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General-purpose object-detection algorithms often dismiss the fine structure of detected objects. This can be traced back to how their proposed regions are evaluated. Our goal is to renegotiate the trade-off between the generality of these…

计算机视觉与模式识别 · 计算机科学 2021-06-01 Azim Ahmadzadeh , Dustin J. Kempton , Yang Chen , Rafal A. Angryk

The setting of metric spaces is very natural for numerous questions concerning manifolds, norms, and fractal sets, and a few of the main ingredients are surveyed here.

度量几何 · 数学 2007-10-26 Stephen Semmes

We consider the concept of fractons, i.e. particles or quasiparticles which obey specific fractal distribution function and for each universal class h of particles we obtain a fractal-deformed Heisenberg algebra. This one takes into account…

高能物理 - 理论 · 物理学 2007-05-23 Wellington da Cruz

The image fractal analysis is actively used in all science branches. In particular in materials science the fractal analysis is applied to study microstructure of deformed metals because its structure can be interpreted as the fractal…

材料科学 · 物理学 2012-05-01 Anatoliy Zavdoveev , Yan Beygelzimer , Victor Varyukhin , Boris Efros

Irregular boundary lines can be characterized by fractal dimension, which provides important information for spatial analysis of complex geographical phenomena such as cities. However, it is difficult to calculate fractal dimension of…

物理与社会 · 物理学 2023-08-09 Yanguang Chen

Modern SAT solvers have experienced a remarkable progress on solving industrial instances. Most of the techniques have been developed after an intensive experimental testing process. Recently, there have been some attempts to analyze the…

人工智能 · 计算机科学 2023-03-14 C. Ansótegui , M. L. Bonet , J. Giráldez-Cru , J. Levy

In this work, major principles of the mathematical constitution of space and the principles of construction of the physical space are presented. Generalized conceptions of distances and dimensionality evaluation are proposed, together with…

综合物理 · 物理学 2007-05-23 Michel Bounias , Volodymyr Krasnoholovets

Here we propose a new method for the classification of texture images combining fractal measures (fractal dimension, multifractal spectrum and lacunarity) with local binary patterns. More specifically we compute the box counting dimension…

计算机视觉与模式识别 · 计算机科学 2021-08-31 Pedro M. Silva , Joao B. Florindo

The spatial distribution of unvisited/persistent sites in $d=1$ $A+A\to\emptyset$ model is studied numerically. Over length scales smaller than a cut-off $\xi(t)\sim t^{z}$, the set of unvisited sites is found to be a fractal. The fractal…

统计力学 · 物理学 2007-05-23 G. Manoj , P. Ray

The fractal properties of models of randomly placed $n$-dimensional spheres ($n$=1,2,3) are studied using standard techniques for calculating fractal dimensions in empirical data (the box counting and Minkowski-sausage techniques). Using…

凝聚态物理 · 物理学 2009-10-28 Daniel A. Hamburger , Ofer Biham , David Avnir

This paper proposes a new method to analyze the spatial structure of urban systems using ideas from fractals. Regarding a system of cities as a set of "particles" distributed randomly on a triangular lattice, we construct a spatial…

物理与社会 · 物理学 2016-06-15 Yanguang Chen , Shiguo Jiang

These lectures on the combinatorics and geometry of 0/1-polytopes are meant as an \emph{introduction} and \emph{invitation}. Rather than heading for an extensive survey on 0/1-polytopes I present some interesting aspects of these objects;…

组合数学 · 数学 2007-05-23 Günter M. Ziegler

The main content of this treatise is a new concept in nonperturbative non-Lagrangian QFT which explains and extends the ad hoc constructions in low-dimensional models and incorporates them together with the higher dimensional theories into…

高能物理 - 理论 · 物理学 2009-09-25 B. Schroer

Partially ordered sets (posets) play a universal role as an abstract structure in many areas of mathematics. For finite posets, an explicit enumeration of distinct partial orders on a set of unlabelled elements is known only up to a…

组合数学 · 数学 2025-04-15 Christoph Minz

While faces of a polytope form a well structured lattice, in which faces of each possible dimension are present, this is not true for general compact convex sets. We address the question of what dimensional patterns are possible for the…

度量几何 · 数学 2017-03-23 Vera Roshchina , Tian Sang , David Yost

In this paper we introduce the notion of fractal codimension of a nilpotent contact point $p$, for $\lambda=\lambda_0$, in smooth planar slow$-$fast systems $X_{\epsilon,\lambda}$ when the contact order $n_{\lambda_0}(p)$ of $p$ is even,…

动力系统 · 数学 2023-04-20 Peter De Maesschalck , Renato Huzak , Ansfried Janssens , Goran Radunović

The purpose of this thesis is to study classical combinatorial objects, such as polytopes, polytopal complexes, and subspace arrangements, using tools that have been developed in combinatorial topology, especially those tools developed in…

组合数学 · 数学 2014-03-12 Karim Alexander Adiprasito

Suppose that $d \geq 2$, and that $A \subset [0,1]$ has sufficiently large dimension, $1 - \epsilon_d < \dim_H(A) < 1$. Then for any polynomial $P$ of degree $d$ with no constant term, there exists a point configuration $\{ x, x-t,x-P(t) \}…

经典分析与常微分方程 · 数学 2019-05-21 Ben Krause

Fractal nests are sets defined as unions of unit $n$-spheres scaled by a sequence of $k^{-\alpha}$ for some $\alpha>0$. In this article we generalise the concept to subsets of such spheres and find the formulas for their box counting…

度量几何 · 数学 2018-08-01 Siniša Miličić

Fractals such as the Cantor set can be equipped with intrinsic arithmetic operations (addition, subtraction, multiplication, division) that map the fractal into itself. The arithmetics allows one to define calculus and algebra intrinsic to…

广义相对论与量子宇宙学 · 物理学 2016-01-20 Diederik Aerts , Marek Czachor , Maciej Kuna