Results 21 to 30 of about 9,940 (265)
Truncated control variates for weak approximation schemes*
ESAIM: Proceedings and Surveys, 2017 In this paper we present an enhancement of the regression-based variance reduction approaches recently proposed in Belomestny et al. [1] and [4]. This enhancement is based on a truncation of the control variate and allows for a significant reduction of ...
Belomestny Denis +2 more
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Risk factors for suicidal tendency in people with epilepsy in China: a case–control study
Scientific Reports, 2021 People with epilepsy (PWE) have an increased suicide prevalence. This study aimed to identify the risk factors for suicidal tendency among PWE in West China. A nested case–control study was designed in a cohort of patients with epilepsy (n = 2087).
Mintao Lin +9 more
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Agrointek, 2023 Food adulteration is one of the biggest concerns of quality control. Food adulteration is adding or replacing a product with one or more similar products to increase economic value.
Laila Rahmawati, Hari Hariadi
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On the optimal control for variational inequalities [PDF]
Journal of Optimization Theory and Applications, 1976 We prove an existence theorem for the optimal control of variational inequalities governed by a pseudomonotone operator: the cost is assumed to be quadratic. Then, we give an extension of the theorem to more general costs (assuming the operator to be monotone); we also give a result on a perturbation problem.
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Vector-Valued Control Variates
, 2021 Control variates are variance reduction tools for Monte Carlo estimators. They can provide significant variance reduction, but usually require a large number of samples, which can be prohibitive when sampling or evaluating the integrand is computationally expensive.
Zhuo Sun +2 more
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Effect of Computer-Assisted Instruction on Science Achievement [PDF]
Fanāvarī-i āmūzish, 2010 In this research, the effectiveness of Computer-Assisted Instruction on Academic Achievement of Higher Primary School in Ahwaz City has been surveying. Two hounded students (boys and girls) randomly selected and in each school, two classes (50 students ...
H. Delf Acharsh
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Supervised Machine Learning with Control Variates for American Option Pricing
Foundations of Computing and Decision Sciences, 2018 In this paper, we make use of a Bayesian (supervised learning) approach in pricing American options via Monte Carlo simulations. We first present Gaussian process regression (Kriging) approach for American options pricing and compare its performance in ...
Mu Gang +3 more
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Agronomy, 2023 This study aimed to evaluate the chemical composition of total ration silage (TRS) containing two babassu by-products to replace the corn. The silages were formulated to meet the requirements of sheep for an average daily gain of 200 g/day.
Cledson Sá +13 more
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New-Onset Post-Operative Atrial Fibrillation in Patients Undergoing Coronary Artery Bypass Grafting Surgery - A Retrospective Case-Control Study [PDF]
Brazilian Journal of Cardiovascular Surgery, 2022 Introduction: New-onset postoperative atrial fibrillation (POAF) is a common complication following coronary artery bypass grafting (CABG) surgery. Objective: To explore predictive factors and potential mechanisms of new-onset POAF in isolated off-pump ...
Xuehui Cui +6 more
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A splitting scheme for control variates [PDF]
Operations Research Letters, 1993 The authors give a new control-variate estimator of an unknown expectation parameter \(\theta\). A new proposed splitting scheme lacks the shortcomings of other well known procedures given in the earlier literature. The present results are an unbiased point estimator of \(\theta\), an unbiased variance estimator and an asymptotically exact confidence ...
Athanassios N. Avramidis +1 more
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