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Tree-child networks are a recently-described class of directed acyclic graphs that have risen to prominence in phylogenetics (the study of evolutionary trees and networks). Although these networks have a number of attractive mathematical…

概率论 · 数学 2023-01-10 François Bienvenu , Amaury Lambert , Mike Steel

We consider a distributed detection system with communication constraints, where several nodes are arranged in an arbitrary tree topology, under the assumption of conditionally independent observations. We propose a cyclic design procedure…

信息论 · 计算机科学 2015-01-23 Alla Tarighati , Joakim Jalden

We make precise and prove a conjecture of Klivans about actions of the sandpile group on spanning trees. More specifically, the conjecture states that there exists a unique ``suitably nice'' sandpile torsor structure on plane graphs which…

组合数学 · 数学 2023-09-11 Ankan Ganguly , Alex McDonough

Push-Pull is a well-studied round-robin rumor spreading protocol defined as follows: initially a node knows a rumor and wants to spread it to all nodes in a network quickly. In each round, every informed node sends the rumor to a random…

社会与信息网络 · 计算机科学 2014-10-31 Abbas Mehrabian , Ali Pourmiri

We study the spectral Tur\'an problem for trees. To avoid limiting our perspective to specific families of trees, we parametrize trees in terms of their unique bipartition. We say $T \in \mathcal{T}_{m,l+1}^{\delta}$ if $T$ is a tree of…

组合数学 · 数学 2025-05-22 Dheer Noal Desai , Hemanshu Kaul , Bahareh Kudarzi

Much interest has been taken in understanding the global routing structure of the Internet, both to model and protect the current structures and to modify the structure to improve resilience. These studies rely on trace-routes and…

网络与互联网体系结构 · 计算机科学 2014-10-14 Joshua Parker , Arnold Boedihardjo

In the theoretical study of distributed communication networks, "history trees" are a discrete structure that naturally models the concept that anonymous agents become distinguishable upon receiving different sets of messages from…

分布式、并行与集群计算 · 计算机科学 2024-07-02 Giovanni Viglietta

The Wiener index of a connected graph is the sum of distances between all unordered pairs of vertices. Sam Spiro [The Wiener index of signed graphs, Appl. Math. Comput., 416(2022)126755] recently introduced the Wiener index for a signed…

组合数学 · 数学 2022-08-04 Songlin Guo , Wei Wang , Chuanming Wang

In pruning, the Lottery Ticket Hypothesis posits that large networks contain sparse subnetworks, or winning tickets, that can be trained in isolation to match the performance of their dense counterparts. However, most existing approaches…

人工智能 · 计算机科学 2026-01-30 Grzegorz Stefanski , Alberto Presta , Michal Byra

In practice, since many communication networks are huge in scale, or complicated in structure, or even dynamic, the predesigned linear network codes based on the network topology is impossible even if the topological structure is known.…

信息论 · 计算机科学 2013-02-26 Xuan Guang , Fang-Wei Fu

The classical matrix-tree theorem relates the determinant of the combinatorial Laplacian on a graph to the number of spanning trees. We generalize this result to Laplacians on one- and two-dimensional vector bundles, giving a combinatorial…

概率论 · 数学 2011-12-09 Richard Kenyon

A contemporary and fundamental problem faced by many evolutionary biologists is how to puzzle together a collection $\mathcal P$ of partial trees (leaf-labelled trees whose leaves are bijectively labelled by species or, more generally,…

组合数学 · 数学 2007-09-04 S. Grünewald , K. T. Huber , Q. Wu

This article reviews and evaluates models of network evolution based on the notion of structural diversity. We show that diversity is an underlying theme of three principles of network evolution: the preferential attachment model,…

社会与信息网络 · 计算机科学 2020-09-22 Jérôme Kunegis

Rapidly Exploring Random Trees (RRT) is one of the most widely used algorithms for motion planning in the field of robotics. To reduce the exploration time, RRT-Connect was introduced where two trees are simultaneously formed and eventually…

机器人学 · 计算机科学 2023-05-16 Darshit Patel , Azim Eskandarian

The contraction cost of a tensor network depends on the contraction order. However, the optimal contraction ordering problem is known to be NP-hard. We show that the linear contraction ordering problem for tree tensor networks admits a…

量子物理 · 物理学 2024-10-10 Mihail Stoian , Richard Milbradt , Christian B. Mendl

Neural networks have been used prominently in several machine learning and statistics applications. In general, the underlying optimization of neural networks is non-convex which makes their performance analysis challenging. In this paper,…

机器学习 · 统计学 2017-10-09 Soheil Feizi , Hamid Javadi , Jesse Zhang , David Tse

Inspired by studies on the airports' network and the physical Internet, we propose a general model of weighted networks via an optimization principle. The topology of the optimal network turns out to be a spanning tree that minimizes a…

物理与社会 · 物理学 2009-11-11 Marc Barthelemy , Alessandro Flammini

Neural Networks and Decision Trees: two popular techniques for supervised learning that are seemingly disconnected in their formulation and optimization method, have recently been combined in a single construct. The connection pivots on…

机器学习 · 统计学 2020-02-27 Giuseppe Nuti , Lluís Antoni Jiménez Rugama , Kaspar Thommen

In this paper it is shown that for any network there is a uniquely determined network based on a structure tree that provides a convenient way of determining a minimal cut separating a pair $s, t$ where each of $s, t$ is either a vertex or…

组合数学 · 数学 2015-01-05 M. J. Dunwoody

Mobile computing systems, service-based systems and some other systems with mobile interacting components have recently received much attention. However, because of their characteristics such as mobility and disconnection, it is difficult…

软件工程 · 计算机科学 2021-11-04 Zhijun Ding , Ru Yang , Puwen Cui , MengChu Zhou , Changjun Jiang