The genealogical sorting index: software and web site for quantifying the exclusivity of lineages
نویسندگان
چکیده
Background: We introduce the software that calculates a new statistic that we call the genealogical sorting index, or gsi. This statistic quantifies the common ancestry of groups of individuals on a phylogenetic tree. The significance of an observed genealogical sorting index value is measured with permutation testing. Results: The algorithm for calculating the genealogical sorting index was written in R, a statistical programming environment. We intend to make the code available as an open source package for R. In addition, we have developed a web service (http://www.molecularevolution.org/) for users interested in quickly calculating the genealogical sorting index and performing permutation tests on phylogenetic trees. Conclusions: The genealogical sorting index appropriately quantifies the extent to which commonly labeled individuals are united in a tree. It is intuitive, simple, and easily calculated. The software that calculates the genealogical sorting index and measures its significance is made freely available.
منابع مشابه
A genealogical approach to quantifying lineage divergence.
We introduce a statistic, the genealogical sorting index (gsi), for quantifying the degree of exclusive ancestry of labeled groups on a rooted genealogy and demonstrate its application. The statistic is simple, intuitive, and easily calculated. It has a normalized range to facilitate comparisons among different groups, trees, or studies and it provides information on individual groups rather th...
متن کاملComputation and Comparison of Genealogical Sorting Indexes Genealogical Sorting Indexes
The concept of Genealogical Sorting Indexes (GSIs) was first introduced by Cummings et al. [1]. Given a set of observations belonging to different groups (represented in the form of a hierarchial tree), the Genealogical Sorting Index (GSI) value obtained for a particular group provides a quantitative measure of how closely the observations belonging to this group have clustered in the given tre...
متن کاملThe influential factors on the quality of electronic service in sport from Esteghlal club fans point of view
The purpose of the present research is investigation of the theoretical relationship between the main variables of online exercise performance and their impact upon rendering service quality via internet. The statistical population was included of all fans of Tehran Esteghlal sport club, who electronically and via web site purchased the fans products and received information through club media....
متن کاملQuantifying the trend of vegetation changes using remote sensing (Case study: Fars Province)
Investigating the sustainability of vegetation changes is one of the most important issues of vegetation management in the direction of sustainable development. It is necessary to conduct studies in this regard to select appropriate management for greater compatibility with new conditions. In this research, changes in the vegetation dynamics trend of Fars province were studied using the NDVI in...
متن کاملA sequential approach using genetic and morphological analyses to test species status: the case of United States federally endangered Agalinis acuta (Orobanchaceae).
PREMISE OF THE STUDY Given that inaccurate taxonomy can have negative consequences for species of conservation concern and result in erroneous conclusions regarding macroecological patterns, efficient methods for resolving taxonomic uncertainty are essential. The primary objective of this study was to assess the evolutionary distinctiveness of the federally endangered plant species Agalinis acu...
متن کامل