On a Mirkin-Muchnik-Smith Conjecture for Comparing Molecular Phylogenies

نویسنده

  • L. Zhang
چکیده

A conjecture of Mirkin, Muchnik, and Smith is answered affirmatively which connects the inconsistency function, a biologically meaningful similarity/dissimilarity measure for a gene tree and a species tree, to the mutation cost function, a combinatorial measure based on the mapping of trees. A linear-time algorithm for computing the mutation cost function is also derived from the conjecture.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A Biologically Consistent Model for Comparing Molecular Phylogenies

In the framework of the problem of combining different gene trees into a unique species phylogeny, a model for duplication/speciation/loss events along the evolutionary tree is introduced. The model is employed for embedding a phylogeny tree into another one via the so-called duplication/speciation principle requiring that the gene duplicated evolves in such a way that any of the contemporary s...

متن کامل

Combinatoral Optimization in Clustering

5 Single Cluster Clustering 16 5.1 Clustering Approaches . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.1.1 De nition-based Clusters . . . . . . . . . . . . . . . . . . . . 16 5.1.2 Direct Algorithms . . . . . . . . . . . . . . . . . . . . . . . . 18 5.1.3 Optimal Clusters . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.2 Single and Monotone Linkage Clusters . . . . . . . . . ....

متن کامل

Induced layered clusters, hereditary mappings, and convex geometries

A method for structural clustering proposed by the authors is extended to the case when there are externally de ned restrictions on the relations between sets and their elements. This framework appears to be related to order-theoretic concepts of the hereditary mappings and convex geometries, which enables us to give characterizations of those in terms of the monotone linkage functions.

متن کامل

Layered clusters of tightness set functions

A method for structural clustering is proposed involving data on subset-to-entity linkages that can be calculated with structural data such as graphs or sequences or images. The method is based on the layered structure of the problem of maximization of a set function de ned as the minimum value of linkages between a set and its elements and referred to as the tightness function. When the linkag...

متن کامل

Toward a More Reliable Morphological Data Set for Phylogenetic Reconstruction

For decades, the relationships between different species have been discerned by way of a set of observable characteristics. Based on the similarity of certain observables, two species could be grouped together, along with other organisms that shared the same features. By these methods, scientists constructed a hierarchy of life. Taxonomy is the name given to the study and organization of differ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Journal of computational biology : a journal of computational molecular cell biology

دوره 4 2  شماره 

صفحات  -

تاریخ انتشار 1997