Results 1 to 10 of about 3,287,971 (240)
Correlation and variable importance in random forests
, 2016 This paper is about variable selection with the random forests algorithm in presence of correlated predictors. In high-dimensional regression or classification frameworks, variable selection is a difficult task, that becomes even more challenging in the ...
Gregorutti, Baptiste +2 more
core +2 more sources
Continuous-variable phase-estimation with unitary and random linear disturbance [PDF]
, 2014 We address the problem of continuous-variable quantum phase estimation in the presence of linear disturbance at the Hamiltonian level, by means of Gaussian probe states.
de Souza, Douglas Delgado +2 more
core +2 more sources
Variable Metric Random Pursuit
, 2014 We consider unconstrained randomized optimization of smooth convex objective functions in the gradient-free setting. We analyze Random Pursuit (RP) algorithms with fixed (F-RP) and variable metric (V-RP).
Gärtner, Bernd +2 more
core +1 more source
Optimization Safety Factors to Study an Ultrasonic Motor [PDF]
International Journal for Simulation and Multidisciplinary Design Optimization, 2010 In this paper, we present a new method based on Optimal Safety Factors (OSF) in the context of the Reliability-Based Design Optimization (RBDO) analysis of ultrasonic motors with traveling wave taking into account the contact between the different ...
Radi Bouchaib +3 more
doaj +1 more source
Variability Measures of Positive Random Variables
PLoS ONE, 2011 During the stationary part of neuronal spiking response, the stimulus can be encoded in the firing rate, but also in the statistical structure of the interspike intervals. We propose and discuss two information-based measures of statistical dispersion of the interspike interval distribution, the entropy-based dispersion and Fisher information-based ...
Lubomir Kostal +2 more
openaire +4 more sources
Cram\'er transform and t-entropy [PDF]
, 2013 t-entropy is the convex conjugate of the logarithm of the spectral radius of a weighted composition operator (WCO). Let $X$ be a nonnegative random variable.
Ostaszewska, Urszula +1 more
core +2 more sources
, 2017 We compare the relation between dispersion and dissipation for two random variables that can be used to characterize the precision of a Brownian clock. The first random variable is the current between states.
Barato, Andre C., Ray, Somrita
core +1 more source
An AUC-based Permutation Variable Importance Measure for Random Forests [PDF]
, 2012 The random forest (RF) method is a commonly used tool for classification with high dimensional data as well as for ranking candidate predictors based on the so-called random forest variable importance measures (VIMs).
A Estabrooks +33 more
core +3 more sources
On free stable distributions [PDF]
, 2014 We investigate the analytical properties of free stable distributions and discover many connections with the classical stable distributions. Our main results include an explicit formula for the Mellin transform, series representations for the ...
Hasebe, Takahiro, Kuznetsov, Alexey
core +3 more sources
Total positivity and dependence of order statistics
AIMS Mathematics, 2023 In this comprehensive study, we delve deeply into the concept of multivariate total positivity, defining it in accordance with a direction. We rigorously explore numerous salient properties, shedding light on the nuances that characterize this notion ...
Enrique de Amo +2 more
doaj +1 more source