Results 71 to 80 of about 6,285,799 (375)

Unsupervised Extremely Randomized Trees [PDF]

open access: yes, 2018
In this paper we present a method to compute dissimilarities on unlabeled data, based on extremely randomized trees. This method, Unsupervised Extremely Randomized Trees, is used jointly with a novel randomized labeling scheme we describe here, and that we call AddCl3.
Dalleau, Kevin   +2 more
openaire   +2 more sources

Local extrema in random trees

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
The number of local maxima (resp., local minima) in a tree T∈𝒯n rooted at r∈[n] is denoted by Mr(T) (resp., by mr(T)). We find exact formulas as rational functions of n for the expectation and variance of M1(T) and mn(T) when T∈𝒯n is chosen randomly ...
Lane Clark
doaj   +1 more source

Spatial patterns and intra-specific competition of Chestnut-leaved oak (Quercus castaneifolia C. A. Mey.) using O- ring statistic (Case study: Neka Forest, Iran) [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2015
The spatial patterns of trees in different stages of their life provide important information related to forest regeneration and succession processes.
Farideh Omidvar Hosseini   +3 more
doaj   +1 more source

Identification of Pasture Degradation Using Remote Sensing Data and Machine Learning: A Case Study of Obichnik

open access: yesApplied Sciences
The degradation of pastures and meadows is a global problem with a wide range of impacts. It affects farmers in different ways, such as decreases in cattle production, milk yield, and forage quality. Still, it also has other side effects, such as loss of
Boris Evstatiev   +12 more
doaj   +1 more source

Rooted trees and moments of large sparse random matrices [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2003
In these expository paper we describe the role of the rooted trees as a base for convenient tools in studies ofrandom matrices. Regarding the Wigner ensemble of random matrices, we represent main ingredients ofthis approach.
Oleksiy Khorunzhiy
doaj   +1 more source

Burning random trees

open access: yesElectronic Communications in Probability
11 ...
Devroye, Luc   +2 more
openaire   +2 more sources

Random environment on coloured trees

open access: yes, 2007
In this paper, we study a regular rooted coloured tree with random labels assigned to its edges, where the distribution of the label assigned to an edge depends on the colours of its endpoints.
Menshikov, Mikhail   +2 more
core   +3 more sources

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS 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

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Random Planar Lattices and Integrated SuperBrownian Excursion [PDF]

open access: yes, 2002
In this paper, a surprising connection is described between a specific brand of random lattices, namely planar quadrangulations, and Aldous' Integrated SuperBrownian Excursion (ISE).
A Dembo   +18 more
core   +5 more sources

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