael Klamkin , Pascal Van Hentenryck , Wenting Li , Russell Bent

Many real-world time series exhibit strong periodic structures arising from physical laws, human routines, or seasonal cycles. However, modern deep forecasting models often fail to capture these recurring patterns due to spectral bias and a…

机器学习 · 计算机科学 2025-08-05 Menglin Kong , Vincent Zhihao Zheng , Lijun Sun

Spectral bias implies an imbalance in training dynamics, whereby high-frequency components may converge substantially more slowly than low-frequency ones. To alleviate this issue, we propose a cross-attention-based architecture that…

数值分析 · 数学 2025-12-23 Xiaodong Feng , Tao Tang , Xiaoliang Wan , Tao Zhou

When quantizing weights and activations to increasingly narrower representations, the cost of additions begins to dominate that of multiplications in multiply-accumulate (MAC) units. Recent studies show that reducing addition costs via…

机器学习 · 计算机科学 2025-08-01 Ian Colbert , Giuseppe Franco , Fabian Grob , Jinjie Zhang , Rayan Saab

A channel with continuous phase modulation and 1-bit ADC with oversampling is considered. Due to oversampling, higher-order modulations yield a higher achievable rate and this work presents a method to approach this with sophisticated…

信息论 · 计算机科学 2019-12-06 Rodrigo R. M. de Alencar , Lukas T. N. Landau , Rodrigo C. de Lamare

While passive acoustic mapping (PAM) has been advanced for monitoring acoustic cavitation activity in focused ultrasound (FUS) therapy, achieving both real-time and high-quality imaging capabilities is still challenging. The angular…

医学物理 · 物理学 2024-12-04 Yi Zeng , Hui Zhu , Jinwei Li , Jianfeng Li , Fei Li , Shukuan Lu , Xiran Cai

Careful parametrization of networking protocols is crucial to maximize the performance of low-power wireless systems and ensure that stringent application requirements can be met. This is a non-trivial task involving thorough…

网络与互联网体系结构 · 计算机科学 2025-02-03 Mohamed Hassaan M. Hydher , Markus Schuss , Olga Saukh , Kay Römer , Carlo Alberto Boano

Recently, arbitrary-scale point cloud upsampling mechanism became increasingly popular due to its efficiency and convenience for practical applications. To achieve this, most previous approaches formulate it as a problem of surface…

计算机视觉与模式识别 · 计算机科学 2024-03-11 Hang Du , Xuejun Yan , Jingjing Wang , Di Xie , Shiliang Pu

Sequential latent-variable models with subject-specific random effects provide a flexible framework for modeling temporally structured data with both local latent dynamics and stable between-subject heterogeneity. In such models,…

统计方法学 · 统计学 2026-04-28 Xingche Guo
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