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2017 ; 5
(ä): e3058
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English Wikipedia
A supertree pipeline for summarizing phylogenetic and taxonomic information for
millions of species
#MMPMID28265520
Redelings BD
; Holder MT
PeerJ
2017[]; 5
(ä): e3058
PMID28265520
show ga
We present a new supertree method that enables rapid estimation of a summary tree
on the scale of millions of leaves. This supertree method summarizes a collection
of input phylogenies and an input taxonomy. We introduce formal goals and
criteria for such a supertree to satisfy in order to transparently and
justifiably represent the input trees. In addition to producing a supertree, our
method computes annotations that describe which grouping in the input trees
support and conflict with each group in the supertree. We compare our supertree
construction method to a previously published supertree construction method by
assessing their performance on input trees used to construct the Open Tree of
Life version 4, and find that our method increases the number of displayed input
splits from 35,518 to 39,639 and decreases the number of conflicting input splits
from 2,760 to 1,357. The new supertree method also improves on the previous
supertree construction method in that it produces no unsupported branches and
avoids unnecessary polytomies. This pipeline is currently used by the Open Tree
of Life project to produce all of the versions of project's "synthetic tree"
starting at version 5. This software pipeline is called "propinquity". It relies
heavily on "otcetera"-a set of C++ tools to perform most of the steps of the
pipeline. All of the components are free software and are available on GitHub.