نتایج جستجو برای: adaptivetwo stage sequential sampling

تعداد نتایج: 635747  

Journal: :American Journal of Epidemiology 1996

Journal: :Inf. Process. Lett. 1999
Wen-Ping Hwang Ching-Lin Wang

We give two algorithms to randomly permute a linked list of length n in place using O(n logn) time and O(logn) stack space in both the expected case and the worst case. The first algorithm uses well-known sequential random sampling, and the second uses inverted sequential random sampling.  1999 Published by Elsevier Science B.V. All rights reserved.

Journal: :Journal of Machine Learning Research 2011
Martijn R. K. Mes Warren B. Powell Peter I. Frazier

We propose a sequential sampling policy for noisy discrete global optimization and ranking and selection, in which we aim to efficiently explore a finite set of alternatives before selecting an alternative as best when exploration stops. Each alternative may be characterized by a multi-dimensional vector of categorical and numerical attributes and has independent normal rewards. We use a Bayesi...

2016
Benjamin Hébert Michael Woodford

We generalize the rationalize inattention framework proposed by Sims (2010) to allow for cost functions other than Shannon’s mutual information. Unlike other general treatments of the problem, our particular concern is with the additional structure that results when a large number of successive samples of information about the decision situation (each only minimally informative by itself) can b...

2001
Michael D. Lee

A central problem in information retrieval is the automated classification of text documents. While many existing methods achieve good levels of performance, they generally require levels of computation that prevent them from making sufficiently fast decisions in some applied setting. Using insights gained from examining the way humans make fast decisions when classifying text documents, two ne...

Journal: :IEEE Trans. Signal Processing 2003
Zhen Wang Peter Willett

Two new algorithms are presented for the segmentation of a white Gaussian-distributed time series having unknown but piecewise-constant variances. The first “sequential/minimum description length (MDL)” idea includes a rough parsing via the GLR, a penalization of segmentations having too many parts via MDL, and an optional refinement stage. The second “Gibbs sampling” approach is Bayesian and d...

2001
Gang Qian Rama Chellappa

In this paper, we present a new technique for detecting moving targets from image sequences captured by moving sensors. Feature points are detected and tracked through the image sequences. A validity vector is used to describe the consistency of feature trajectories with sensor motion. By using the sequential importance sampling method, an approximation to the posterior distribution of the sens...

2003
Péter Torma Csaba Szepesvári

We consider the task of filtering dynamical systems observed in noise by means of sequential importance sampling when the proposal is restricted to the innovation components of the state. It is argued that the unmodified sequential importance sampling/resampling (SIR) algorithm may yield high variance estimates of the posterior in this case, resulting in poor performance when e.g. in visual tra...

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