Results 21 to 30 of about 6,675,113 (80)

fitdistrplus: An R Package for Fitting Distributions

open access: yes, 2015
The package fitdistrplus provides functions for fitting univariate distributions to different types of data (continuous censored or non-censored data and discrete data) and allowing different estimation methods (maximum likelihood, moment matching ...
M. Delignette-Muller, Christophe Dutang
semanticscholar   +1 more source

New parton distributions for collider physics [PDF]

open access: yes, 2010
We extract new parton distribution functions (PDFs) of the proton by global analysis of hard scattering data in the general-mass framework of perturbative quantum chromodynamics.
H. Lai   +6 more
semanticscholar   +1 more source

Frugivore distributions are associated with plant dispersal syndrome diversity in the Caribbean archipelagos

open access: yesDiversity and Distributions: A journal of biological invasions and biodiversity, 2022
Many plants rely on interactions with frugivores for dispersal, suggesting that animal communities may affect plant occupancy and diversity. However, the contribution of these interaction‐led biotic variables on plant diversity is poorly understood ...
Seok-Kyu Kim   +3 more
semanticscholar   +1 more source

Modelling species distributions and environmental suitability highlights risk of plant invasions in western United States

open access: yesDiversity and Distributions: A journal of biological invasions and biodiversity, 2021
Non‐native invasive plants impact ecosystems globally, and the distributions of many species are expanding. The current and potential distributions of many invaders have not been characterized at the broad scales needed for effective management.
Devin E McMahon   +4 more
semanticscholar   +1 more source

Assessing the uncertainty arising from standard land‐cover mapping procedures when modelling species distributions

open access: yesDiversity and Distributions: A journal of biological invasions and biodiversity, 2022
Habitat loss and degradation is one of the main threats to biodiversity worldwide. Ecological modelling community has been increasingly incorporating habitat changes in the species distribution models (SDMs).
Miguel Cánibe   +3 more
semanticscholar   +1 more source

Rigorous Analytic Solution to the Gravitational-wave Overlapping Event Rates

open access: yesThe Astrophysical Journal
In the era of the next-generation gravitational-wave detectors, signal overlaps will become prevalent due to the high detection rate and long signal duration, posing significant challenges to data analysis. While effective algorithms are being developed,
Ziming Wang, Zexin Hu, Lijing Shao
doaj   +1 more source

Robust joint modelling of sparsely observed paired functional data

open access: yesCanadian Journal of Statistics, Volume 52, Issue 3, Page 734-754, September 2024.
Abstract A reduced‐rank mixed‐effects model is developed for robust modelling of sparsely observed paired functional data. In this model, the curves for each functional variable are summarized using a few functional principal components, and the association of the two functional variables is modelled through the association of the principal component ...
Huiya Zhou, Xiaomeng Yan, Lan Zhou
wiley   +1 more source

Statistical Properties of a Polarization Vector’s Ellipticity Angle

open access: yesThe Astrophysical Journal
The orientation of a polarization vector on the Poincaré sphere is defined by its position angle (PA) and ellipticity angle (EA). The radio emission from pulsars, magnetars, and fast radio bursts can be elliptically polarized, and measurements of the EA ...
M. M. McKinnon
doaj   +1 more source

Stratified learning: A general‐purpose statistical method for improved learning under covariate shift

open access: yesStatistical Analysis and Data Mining: The ASA Data Science Journal, Volume 17, Issue 1, February 2024.
Abstract We propose a simple, statistically principled, and theoretically justified method to improve supervised learning when the training set is not representative, a situation known as covariate shift. We build upon a well‐established methodology in causal inference and show that the effects of covariate shift can be reduced or eliminated by ...
Maximilian Autenrieth   +3 more
wiley   +1 more source

Parton distributions with LHC data [PDF]

open access: yes, 2012
We present the first determination of parton distributions of the nucleon at NLO and NNLO based on a global data set which includes LHC data: NNPDF2.3.
R. Ball   +10 more
semanticscholar   +1 more source

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