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作者:Shi, Ce; Tang, Yu; Yin, Jianxing
作者单位:Soochow University - China
摘要:As a type of search design, a detecting array can be used to generate test suites to identify and detect faults caused by interactions of factors in a component-based system. Recently, the construction and optimality of detecting arrays have been investigated in depth in the case where all the factors are assumed to have the same number of levels. However, for real world applications, it is more desirable to use detecting arrays in which the various factors may have different numbers of levels...
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作者:Lockhart, Richard; Taylor, Jonathan; Tibshirani, Ryan J.; Tibshirani, Robert
作者单位:Simon Fraser University; Stanford University; Carnegie Mellon University; Stanford University
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作者:Bailey, R. A.; Druilhet, P.
作者单位:University of London; Queen Mary University London; University of St Andrews; Universite Clermont Auvergne (UCA)
摘要:We consider repeated measurement designs when a residual or carry-over effect may be present in at most one later period. Since assuming an additive model may be unrealistic for some applications and leads to biased estimation of treatment effects, we consider a model with interactions between carryover and direct treatment effects. When the aim of the experiment is to study the effects of a treatment used alone, we obtain universally optimal approximate designs. We also propose some efficient...
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作者:Binev, Peter; Cohen, Albert; Dahmen, Wolfgang; DeVore, Ronald
作者单位:University of South Carolina System; University of South Carolina Columbia; Sorbonne Universite; Universite Paris Cite; Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute for Mathematical Sciences (INSMI); RWTH Aachen University; Texas A&M University System; Texas A&M University College Station
摘要:Algorithms for binary classification based on adaptive tree partitioning are formulated and analyzed for both their risk performance and their friendliness to numerical implementation. The algorithms can be-viewed as generating a set approximation to the Bayes set and thus fall into the general category of set estimators. In contrast with the most studied tree-based algorithms, which utilize piecewise constant approximation on the generated partition [IEEE Trans. Inform. Theory 52 (2006) 1335-...
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作者:Schervish, M. J.; Seidenfeld, Teddy; Kadane, J. B.
作者单位:Carnegie Mellon University; Carnegie Mellon University
摘要:We investigate differences between a simple Dominance Principle applied to sums of fair prices for variables and dominance applied to sums of forecasts for variables scored by proper scoring rules. In particular, we consider differences when fair prices and forecasts correspond to finitely additive expectations and dominance is applied with infinitely many prices and/or forecasts.
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作者:Li, Ke
作者单位:International Business Machines (IBM); IBM USA; Massachusetts Institute of Technology (MIT); National University of Singapore
摘要:In the asymptotic theory of quantum hypothesis testing, the minimal error probability of the first kind jumps sharply from zero to one when the error exponent of the second kind passes by the point of the relative entropy of the two states in an increasing way. This is well known as the direct part and strong converse of quantum Stein's lemma. Here we look into the behavior of this sudden change and have make it clear how the error of first kind grows smoothly according to a lower order of the...
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作者:Bertsimas, Dimitris; Mazumder, Rahul
作者单位:Massachusetts Institute of Technology (MIT); Massachusetts Institute of Technology (MIT); Columbia University
摘要:We address the Least Quantile of Squares (LQS) (and in particular the Least Median of Squares) regression problem using modern optimization methods. We propose a Mixed Integer Optimization (MIO) formulation of the LQS problem which allows us to find a provably global optimal solution for the LQS problem. Our MIO framework has the appealing characteristic that if we terminate the algorithm early, we obtain a solution with a guarantee on its sub-optimality. We also propose continuous optimizatio...
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作者:Pazman, Andrej; Pronzato, Luc
作者单位:Comenius University Bratislava; Centre National de la Recherche Scientifique (CNRS); Universite Cote d'Azur
摘要:Among the major difficulties that one may encounter when estimating parameters in a nonlinear regression model are the nonuniqueness of the estimator, its instability with respect to small perturbations of the observations and the presence of local optimizers of the estimation criterion. We show that these estimability issues can be taken into account at the design stage, through the definition of suitable design criteria. Extensions of E-, c- and G-optimality criteria are considered, which wh...
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作者:Fan, Jianqing; Xue, Lingzhou; Zou, Hui
作者单位:Princeton University; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; University of Minnesota System; University of Minnesota Twin Cities
摘要:Folded concave penalization methods have been shown to enjoy the strong oracle property for high-dimensional sparse estimation. However, a folded concave penalization problem usually has multiple local solutions and the oracle property is established only for one of the unknown local solutions. A challenging fundamental issue still remains that it is not clear whether the local optimum computed by a given optimization algorithm possesses those nice theoretical properties. To close this importa...
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作者:Cai, T. Tony; Yuan, Ming
作者单位:University of Pennsylvania; University of Wisconsin System; University of Wisconsin Madison