Results 31 to 40 of about 4,210,592 (370)
Tree contractions and evolutionary trees [PDF]
SIAM Journal on Computing, 1997 An evolutionary tree is a rooted tree where each internal vertex has at least two children and where the leaves are labeled with distinct symbols representing species. Evolutionary trees are useful for modeling the evolutionary history of species. An agreement subtree of two evolutionary trees is an evolutionary tree which is also a topological subtree
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ASTRAL-III: polynomial time species tree reconstruction from partially resolved gene trees
BMC Bioinformatics, 2018 Evolutionary histories can be discordant across the genome, and such discordances need to be considered in reconstructing the species phylogeny. ASTRAL is one of the leading methods for inferring species trees from gene trees while accounting for gene ...
Chao Zhang +3 more
semanticscholar +1 more source
MicroorganismsAlpine meadows on the Qinghai–Tibetan Plateau are experiencing rapid degradation due to climate change and anthropogenic disturbances, leading to severe ecological consequences.
Bingzhang Li +5 more
doaj +1 more source
Tree size and herbivory determine below-canopy grass quality and species composition in savannahs [PDF]
, 2009 Large single-standing trees are rapidly declining in savannahs, ecosystems supporting a high diversity of large herbivorous mammals. Savannah trees are important as they support both a unique flora and fauna.
Grant, C.C., Jeltsch, F., Treydte, A.C.
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BART: Bayesian Additive Regression Trees [PDF]
, 2008 We develop a Bayesian "sum-of-trees" model where each tree is constrained by a regularization prior to be a weak learner, and fitting and inference are accomplished via an iterative Bayesian backfitting MCMC algorithm that generates samples from a ...
H. Chipman, E. George, R. McCulloch
semanticscholar +1 more source
Resistance of Scotch Pine Varieties to Zimmerman Pine Moth (Lepidoptera: Pyralidae) and Its Impact on Sales in a Choose and Cut Christmas Tree Plantation [PDF]
, 2017 Nine varieties of Scotch pine, Pinus sylvestris, were assessed for their susceptibility to Zimmerman pine moth, Dioryctria zimmermani, in a choose and cut Christmas tree plantation.
Sadof, Clifford S
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Trees within trees II: Nested fragmentations [PDF]
Annales de l'Institut Henri Poincaré, Probabilités et Statistiques, 2020 Similarly as in (Blancas et al. 2018) where nested coalescent processes are studied, we generalize the definition of partition-valued homogeneous Markov fragmentation processes to the setting of nested partitions, i.e. pairs of partitions $( , )$ where $ $ is finer than $ $.
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Graph Convolution over Pruned Dependency Trees Improves Relation Extraction [PDF]
Conference on Empirical Methods in Natural Language Processing, 2018 Dependency trees help relation extraction models capture long-range relations between words. However, existing dependency-based models either neglect crucial information (e.g., negation) by pruning the dependency trees too aggressively, or are ...
Yuhao Zhang +2 more
semanticscholar +1 more source
Zootaxa, 2014 Are birds dinosaurs? Answers to this question yield various responses, depending on a particular viewpoint. From the perspective of a common understanding of recent theories of the origin of birds and their potential precursor (ancestral) animals, then, yes, birds are a kind of dinosaur, having evolved from one or another non-avian dinosaur (Bostwick ...
Ebach, Malte C., Williams, DM
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Mapping the evolution of mitochondrial complex I through structural variation
FEBS Letters, EarlyView.Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin +2 more
wiley +1 more source