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Deep metric learning aims to learn a deep embedding that can capture the semantic similarity of data points. Given the availability of massive training samples, deep metric learning is known to suffer from slow convergence due to a large…

Machine Learning · Computer Science 2019-12-05 Xinshao Wang , Yang Hua , Elyor Kodirov , Guosheng Hu , Neil M. Robertson

Existing perceptual similarity metrics assume an image and its reference are well aligned. As a result, these metrics are often sensitive to a small alignment error that is imperceptible to the human eyes. This paper studies the effect of…

Computer Vision and Pattern Recognition · Computer Science 2022-07-28 Abhijay Ghildyal , Feng Liu

In this paper, we propose a new beam allocation strategy aiming to maximize the average successful tracking probability (ASTP) of time-varying millimeter-wave MIMO systems. In contrast to most existing works that employ one…

Signal Processing · Electrical Eng. & Systems 2019-07-02 Deyou Zhang , Ang Li , He Chen , Ning Wei , Ming Ding , Yonghui Li , Branka Vucetic

The definition of weighted distance measure involves weights. The paper proposes a weighted distance measure without the help of weights. Here, weights are intrinsically added to the measure, and for this, the concept of metric space is…

Metric Geometry · Mathematics 2023-12-20 Q. M. Danish Lohani , Ashutosh Tiwari , Mohd Shoaib Khan

A common but rarely examined assumption in machine learning is that training yields models that actually satisfy their specified objective function. We call this the Objective Satisfaction Assumption (OSA). Although deviations from OSA are…

Artificial Intelligence · Computer Science 2026-02-11 Antoine Maier , Aude Maier , Tom David

This paper studies the opportunistic spectrum access (OSA) of the secondary users in a large-scale overlay cognitive radio (CR) network. Two threshold-based OSA schemes, namely the primary receiver assisted (PRA) protocol and the primary…

Information Theory · Computer Science 2016-11-18 Xiaoshi Song , Changchuan Yin , Danpu Liu , Rui Zhang

Unsupervised domain adaptation is one of the challenging problems in computer vision. This paper presents a novel approach to unsupervised domain adaptations based on the optimal transport-based distance. Our approach allows aligning target…

Computer Vision and Pattern Recognition · Computer Science 2022-05-24 Thanh-Dat Truong , Naga Venkata Sai Raviteja Chappa , Xuan Bac Nguyen , Ngan Le , Ashley Dowling , Khoa Luu

Open-set test-time adaptation (OSTTA) addresses the challenge of adapting models to new environments where out-of-distribution (OOD) samples coexist with in-distribution (ID) samples affected by distribution shifts. In such settings,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-03 Wenjie Zhao , Jia Li , Xin Dong , Yapeng Tian , Yu Xiang , Yunhui Guo

In this paper we propose an optimization-based framework to multiple object matching. The framework takes maps computed between pairs of objects as input, and outputs maps that are consistent among all pairs of objects. The central idea of…

Data Structures and Algorithms · Computer Science 2018-04-12 Nan Hu , Qixing Huang , Boris Thibert , Leonidas Guibas

The reversed and shift (RAS) sparse array scheme, which is based on the difference and sum co-array (DSCA) and remarkably enhances the capability of identifying sources, is proposed. For the original nested array (NA) or co-prime array…

Signal Processing · Electrical Eng. & Systems 2020-11-30 Yan Zhou , Jin Li , Nieke Wei

The matching distance is a computationally tractable topological measure to compare multi-filtered simplicial complexes. We design efficient algorithms for approximating the matching distance of two bi-filtered complexes to any desired…

Computational Geometry · Computer Science 2020-04-02 Michael Kerber , Arnur Nigmetov

Accurate knowledge of absorption coefficient of a sample is a prerequisite for measuring the third order optical nonlinearity of materials, which could become a serious limitation for unknown samples. We introduce a new method, which…

Optics · Physics 2007-05-23 S. Abbas Hosseini , A. Sharan , D. Goswami

Image pattern recognition is an important area in digital image processing. An efficient pattern recognition algorithm should be able to provide correct recognition at a reduced computational time. Off late amongst the machine learning…

Computer Vision and Pattern Recognition · Computer Science 2016-12-08 Lei Shi , Rui Guo , Yuchen Ma

Image composition aims to generate realistic composite image by inserting an object from one image into another background image, where the placement (e.g., location, size, occlusion) of inserted object may be unreasonable, which would…

Computer Vision and Pattern Recognition · Computer Science 2022-06-22 Liu Liu , Zhenchen Liu , Bo Zhang , Jiangtong Li , Li Niu , Qingyang Liu , Liqing Zhang

The problem of overlapping occlusion in target recognition has been a difficult research problem, and the situation of mutual occlusion of ship targets in narrow waters still exists. In this paper, an improved mosaic data enhancement method…

Computer Vision and Pattern Recognition · Computer Science 2021-05-12 Guangmiao Zeng , Wanneng Yu , Rongjie Wang , Anhui Lin

A non-orthogonal multiple access (NOMA)-inspired integrated sensing and communication (ISAC) framework is proposed, where a dual-functional base station (BS) transmits the composite communication and sensing signals. In contrast to treating…

Information Theory · Computer Science 2022-08-02 Zhaolin Wang , Xidong Mu , Yuanwei Liu , Zhiguo Ding

We study optimal quantum sensing of multiple physical parameters using repeated measurements. In this scenario, the Fisher information framework sets the fundamental limits on sensing performance, yet the optimal states and corresponding…

Quantum Physics · Physics 2024-04-23 Denis V. Vasilyev , Athreya Shankar , Raphael Kaubruegger , Peter Zoller

The design of an interferometric array should allow optimal instrumental response regarding all possible source positions, times of integration and scientific goals. It should also take into account constraints such as forbidden regions on…

Astrophysics · Physics 2009-11-07 F. Boone

The midpoint method or technique is a measurement and as each measurement it has a tolerance, but worst of all it can be invalid, called Out-of-Control or OoC. The core of all midpoint methods is the accurate measurement of the difference…

Graphics · Computer Science 2015-02-23 Valere Huypens

A novel continuous-aperture-array (CAPA)-aided integrated sensing and communication (ISAC) framework is proposed. Specifically, an optimal continuous ISAC waveform is designed to form a directive beampattern for multi-target sensing while…

Signal Processing · Electrical Eng. & Systems 2025-11-26 Junjie Ye , Zhaolin Wang , Yuanwei Liu , Peichang Zhang , Lei Huang , Arumugam Nallanathan