نتایج جستجو برای: risk criterion
تعداد نتایج: 1014579 فیلتر نتایج به سال:
We study zero-sum stochastic games for controlled discrete time Markov chains with risk-sensitive average cost criterion countable/compact state space and Borel action spaces. The payoff function is nonnegative possibly unbounded countable case compact it a real-valued bounded function. For case, under certain Lyapunov type stability assumption on the dynamics we establish existence of value sa...
Statistical learning theory provides a formal criterion for learning a concept from examples. This theory addresses directly the tradeoff in empirical fit and generalization. In practice, this leads to the structural risk minimization principle where one minimizes a bound on the overall risk functional. For learning linear discriminant functions, this bound is impacted by the minimum of two ter...
In this paper, 1 we propose a novel loss function for the overall risk criterion estimation of hidden Markov models. For continuous speech recognition, the overall risk criterion estimation with the proposed loss function aims to directly maximise word recognition accuracy on the training database. We propose reestimation equations for the HMM parameters, which are derived using the Extended Ba...
Mallows’ Cp statistic is widely used for selecting multivariate linear regression models. It can be considered to be an estimator of a risk function based on an expected standardized mean square error of prediction. Fujikoshi and Satoh (1997) have proposed an unbiased Cp criterion (called modified Cp; MCp) for selecting multivariate linear regression models. In this paper, the unbiased Cp crite...
OBJECTIVE To determine the effect of lowering the fasting plasma glucose (FPG) criterion for impaired fasting glucose (IFG) on the prevalence of IFG, the risks of diabetes, and cardiovascular disease (CVD) associated with IFG. RESEARCH DESIGN AND METHODS Three studies were used: 1). the 1998 National Health Survey (NHS98), a randomly selected cross-sectional sample of 4723 subjects; 2). the S...
BACKGROUND There is considerable controversy regarding the diagnosis of Acute Kidney Injury (AKI), and there are over 30 different definitions. OBJECTIVE To evaluate the incidence and risk factors for the development of AKI following cardiac surgery according to the RIFLE, AKIN and KDIGO criteria, and compare the prognostic power of these criteria. METHODS Cross-sectional study that include...
The main purpose of this study is to provide three simulation-based risk management models for optimal placement of wind turbines in Khodabandeh city (located in the south of Zanjan province) taking into account the wake effect and uncertainty in wind speed and direction. For this purpose, wind speed and direction data were collected, then wind speed and direction uncertainty was modeled by Mon...
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