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Molecular phylogenetic techniques do not generally account for such common evolutionary events as site insertions and deletions (known as indels). Instead tree building algorithms and ancestral state inference procedures typically rely on…

Compatibility of unrooted phylogenetic trees is a well studied problem in phylogenetics. It asks to determine whether for a set of k input trees there exists a larger tree (called a supertree) that contains the topologies of all k input…

离散数学 · 计算机科学 2014-03-03 Alexander Grigoriev , Steven Kelk , Nela Lekic

The displayed tree phylogenetic network model is shown to sit as a natural submodel of the graphical model associated to a directed acyclic graph (DAG). This representation allows to derive a number of results about the displayed tree…

种群与进化 · 定量生物学 2025-08-01 Seth Sullivant

Phylogenetic networks are a generalization of phylogenetic trees that allow for representation of reticulate evolution. Recently, a space of unrooted phylogenetic networks was introduced, where such a network is a connected graph in which…

种群与进化 · 定量生物学 2017-03-09 Andrew Francis , Katharina Huber , Vincent Moulton , Taoyang Wu

Phylogenomics commonly aims to construct evolutionary trees from genomic sequence information. One way to approach this problem is to first estimate event-labeled gene trees (i.e., rooted trees whose non-leaf vertices are labeled by…

组合数学 · 数学 2019-05-09 Marc Hellmuth , Katharina T. Huber , Vincent Moulton

Phylogenetic networks are used to represent the evolutionary history of species. Recently, the new class of orchard networks was introduced, which were later shown to be interpretable as trees with additional horizontal arcs. This makes the…

组合数学 · 数学 2023-05-09 Leo van Iersel , Mark Jones , Esther Julien , Yukihiro Murakami

In phylogenetics, reconstructing rooted trees from distances between taxa is a common task. B\"ocker and Dress generalized this concept by introducing symbolic dated maps $\delta:X \times X \to \Upsilon$, where distances are replaced by…

组合数学 · 数学 2024-06-28 Anna Lindeberg , Guillaume E. Scholz , Marc Hellmuth

We compare the phylogenetic tensors for various trees and networks for two, three and four taxa. If the probability spaces between one tree or network and another are not identical then there will be phylogenetic tensors that could have…

种群与进化 · 定量生物学 2016-06-24 Jonathan Mitchell

Phylogenetic invariants are certain polynomials in the joint probability distribution of a Markov model on a phylogenetic tree. Such polynomials are of theoretical interest in the field of algebraic statistics and they are also of practical…

种群与进化 · 定量生物学 2008-01-21 Nicholas Eriksson

Photometric transformations, such as brightness and contrast adjustment, can be applied to a face image repeatedly creating a set of near-duplicate images. Identifying the original image from a set of such near-duplicates and deducing the…

计算机视觉与模式识别 · 计算机科学 2020-03-17 Sudipta Banerjee , Arun Ross

In this paper, we lay the groundwork on the comparison of phylogenetic networks based on edge contractions and expansions as edit operations, as originally proposed by Robinson and Foulds to compare trees. We prove that these operations…

数据结构与算法 · 计算机科学 2025-02-21 Bertrand Marchand , Nadia Tahiri , Olivier Tremblay-Savard , Manuel Lafond

A phylogenetic network is a graph-theoretical tool that is used by biologists to represent the evolutionary history of a collection of species. One potential way of constructing such networks is via a distance-based approach, where one is…

组合数学 · 数学 2020-06-15 Leo van Iersel , Vincent Moulton , Yukihiro Murakami

In this work, we answer an open problem in the study of phylogenetic networks. Phylogenetic trees are rooted binary trees in which all edges are directed away from the root, whereas phylogenetic networks are rooted acyclic digraphs. For the…

种群与进化 · 定量生物学 2015-11-12 Andreas D. M. Gunawan , Bhaskar DasGupta , Louxin Zhang

Phylogenetic networks are used to represent evolutionary scenarios in biology and linguistics. To find the most probable scenario, it may be necessary to compare candidate networks, to distinguish different networks, and to see when one…

组合数学 · 数学 2020-04-10 Remie Janssen , Yukihiro Murakami

In this paper we apply new geometric and combinatorial methods to the study of phylogenetic mixtures. The focus of the geometric approach is to describe the geometry of phylogenetic mixture distributions for the two state random cluster…

种群与进化 · 定量生物学 2007-11-08 Frederick A. Matsen , Elchanan Mossel , Mike Steel

Rooted phylogenetic networks are used by biologists to infer and represent complex evolutionary relationships between species that cannot be accurately explained by a phylogenetic tree. Tree-child networks are a particular class of rooted…

组合数学 · 数学 2024-09-02 Janosch Döcker , Simone Linz

Pedigrees, or family trees, are graphs of family relationships that are used to study inheritance. A fundamental problem in computational biology is to find, for a pedigree with $n$ individuals genotyped at every site, a set of…

数据结构与算法 · 计算机科学 2016-02-16 Bonnie Kirkpatrick

This thesis develops and expands upon known techniques of mathematical physics relevant to the analysis of the popular Markov model of phylogenetic trees required in biology to reconstruct the evolutionary relationships of taxonomic units…

定量方法 · 定量生物学 2007-10-18 J G Sumner

Originating in quantum physics, tensor networks (TNs) have been widely adopted as exponential machines and parameter decomposers for recognition tasks. Typical TN models, such as Matrix Product States (MPS), have not yet achieved successful…

计算机视觉与模式识别 · 计算机科学 2025-02-17 Chang Nie , Junfang Chen , Yajie Chen

Network reconstruction lies at the heart of phylogenetic research. Two well studied classes of phylogenetic networks include tree-child networks and level-$k$ networks. In a tree-child network, every non-leaf node has a child that is a tree…

组合数学 · 数学 2019-07-23 Yukihiro Murakami , Leo van Iersel , Remie Janssen , Mark Jones , Vincent Moulton