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We experimentally probe the vicinity of the jamming point J, located at a density $\phi$ corresponding to random close packing ($\phi_{rcp} = 0.842$), in two dimensional, bidisperse packings of foam bubbles. We vary the density of the foam…

软凝聚态物质 · 物理学 2015-05-19 Gijs Katgert , Martin van Hecke

The $k$-NN graph has played a central role in increasingly popular data-driven techniques for various learning and vision tasks; yet, finding an efficient and effective way to construct $k$-NN graphs remains a challenge, especially for…

计算机视觉与模式识别 · 计算机科学 2013-07-31 Jingdong Wang , Jing Wang , Gang Zeng , Zhuowen Tu , Rui Gan , Shipeng Li

Stein's method is used to approximate sums of discrete and locally dependent random variables by a centered and symmetric Binomial distribution. Under appropriate smoothness properties of the summands, the same order of accuracy as in the…

概率论 · 数学 2007-05-23 Adrian Röllin

The \textit{biharmonic distance} (BD) is a fundamental metric that measures the distance of two nodes in a graph. It has found applications in network coherence, machine learning, and computational graphics, among others. In spite of BD's…

社会与信息网络 · 计算机科学 2024-08-27 Changan Liu , Ahad N. Zehmakan , Zhongzhi Zhang

The primary distance indicators are established in our Galaxy and the Local Group. There are at least four different methods which give good distances: methods using proper motions, RR Lyraes, Cepheid variables, and Type II supernovae.…

天体物理学 · 物理学 2009-10-28 Dragan Huterer , Dimitar D. Sasselov , Paul L. Schechter

The localization problem in a wireless sensor network is to determine the coordination of sensor nodes using the known positions of some nodes (called anchors) and corresponding noisy distance measurements. There is a variety of different…

最优化与控制 · 数学 2014-09-19 Pouya Mollaebrahim Ghari , Reza Shahbazian , Seyed Ali Ghorashi

Near neighbor search (NNS) is a powerful abstraction for data access; however, data indexing is troublesome even for approximate indexes. For intrinsically high-dimensional data, high-quality fast searches demand either indexes with…

数据结构与算法 · 计算机科学 2021-06-30 Eric S. Tellez , Guillermo Ruiz , Edgar Chavez , Mario Graff

A k nearest neighbor (kNN) query on road networks retrieves the k closest points of interest (POIs) by their network distances from a given location. Today, in the era of ubiquitous mobile computing, this is a highly pertinent query. While…

数据结构与算法 · 计算机科学 2016-08-11 Tenindra Abeywickrama , Muhammad Aamir Cheema , David Taniar

Determinantal Point Processes (DPPs) are elegant probabilistic models of repulsion and diversity over discrete sets of items. But their applicability to large sets is hindered by expensive cubic-complexity matrix operations for basic tasks…

机器学习 · 计算机科学 2016-05-31 Chengtao Li , Stefanie Jegelka , Suvrit Sra

Controlling the shape and position of moving and pinned droplets on a solid surface is an important feature often found in microfluidic applications. However, automating them, e.g., for high-throughput applications, does rarely involve…

流体动力学 · 物理学 2020-07-09 Henning Bonart , Christian Kahle , Jens-Uwe Repke

Optical near fields are at the heart of various applications in sensing and imaging. We investigate dipole scattering as a parameter estimation problem and show that optical near-fields carry more information about the location and the…

量子物理 · 物理学 2024-06-18 Lukas Kienesberger , Thomas Juffmann , Stefan Nimmrichter

We consider rational points on the sphere and investigate their equidistribution in shrinking spherical caps. For the two-dimensional sphere, we leverage Hecke operators to obtain a significantly improved small-scale equidistribution bound,…

数论 · 数学 2025-02-26 Claire Burrin , Matthias Gröbner

We propose to view non-rigid surface registration as a probabilistic inference problem. Given a target surface, we estimate the posterior distribution of surface registrations. We demonstrate how the posterior distribution can be used to…

计算机视觉与模式识别 · 计算机科学 2020-07-20 Dennis Madsen , Andreas Morel-Forster , Patrick Kahr , Dana Rahbani , Thomas Vetter , Marcel Lüthi

Spectroastrometry is a technique which has the potential to resolve flux distributions on scales of milliarcseconds. In this study, we examine the application of spectroastrometry to binary point sources which are spatially unresolved due…

天体物理学 · 物理学 2009-11-10 John M. Porter , Rene D. Oudmaijer , Debbie Baines

This work studies the chord length distribution, in the case where both ends lie on a $N$-dimensional hypersphere ($N \geq 2$). Actually, after connecting this distribution to the recently estimated surface of a hyperspherical cap…

概率论 · 数学 2014-11-21 Panagiotis Sidiropoulos

Analyzing high-dimensional data with manifold learning algorithms often requires searching for the nearest neighbors of all observations. This presents a computational bottleneck in statistical manifold learning when observations of…

机器学习 · 计算机科学 2022-03-11 Fan Cheng , Anastasios Panagiotelis , Rob J Hyndman

The homogeneous poisson point process (PPP) is widely used to model temporal, spatial or both topologies of base stations (BSs) and mobile terminals (MTs). However, negative spatial correlation in BSs, due to strategical deployments, and…

The arrival of molecules in molecular communication via diffusion (MCvD) is a counting process, exhibiting by its nature binomial distribution. Even if the binomial process describes well the arrival of molecules, when considering…

新兴技术 · 计算机科学 2014-10-29 H. Birkan Yilmaz , Chan-Byoung Chae , Burcu Tepekule , Ali E. Pusane

We describe in this paper the theory and practice behind a new modal clustering method for binary data. Our approach (BinNNMS) is based on the nearest neighbor median shift. The median shift is an extension of the well-known mean shift,…

机器学习 · 计算机科学 2022-03-04 Gaël Beck , Tarn Duong , Mustapha Lebbah , Hanane Azzag

This paper proposes a new probabilistic classification algorithm using a Markov random field approach. The joint distribution of class labels is explicitly modelled using the distances between feature vectors. Intuitively, a class label…

统计计算 · 统计学 2010-06-02 Nial Friel , Anthony N. Pettitt