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This paper investigates the problem of activity detection and channel estimation in cooperative multi-cell massive access systems with temporally correlated activity, where all access points (APs) are connected to a central unit via…

信号处理 · 电气工程与系统科学 2023-04-20 Weifeng Zhu , Meixia Tao , Xiaojun Yuan , Fan Xu , Yunfeng Guan

We develop a belief space planning (BSP) approach that advances the state of the art by incorporating reasoning about data association (DA) within planning, while considering additional sources of uncertainty. Existing BSP approaches…

机器人学 · 计算机科学 2016-06-17 Shashank Pathak , Antony Thomas , Asaf Feniger , Vadim Indelman

Coordinate-based meta-analysis combines evidence from a collection of Neuroimaging studies to estimate brain activation. In such analyses, a key practical challenge is to find a computationally efficient approach with good statistical…

Activation-alignment measures such as Representational Similarity Analysis (RSA), Canonical Correlation Analysis (CCA), and Centered Kernel Alignment (CKA) are widely used to compare biological and artificial neural representations. Recent…

机器学习 · 计算机科学 2026-05-08 Amirhossein Yavari , Farnaz Zamani Esfahlani

Simulation is a well established what-if scenario analysis tool in Operational Research (OR). While traditionally Discrete Event Simulation (DES) and System Dynamics Simulation (SDS) are the predominant simulation techniques in OR, a new…

计算工程、金融与科学 · 计算机科学 2013-07-04 Mazlina Abdul Majid , Peer-Olaf Siebers , Uwe Aickelin

How can we tell whether two neural networks utilize the same internal processes for a particular computation? This question is pertinent for multiple subfields of neuroscience and machine learning, including neuroAI, mechanistic…

神经元与认知 · 定量生物学 2023-10-31 Mitchell Ostrow , Adam Eisen , Leo Kozachkov , Ila Fiete

Active search refers to the problem of efficiently locating targets in an unknown environment by actively making data-collection decisions, and has many applications including detecting gas leaks, radiation sources or human survivors of…

机器学习 · 计算机科学 2020-06-29 Ramina Ghods , Arundhati Banerjee , Jeff Schneider

Scientists and engineers rely on accurate mathematical models to quantify the objects of their studies, which are often high-dimensional. Unfortunately, high-dimensional models are inherently difficult, i.e. when observations are sparse or…

机器学习 · 计算机科学 2018-02-13 Robert A. Bridges , Chris Felder , Chelsey Hoff

This paper studies the subspace segmentation problem. Given a set of data points drawn from a union of subspaces, the goal is to partition them into their underlying subspaces they were drawn from. The spectral clustering method is used as…

计算机视觉与模式识别 · 计算机科学 2015-01-20 Canyi Lu , Jiashi Feng , Zhouchen Lin , Shuicheng Yan

Sensory inference under conditions of uncertainty is a major problem in both machine learning and computational neuroscience. An important but poorly understood aspect of sensory processing is the role of active sensing. Here, we present a…

人工智能 · 计算机科学 2014-08-12 Sheeraz Ahmad , Angela Yu

Sensory inference under conditions of uncertainty is a major problem in both machine learning and computational neuroscience. An important but poorly understood aspect of sensory processing is the role of active sensing. Here, we present a…

人工智能 · 计算机科学 2013-05-30 Sheeraz Ahmad , Angela J. Yu

An inexact accelerated stochastic Alternating Direction Method of Multipliers (AS-ADMM) scheme is developed for solving structured separable convex optimization problems with linear constraints. The objective function is the sum of a…

最优化与控制 · 数学 2020-10-27 Jianchao Bai , William W. Hager , Hongchao Zhang

We propose a multifidelity dimension reduction method to identify a low-dimensional structure present in many engineering models. The structure of interest arises when functions vary primarily on a low-dimensional subspace of the…

数值分析 · 数学 2020-01-08 Rémi Lam , Olivier Zahm , Youssef Marzouk , Karen Willcox

Similarity measures are widely used to interpret the representational geometries used by neural networks to solve tasks. Yet, because existing methods compare the extrinsic geometry of representations in state space, rather than their…

机器学习 · 计算机科学 2026-04-03 N Alex Cayco-Gajic , Arthur Pellegrino

Forecasting 3D human motion is an important embodiment of fine-grained understanding and cognition of human behavior by artificial agents. Current approaches excessively rely on implicit network modeling of spatiotemporal relationships and…

计算机视觉与模式识别 · 计算机科学 2025-11-19 Juncheng Hu , Zijian Zhang , Zeyu Wang , Guoyu Wang , Yingji Li , Kedi Lyu

Model merging aims to cheaply combine individual task-specific models into a single multitask model. In this work, we view past merging methods as leveraging different notions of a ''task parameter subspace'' in which models are matched…

机器学习 · 计算机科学 2024-04-16 Derek Tam , Mohit Bansal , Colin Raffel

The linear model uses the space defined by the input to project the target or desired signal and find the optimal set of model parameters. When the problem is nonlinear, the adaption requires nonlinear models for good performance, but it…

机器学习 · 计算机科学 2018-02-05 Zhengda Qin , Badong Chen , Nanning Zheng , Jose C. Principe

Learning to predict multiple attributes of a pedestrian is a multi-task learning problem. To share feature representation between two individual task networks, conventional methods like Cross-Stitch and Sluice network learn a linear…

计算机视觉与模式识别 · 计算机科学 2020-04-08 Haitian Zeng , Haizhou Ai , Zijie Zhuang , Long Chen

Nowadays, cross-modal retrieval plays an indispensable role to flexibly find information across different modalities of data. Effectively measuring the similarity between different modalities of data is the key of cross-modal retrieval.…

计算机视觉与模式识别 · 计算机科学 2017-08-17 Yuxin Peng , Jinwei Qi , Yuxin Yuan

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