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Graphs are widely used to model complicated data semantics in many application domains. In this paper, two novel and efficient algorithms Fast-ON and Fast-P are proposed for solving the subgraph isomorphism problem. The two algorithms are…

数据结构与算法 · 计算机科学 2019-04-19 Mosab Hassaan , Karam Gouda

Correlated phenomena occur in quantum materials because of the delicate interplay between internal degrees of freedom, leading to multiple symmetry-broken quantum phases. Resolving the structure of these phases is a key challenge, often…

Purpose: Development of a novel interactive visualization approach for the exploration of radiotherapy treatment plans with a focus on overlap volumes with the aim of healthy tissue sparing. Methods: We propose a visualization approach to…

人机交互 · 计算机科学 2023-10-03 Matthias Schlachter , Samuel Peters , Daniel Camenisch , Paul Martin Putora , Katja Bühler

We propose a hybrid quantum approach to threshold and binarize a grayscale image through unsharp measurements (UM) relying on image histogram. Generally, the histograms are characterized by multiple overlapping normal distributions…

量子物理 · 物理学 2024-01-02 Ayan Barui , Mayukha Pal , Prasanta K. Panigrahi

Pattern matching can be used to calculate the support of patterns, and is a key issue in sequential pattern mining (or sequence pattern mining). Nonoverlapping pattern matching means that two occurrences cannot use the same character in the…

数据库 · 计算机科学 2022-09-08 Youxi Wu , Bojing Jian , Yan Li , He Jiang , Xindong Wu

Spatially resolved analysis of uranium isotopes in small volumes of actinide-bearing materials is critical for a variety of technical disciplines, including earth and planetary sciences, environmental monitoring, bioremediation, and the…

应用物理 · 物理学 2019-09-04 Elizabeth Kautz , Douglas Burkes , Vineet Joshi , Curt Lavender , Arun Devaraj

Solving point-wise feature correspondence in visual data is a fundamental problem in computer vision. A powerful model that addresses this challenge is to formulate it as graph matching, which entails solving a Quadratic Assignment Problem…

计算机视觉与模式识别 · 计算机科学 2024-10-23 Yongqing Liang , Huijun Han , Xin Li

We introduce a class of specially structured linear programming (LP) problems, which has favorable modeling capability for important application problems in different areas such as optimal transport, discrete tomography and economics. To…

最优化与控制 · 数学 2022-04-26 Hong T. M. Chu , Ling Liang , Kim-Chuan Toh , Lei Yang

With the emergence of new photonic and plasmonic materials with optimized properties as well as advanced nanofabrication techniques, nanophotonic devices are now capable of providing solutions to global challenges in energy conversion,…

This paper studies the underlying combinatorial structure of a class of object rearrangement problems, which appear frequently in applications. The problems involve multiple, similar-geometry objects placed on a flat, horizontal surface,…

机器人学 · 计算机科学 2017-11-21 Shuai D Han , Nicholas M Stiffler , Athanasios Krontiris , Kostas E Bekris , Jingjin Yu

We report the development of numerical tools for the topological analysis of sub--degree resolution, all--sky maps. Software to be released in the HEALFAST (V0.9) package defines neighbour relationships for the HEALPIX tessellation of the…

天体物理学 · 物理学 2007-05-23 Benjamin D. Wandelt , Eric Hivon , Kris M. Gorski

Determining whether two graphs are structurally identical is a fundamental problem with applications spanning mathematics, computer science, chemistry, and network science. Despite decades of study, graph isomorphism remains a challenging…

计算物理 · 物理学 2026-04-10 Sara Najem , Amer E. Mouawad

In this paper, we address the problem of detecting small, dense, and overlapping objects, a major challenge in computer vision. Our focus is on reviewing proposed methods based on deep learning supervised approaches. We provide a detailed…

计算机视觉与模式识别 · 计算机科学 2026-05-27 Oussama Messai , Abbass Zein-Eddine , Abdelouahid Bentamou , Mickael Picq , Nicolas Duquesne , Stéphane Puydarrieux , Yann Gavet

Structure and function in nanoscale atomistic assemblies are tightly coupled, and every atom with its specific position and even every electron will have a decisive effect on the electronic structure, and hence, on the molecular properties.…

化学物理 · 物理学 2024-02-21 Katja-Sophia Csizi , Markus Reiher

A position-energy-sensitive detector has been developed for APT instruments in order to deal with some mass peak overlap issues encountered in APT experiments. Through this new type of detector, quantitative and qualitative improvements…

To solve the combinatorial optimization problems especially the minimal Vertex-cover problem with high efficiency, is a significant task in theoretical computer science and many other subjects. Aiming at detecting the solution space of…

数学物理 · 物理学 2014-12-18 Wei Wei , Renquan Zhang , Binghui Guo , Zhiming Zheng

The symmetry of complex networks is a global property that has recently gained attention since MacArthur et al. 2008 showed that many real-world networks contain a considerable number of symmetries. These authors work with a very strict…

社会与信息网络 · 计算机科学 2023-12-14 Anna Pidnebesna , David Hartman , Aneta Pokorná , Matěj Straka , Jaroslav Hlinka

In the machine learning field, dimensionality reduction is an important task. It mitigates the undesired properties of high-dimensional spaces to facilitate classification, compression, and visualization of high-dimensional data. During the…

机器学习 · 计算机科学 2019-11-19 Mohammed Elhenawy , Mahmoud Masoud , Sebastian Glaser , Andry Rakotonirainy

Various non-trivial spaces are becoming popular for embedding structured data such as graphs, texts, or images. Following spherical and hyperbolic spaces, more general product spaces have been proposed. However, searching for the best…

机器学习 · 计算机科学 2022-04-11 Kirill Shevkunov , Liudmila Prokhorenkova

Linear subspace representations of appearance variation are pervasive in computer vision. This paper addresses the problem of robustly matching such subspaces (computing the similarity between them) when they are used to describe the scope…

计算机视觉与模式识别 · 计算机科学 2014-02-03 Ognjen Arandjelovic