Results 11 to 20 of about 2,751,336 (281)

Estimation of Distribution Overlap of Urn Models [PDF]

open access: yes, 2012
A classical problem in statistics is estimating the expected coverage of a sample, which has had applications in gene expression, microbial ecology, optimization, and even numismatics.
Hampton, Jerrad, Lladser, Manuel E.
core   +4 more sources

Posterior contraction rates for support boundary recovery [PDF]

open access: yes, 2020
Given a sample of a Poisson point process with intensity $\lambda_f(x,y) = n \mathbf{1}(f(x) \leq y),$ we study recovery of the boundary function $f$ from a nonparametric Bayes perspective.
Reiss, Markus, Schmidt-Hieber, Johannes
core   +3 more sources

Functional Calibration under Non-Probability Survey Sampling

open access: yes, 2022
Non-probability sampling is prevailing in survey sampling, but ignoring its selection bias leads to erroneous inferences. We offer a unified nonparametric calibration method to estimate the sampling weights for a non-probability sample by calibrating functions of auxiliary variables in a reproducing kernel Hilbert space.
Wang, Zhonglei   +2 more
openaire   +2 more sources

Non-commutative probability and non-commutative processes

open access: yes, 2019
A probability space is a pair ($\mathcal{A},\phi $) where $\mathcal{A}$ is an algebra and $\phi $ a state on the algebra. In classical probability $\mathcal{A}$ is the algebra of linear combinations of indicator functions on the sample space and in ...
Mendes, R. Vilela
core   +1 more source

Impairment losses: causes and impacts [PDF]

open access: yes, 2016
Purpose - To analyze recognition of impairment losses in tangible and intangible assets, and their relevance to investors in companies listed in the Lisbon and Madrid Stock Exchange (2007-2011).Methodology - Quantitative analysis of a panel data sample ...
Fernandes, Joaquim Santana   +3 more
core   +3 more sources

External validity & non-probability sampling

open access: yesIndian Journal of Medical Research, 2015
Sir, Apropos of the article on determinants of Indian physicians satisfaction and dissatisfaction from their job published recently1, the authors deserve credit for their efforts. As the title and the conclusions suggest, the aim was to study the job satisfaction and dissatisfaction levels among Indian physicians and compare it with levels across ...
openaire   +2 more sources

Interplay between pairing and exchange in small metallic dots

open access: yes, 2002
We study the effects of the mesoscopic fluctuations on the competition between exchange and pairing interactions in ultrasmall metallic dots when the mean level spacing is comparable or larger than the BCS pairing energy.
A. Di Lorenzo   +24 more
core   +1 more source

Does student proactivity guarantee positive academic results? [PDF]

open access: yes, 2018
This paper analyzes the impact of students’ proactivity on academic performance based on a sample from students enrolled in an introductory course of Political Economy at the University of Seville (Spain) in three consecutive courses (2014–2015, 2015 ...
Cansino Muñoz-Repiso, José Manuel   +2 more
core   +2 more sources

On the phase transition of the 3D random field Ising model [PDF]

open access: yes, 2014
We present numerical simulations of the random field Ising model in three dimensions at zero temperature. The critical exponents are found to agree with previous results.
Picco, Marco, Sourlas, Nicolas
core   +1 more source

Path probability distribution of stochastic motion of non dissipative systems: a classical analog of Feynman factor of path integral

open access: yes, 2013
We investigate, by numerical simulation, the path probability of non dissipative mechanical systems undergoing stochastic motion. The aim is to search for the relationship between this probability and the usual mechanical action.
Bi, W. P.   +6 more
core   +1 more source

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