نتایج جستجو برای: importance

تعداد نتایج: 391858  

2003
Diego Andina Santiago Torres-Alegre Antonio Vega-Corona Antonio Álvarez-Vellisco

This chapter is dedicated to scope of the application of Importance Sampling Techniques to the design phase of Neyman-Pearson Neural Detectors. This phase usually requires the application of MonteCarlo trials in order to estimate some performance parameters. The classical Monte-Carlo method is suitable to estimate high event probabilities but not suitable to estimate very low event probabilitie...

Journal: :CoRR 2017
Zhiyuan Huang Ding Zhao Henry Lam David J. LeBlanc

The process to certify highly Automated Vehicles has not yet been defined by any country in the world. Currently, companies test Automated Vehicles on public roads, which is time-consuming and inefficient. We proposed the Accelerated Evaluation concept, which uses a modified statistics of the surrounding vehicles and the Importance Sampling theory to reduce the evaluation time by several orders...

Journal: :CoRR 2017
Zhaohan Daniel Guo Philip S. Thomas Emma Brunskill

Evaluating a policy by deploying it in the real world can be risky and costly. Off-policy evaluation (OPE) algorithms use historical data collected from running a previous policy to evaluate a new policy, which provides a means for evaluating a policy without requiring it to ever be deployed. Importance sampling is a popular OPE method because it is robust to partial observability and works wit...

2008
Vibhav Gogate Rina Dechter

The paper introduces AND/OR importance sampling for probabilistic graphical models. In contrast to importance sampling, AND/OR importance sampling caches samples in the AND/OR space and then extracts a new sample mean from the stored samples. We prove that AND/OR importance sampling may have lower variance than importance sampling; thereby providing a theoretical justification for preferring it...

2000
Ad Ridder

This paper describes a discrete-time retrial queue and shows how importance sampling simulations can be applied for estimating the probability of large orbit content and the overflow fraction of primary calls.

2003
Jaco Vermaak Simon J. Godsill Arnaud Doucet

We propose a method for sequential Bayesian kernel regression. As is the case for the popular Relevance Vector Machine (RVM) [10, 11], the method automatically identifies the number and locations of the kernels. Our algorithm overcomes some of the computational difficulties related to batch methods for kernel regression. It is non-iterative, and requires only a single pass over the data. It is ...

2001
Qing Xu Jizhou Sun Zunce Wei Yantai Shu Stefano Messelodi Jing Cai

2008
Tatiana S. Zaburnenko Pieter-Tjerk de Boer Boudewijn R.H.M. Haverkort

In this paper we extend previously proposed state-dependent importance sampling heuristics for simulation of population overflow in Markovian tandem queuing networks to nonMarkovian tandem networks, and experimentally demonstrate the asymptotic efficiency of the resulting heuristics.

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