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Nowadays, distributed smart cameras are deployed for a wide set of tasks in several application scenarios, ranging from object recognition, image retrieval, and forensic applications. Due to limited bandwidth in distributed systems,…

计算机视觉与模式识别 · 计算机科学 2017-06-02 Ali Taalimi , Alireza Rahimpour , Liu Liu , Hairong Qi

Non-Gaussian and multimodal distributions are an important part of many recent robust sensor fusion algorithms. In difference to robust cost functions, they are probabilistically founded and have good convergence properties. Since their…

机器人学 · 计算机科学 2020-01-14 Tim Pfeifer , Peter Protzel

Mask-based blind speech separation (BSS) estimates source-wise time-frequency (TF) masks by clustering multichannel observations using spatial information. The directional statistical approach clusters normalized multichannel observations…

音频与语音处理 · 电气工程与系统科学 2026-05-26 Nobutaka Ito

Image restoration has experienced significant advancements due to the development of deep learning. Nevertheless, it encounters challenges related to ill-posed problems, resulting in deviations between single model predictions and…

计算机视觉与模式识别 · 计算机科学 2024-10-31 Shangquan Sun , Wenqi Ren , Zikun Liu , Hyunhee Park , Rui Wang , Xiaochun Cao

In recent years, the accuracy of gaze estimation techniques has gradually improved, but existing methods often rely on large datasets or large models to improve performance, which leads to high demands on computational resources. In terms…

计算机视觉与模式识别 · 计算机科学 2024-12-12 Zhang Cheng , Yanxia Wang , Guoyu Xia

In single-photon light detection and ranging (SP-LiDAR) systems, the histogram distortion due to hardware dead time fundamentally limits the precision of depth estimation. To compensate for the dead time effects, the photon registration…

信号处理 · 电气工程与系统科学 2024-07-04 Weijian Zhang , Hashan K. Weerasooriya , Prateek Chennuri , Stanley H. Chan

We present an iterative overlap estimation technique to augment existing point cloud registration algorithms that can achieve high performance in difficult real-world situations where large pose displacement and non-overlapping geometry…

计算机视觉与模式识别 · 计算机科学 2018-08-08 Ben Eckart , Kihwan Kim , Jan Kautz

A Gaussian measurement error assumption, i.e., an assumption that the data are observed up to Gaussian noise, can bias any parameter estimation in the presence of outliers. A heavy tailed error assumption based on Student's t distribution…

统计方法学 · 统计学 2018-11-30 Hyungsuk Tak , Justin A. Ellis , Sujit K. Ghosh

We study the maximum likelihood model in emission tomography and propose a new family of algorithms for its solution, called String-Averaging Expectation-Maximization (SAEM). In the String-Averaging algorithmic regime, the index set of all…

医学物理 · 物理学 2019-04-03 E. S. Helou , Y. Censor , T. -B. Chen , I-L. Chern , Á. R. De Pierro , M. Jiang , H. H. -S. Lu

Distributed parameter identification for large-scale multi-agent networks encounters challenges due to nonlinear dynamics and partial observations. Simultaneously, ensuring the stability is crucial for the robust identification of dynamic…

动力系统 · 数学 2024-01-09 Chunhui Li , Chengpu Yu

In this paper we study the expectation maximization (EM) technique for one-bit MIMO-OFDM detection (OMOD). Arising from the recent interest in massive MIMO with one-bit analog-to-digital converters, OMOD is a massive-scale problem. EM is an…

信号处理 · 电气工程与系统科学 2024-01-30 Mingjie Shao , Wing-Kin Ma , Junbin Liu , Zihao Huang

Point cloud registration is a fundamental and challenging problem for autonomous robots interacting in unstructured environments for applications such as object pose estimation, simultaneous localization and mapping, robot-sensor…

机器人学 · 计算机科学 2023-09-29 Michael Gentner , Prajval Kumar Murali , Mohsen Kaboli

A key problem in the theory of meta-learning is to understand how the task distributions influence transfer risk, the expected error of a meta-learner on a new task drawn from the unknown task distribution. In this paper, focusing on fixed…

机器学习 · 统计学 2021-06-15 Mikhail Konobeev , Ilja Kuzborskij , Csaba Szepesvári

The performance of a modulation classifier is highly sensitive to channel signal-to-noise ratio (SNR). In this paper, we focus on amplitude-phase modulations and propose a modulation classification framework based on centralized data fusion…

信息论 · 计算机科学 2013-06-12 Onur Ozdemir , Ruoyu Li , Pramod K. Varshney

In clinical trials, studies often present longitudinal data or clustered data. These studies are commonly analyzed using linear mixed models (LMMs), usually considering Gaussian assumptions for random effect and error terms. Recently,…

统计方法学 · 统计学 2021-09-28 Fernanda L. Schumacher , Larissa A. Matos , Celso R. B. Cabral

Real-world applications may be affected by outlying values. In the model-based clustering literature, several methodologies have been proposed to detect units that deviate from the majority of the data (rowwise outliers) and trim them from…

Clustering high-dimensional data is especially challenging when cluster distributions are heavy tailed and only approximately elliptical. Existing high-dimensional methods are largely built for Gaussian or other light-tailed models, whereas…

统计方法学 · 统计学 2026-05-12 Long Feng , Dan Zhuang

Clustering with incomplete views is a challenge in multi-view clustering. In this paper, we provide a novel and simple method to address this issue. Specifically, the proposed method simultaneously exploits the local information of each…

计算机视觉与模式识别 · 计算机科学 2018-09-18 Jie Wen , Zheng Zhang , Yong Xu , Zuofeng Zhong

Support vector machine (SVM) has been one of the most popular learning algorithms, with the central idea of maximizing the minimum margin, i.e., the smallest distance from the instances to the classification boundary. Recent theoretical…

机器学习 · 计算机科学 2020-07-07 Teng Zhang , Zhi-Hua Zhou

A new maximum approximate likelihood (ML) estimation algorithm for the mixture of Kent distribution is proposed. The new algorithm is constructed via the BSLM (block successive lower-bound maximization) framework and incorporates manifold…

统计计算 · 统计学 2017-09-15 Hien D. Nguyen