Results 41 to 50 of about 7,538,728 (303)

EXACT SIMULATION OF A BOOLEAN MODEL

open access: yesImage Analysis and Stereology, 2013
A Boolean model is a union of independent objects (compact random subsets) located at Poisson points. Two algorithms are proposed for simulating a Boolean model in a bounded domain. The first one applies only to stationary models.
Christian Lantuéjoul
doaj   +1 more source

Annealed importance sampling

open access: yesStatistics and Computing, 2001
Simulated annealing - moving from a tractable distribution to a distribution of interest via a sequence of intermediate distributions - has traditionally been used as an inexact method of handling isolated modes in Markov chain samplers. Here, it is shown how one can use the Markov chain transitions for such an annealing sequence to define an ...
openaire   +3 more sources

Research on Data-Driven Optimal Scheduling of Power System

open access: yesEnergies, 2023
The uncertainty of output makes it difficult to effectively solve the economic security dispatching problem of the power grid when a high proportion of renewable energy generating units are integrated into the power grid.
Jianxun Luo   +4 more
doaj   +1 more source

Importance sampling for multimodal functions and application to pricing exotic options.

open access: yes, 2003
We consider importance sampling (IS) to increase the efficiency of Monte Carlo integration, especially for pricing exotic options where the random input is multivariate Normal.
Avramidis, Athanassios.N.
core   +1 more source

Fourier Analysis of Stochastic Sampling Strategies for Assessing Bias and Variance in Integration [PDF]

open access: yes, 2013
Each pixel in a photorealistic, computer generated picture is calculated by approximately integrating all the light arriving at the pixel, from the virtual scene. A common strategy to calculate these high-dimensional integrals is to average the estimates
Kautz, Jan, Subr, Katric
core   +1 more source

Prototype-based sampling

open access: yes, 2022
A prototype-based sampling method for spatial data sampling and its application in landslide susceptibility mapping 
Prototype-based sampling (14190421)
core   +1 more source

Advantage estimator based on importance sampling

open access: yesTongxin xuebao, 2019
In continuous action tasks,deep reinforcement learning usually uses Gaussian distribution as a policy function.Aiming at the problem that the Gaussian distribution policy function slows down due to the clipped action,an importance sampling advantage ...
Quan LIU, Yubin JIANG, Zhihui HU
doaj   +2 more sources

Capacity Credit Evaluation of Correlated Wind Resources Using Vine Copula and Improved Importance Sampling

open access: yesApplied Sciences, 2019
This paper concentrates on the capacity credit (CC) evaluation of wind energy, where a new method for constructing the joint distribution of wind speed and load is proposed.
Jilin Cai   +3 more
doaj   +1 more source

Support Vector Machine-Assisted Importance Sampling for Optimal Reliability Design

open access: yesApplied Sciences, 2022
A population-based optimization algorithm combining the support vector machine (SVM) and importance sampling (IS) is proposed to achieve a global solution to optimal reliability design.
Chunyan Ling, Jingzhe Lei, Way Kuo
doaj   +1 more source

Importance Sampling Spherical Harmonics [PDF]

open access: yesComputer Graphics Forum, 2009
AbstractIn this paper we present the first practical method for importance sampling functions represented as spherical harmonics (SH). Given a spherical probability density function (PDF) represented as a vector of SH coefficients, our method warps an input point set to match the target PDF using hierarchical sample warping.
Wojciech Jarosz   +2 more
openaire   +2 more sources

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