Results 231 to 240 of about 384,701 (284)
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Zeitschrift f�r Wahrscheinlichkeitstheorie und Verwandte Gebiete, 1963
Let y 1,y 2, … be a sequence of random variables with a given joint distribution. Assume that we can observe the y’s sequentially but that we must stop some time, and that if we stop with yn we will receive a payoff x n = f n(y 1, …, y n). What stopping rule will maximize the expected value of the payoff?
Chow, Y. S., Robbins, H.
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Let y 1,y 2, … be a sequence of random variables with a given joint distribution. Assume that we can observe the y’s sequentially but that we must stop some time, and that if we stop with yn we will receive a payoff x n = f n(y 1, …, y n). What stopping rule will maximize the expected value of the payoff?
Chow, Y. S., Robbins, H.
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Lottery Stocks and Stop-loss Rules
SSRN Electronic Journal, 2021We show that stop-loss rules increase the returns to investment in stocks with lottery features. These stocks, which are popular with individual investors, typically have sporadic big gains and frequent small losses. However, stop-loss rules can reduce losses and allow investors to receive the gains from large price increases.
Bochuan Dai +3 more
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Moments of Some Stopping Rules
Journal of the London Mathematical Society, 1998zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Teicher, Henry, Zhang, Cun-Hui
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Stopping rules for clinical trials
Statistics in Medicine, 1983AbstractWe describe a new method of formulating stopping rules for clinical trials, one that incorporates opinion on what difference is clinically important. We compare the method with conventional group sequential designs and illustrate it by application to a study of Pancuronium Bromide for prevention of haemorrhage in pre‐term infants.
L S, Freedman, D, Lowe, P, Macaskill
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Stopping rules for proofreading
Journal of Applied Probability, 1989A manuscript with an unknown random numberMof misprints is subjected to a series of proofreadings in an effort to detect and correct the misprints. On thenthproofreading, each remaining misprint is detected independently with probabilitypn– 1. Each proofreading costs an amountCP> 0, and if one stops afternproofreadings, each misprint overlooked ...
Ferguson, T. S., Hardwick, J. P.
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Optimal multivariate stopping rules
Journal of Applied Probability, 1998For fixediletX(i) = (X1(i), …,Xd(i)) be ad-dimensional random vector with some known joint distribution. Hereishould be considered a time variable. LetX(i),i= 1, …,nbe a sequence ofnindependent vectors, wherenis the total horizon. In many examplesXj(i) can be thought of as the return to partnerj, when there ared≥ 2 partners, and one stops with theith ...
Assaf, David, Samuel-Cahn, Ester
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Two-Stage Clinical Trial Stopping Rules
Biometrics, 1984Two-stage stopping rules for clinical trials are considered. The nominal significance level needed for the second-stage test, for any choice of first-stage significance level, is derived for rules with overall significance levels of .01 and .05 and for studies with either half or two-thirds of the patients analyzed in the first stage.
J D, Elashoff, T J, Reedy
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Primary Teacher Update, 2013
Correct use of punctuation means a lot to remember. Elizabeth Aitken suggests a balanced approach – ‘rules’ can be broken but children need to know them first!
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Correct use of punctuation means a lot to remember. Elizabeth Aitken suggests a balanced approach – ‘rules’ can be broken but children need to know them first!
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Sequential Stopping Rules for Species Accumulation
Journal of Agricultural, Biological & Environmental Statistics, 2003Identifying and counting the total number of biological species observed to date, and plotting versusa measure of the effort used to record them, gives rise to a species accumulation curve. Interest typically is concerned with estimating the total number of species in the area of study, having observed only the accumulation curve, having no information
J. Andrés Christen, Miguel Nakamura
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When Stopping Rules Don't Stop [PDF]
, 2015 Performing ranked retrieval on large document collections can be slow. The method of stopping rules has been proposed to make it more efficient. Stopping rules, which terminate search when the highest ranked documents have been determined to some degree of likelihood, are attractive and have proven useful in clustering, but have not worked well in ...
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