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Double Conditional Expectation 被引量:3
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作者 HU Di-he 《Wuhan University Journal of Natural Sciences》 CAS 2004年第6期851-857,共7页
The concept of double conditional expectation is introduced.A series of properties for the double conditional expectation are obtained several convergence theorems and Jensen inequality are proved.Finally we discuss t... The concept of double conditional expectation is introduced.A series of properties for the double conditional expectation are obtained several convergence theorems and Jensen inequality are proved.Finally we discuss the special cases and application for double conditional expectation. 展开更多
关键词 double conditional expectation covergence theorem Jensen inequality branching chain in random environment
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L_p-CONTINUITY OF NONCOMMUTATIVE CONDITIONAL EXPECTATIONS
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作者 胡建 马聪变 侯友良 《Acta Mathematica Scientia》 SCIE CSCD 2015年第5期995-1002,共8页
Let (M,τ) be a noncommutative probability space, (Mn)n≥l a sequence of von Neumann subalgebras of M and N a von Neumann subalgebra of M. We introduce the notions of It-approach and orthogonal approach for (Mn)... Let (M,τ) be a noncommutative probability space, (Mn)n≥l a sequence of von Neumann subalgebras of M and N a von Neumann subalgebra of M. We introduce the notions of It-approach and orthogonal approach for (Mn)n≥1 and prove that ε(x|Mn)Lp→ε(x|N) for any x ∈ Lp(M) (1 ≤ p 〈 ∞) if and only if (Mn)n≥1 τ-approaches and orthogonally approaches N. 展开更多
关键词 von Neumann algebra TRACE conditional expectation orthogonal approach
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THE OPTIMALITY CONDITIONS OF NONCONVEXSET-VALUED VECTOR OPTIMIZATION 被引量:2
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作者 盛保怀 刘三阳 《Acta Mathematica Scientia》 SCIE CSCD 2002年第1期47-55,共9页
The concepts of alpha-order Clarke's derivative, alpha-order Adjacent derivative and alpha-order G.Bouligand derivative of set-valued mappings are introduced, their properties are studied, with which the Fritz Joh... The concepts of alpha-order Clarke's derivative, alpha-order Adjacent derivative and alpha-order G.Bouligand derivative of set-valued mappings are introduced, their properties are studied, with which the Fritz John optimality condition of set-valued vector optimization is established. Finally, under the assumption of pseudoconvexity, the optimality condition is proved to be sufficient. 展开更多
关键词 set-valued derivative optimality condition pseudoconvex set-valued mapping
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ON THE GENERALIZED FRITZ JOHN OPTIMALITY CONDITIONS OF VECTOR OPTIMIZATION WITH SET-VALUED MAPS UNDER BENSON PROPER EFFICIENCY 被引量:3
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作者 盛宝怀 刘三阳 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2002年第12期1444-1451,共8页
A kind of tangent derivative and the concepts of strong and weak * pseudoconvexity for a set-valued map are introduced. By the standard separation theorems of the convex sets and cones the optimality Fritz John condit... A kind of tangent derivative and the concepts of strong and weak * pseudoconvexity for a set-valued map are introduced. By the standard separation theorems of the convex sets and cones the optimality Fritz John condition of set-valued optimization under Benson proper efficiency is established, its sufficience is discussed. The form of the optimality conditions obtained here completely tally with the classical results when the set-valued map is specialized to be a single-valued map. 展开更多
关键词 contingent tangent cone set-valued map Benson proper efficiency Fritz John condition
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KUHN-TUCKER CONDITION AND WOLFE DUALITY OF PREINVEX SET-VALUED OPTIMIZATION 被引量:2
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作者 盛宝怀 刘三阳 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2006年第12期1655-1664,共10页
The optimality Kuhn-Tucker condition and the wolfe duality for the preinvex set-valued optimization are investigated. Firstly, the concepts of alpha-order G-invex set and the alpha-order S-preinvex set-valued function... The optimality Kuhn-Tucker condition and the wolfe duality for the preinvex set-valued optimization are investigated. Firstly, the concepts of alpha-order G-invex set and the alpha-order S-preinvex set-valued function were introduced, from which the properties of the corresponding contingent cone and the alpha-order contingent derivative were studied. Finally, the optimality Kuhn-Tucker condition and the Wolfe duality theorem for the alpha-order S-preinvex set-valued optimization were presented with the help of the alpha-order contingent derivative. 展开更多
关键词 preinvex set-valued function contingent epiderivatives optimality conditions DUALITY
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Higher-order Optimality Conditions for Henig Effcient Solution in Set-valued Optimization under Cone-convexlike Maps
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作者 ZHANG Jian WANG Qi-lin 《Chinese Quarterly Journal of Mathematics》 CSCD 2011年第3期415-419,共5页
This paper deals with higher-order optimality conditions for Henig effcient solutions of set-valued optimization problems.By virtue of the higher-order tangent sets, necessary and suffcient conditions are obtained for... This paper deals with higher-order optimality conditions for Henig effcient solutions of set-valued optimization problems.By virtue of the higher-order tangent sets, necessary and suffcient conditions are obtained for Henig effcient solutions of set-valued optimization problems whose constraint condition is determined by a fixed set. 展开更多
关键词 higher-order contingent(adjacent)set Henig effcient solutions higher-order optimality conditions set-valued optimization
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OPTIONAL AND PREDICTABLE PROJECTIONS OF SET-VALUED MEASURABLE PROCESSES
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作者 Wang Rongmingof Statistcs,East China Normal Univ.,Shanghai 200062. 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2001年第3期323-329,共7页
In this paper,the optional and predictable projections of set-valued measurable processes are studied.The existence and uniqueness of optional and predictable projections of set-valued measurable processes are proved ... In this paper,the optional and predictable projections of set-valued measurable processes are studied.The existence and uniqueness of optional and predictable projections of set-valued measurable processes are proved under proper circumstances. 展开更多
关键词 set-valued conditional expectation essential(convex)closure optional projection predictable projection measurable processes.
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CONE-DIRECTED CONTINGENT DERIVATIVES AND GENERALIZED PREINVEX SET-VALUED OPTIMIZATION 被引量:10
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作者 丘京辉 《Acta Mathematica Scientia》 SCIE CSCD 2007年第1期211-218,共8页
By using cone-directed contingent derivatives, the unified necessary and sufficient optimality conditions are given for weakly and strongly minimal elements respectively in generalized preinvex set-valued optimization.
关键词 Preinvex set-valued optimization cone-directed contingent derivative optimality conditions
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Generalized cone-subconvexlike set-valued maps and applications to vector optimization 被引量:1
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作者 黄永伟 HUANG Yongwei 《Journal of Chongqing University》 CAS 2002年第2期67-71,共5页
The definitions of cone-subconvexlike set-valued maps and generalized cone-subconvexlike set-valued maps in topological vector spaces are defined by using the relative interiors of ordering cone. The relationships bet... The definitions of cone-subconvexlike set-valued maps and generalized cone-subconvexlike set-valued maps in topological vector spaces are defined by using the relative interiors of ordering cone. The relationships between the two classes of set-valued maps are investigated, and some properties of them are shown. A Gordan type alternative theorem under the assumption of generalized cone-subconvexlikeness of set-valued maps is proved by applying convex separation theorems involving the relative interiors in infinite dimensional spaces. Finally a necessary optimality condition theorem is shown for a general kind of set-valued vector optimization in a sense of weak E-minimizer. 展开更多
关键词 relative interiors generalized cone-subconvexlikeness set-valued vector optimization optimality conditions weak E-minimizer.
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An Upper Bound for Conditional Second Moment of the Solution of a SDE
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作者 Andriy Yurachkivsky 《Applied Mathematics》 2013年第1期135-143,共9页
Let be a filtration on some probability space and let denote the class of all -adapted -valued stochastic processes M such that for all t>s≥0 and the process is continuous (the conditional expectations are extende... Let be a filtration on some probability space and let denote the class of all -adapted -valued stochastic processes M such that for all t>s≥0 and the process is continuous (the conditional expectations are extended, so we do not demand that . It is shown that each is a locally square integrable martingale w. r. t. . Let X be the strong solution of the equation where , t is a continuous increasing process with -measurable values at all times, and Q is an -valued random function on , continuous in and -progressive at fixed x. Suppose also that there exists an -measurable in nonnegative random process Ψ such that, for all Then 展开更多
关键词 conditional expectation MARTINGALE Stochastic EQUATION
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Optimization of Generator Based on Gaussian Process Regression Model with Conditional Likelihood Lower Bound Search
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作者 Xiao Liu Pingting Lin +2 位作者 Fan Bu Shaoling Zhuang Shoudao Huang 《CES Transactions on Electrical Machines and Systems》 EI CSCD 2024年第1期32-42,共11页
The noise that comes from finite element simulation often causes the model to fall into the local optimal solution and over fitting during optimization of generator.Thus,this paper proposes a Gaussian Process Regressi... The noise that comes from finite element simulation often causes the model to fall into the local optimal solution and over fitting during optimization of generator.Thus,this paper proposes a Gaussian Process Regression(GPR)model based on Conditional Likelihood Lower Bound Search(CLLBS)to optimize the design of the generator,which can filter the noise in the data and search for global optimization by combining the Conditional Likelihood Lower Bound Search method.Taking the efficiency optimization of 15 kW Permanent Magnet Synchronous Motor as an example.Firstly,this method uses the elementary effect analysis to choose the sensitive variables,combining the evolutionary algorithm to design the super Latin cube sampling plan;Then the generator-converter system is simulated by establishing a co-simulation platform to obtain data.A Gaussian process regression model combing the method of the conditional likelihood lower bound search is established,which combined the chi-square test to optimize the accuracy of the model globally.Secondly,after the model reaches the accuracy,the Pareto frontier is obtained through the NSGA-II algorithm by considering the maximum output torque as a constraint.Last,the constrained optimization is transformed into an unconstrained optimizing problem by introducing maximum constrained improvement expectation(CEI)optimization method based on the re-interpolation model,which cross-validated the optimization results of the Gaussian process regression model.The above method increase the efficiency of generator by 0.76%and 0.5%respectively;And this method can be used for rapid modeling and multi-objective optimization of generator systems. 展开更多
关键词 Generator optimization Gaussian Process Regression(GPR) conditional Likelihood Lower Bound Search(CLLBS) Constraint improvement expectation(CEI) Finite element calculation
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Transmission Based Conditional Logistic Model for Testing Main and Interaction Effects
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作者 Caixia Li Peixing Li 《Open Journal of Statistics》 2021年第5期713-719,共7页
Transmission disequilibrium test (TDT) is a popular family based genetic association method. Under multiplicative assumption, a conditional logistic regression for matched pair, affected offspring with allele transmit... Transmission disequilibrium test (TDT) is a popular family based genetic association method. Under multiplicative assumption, a conditional logistic regression for matched pair, affected offspring with allele transmitted from parents and pseudo-offspring (control) with allele non-transmitted from parents, was built to detect the <span style="font-family:Verdana;">main </span><span style="font-family:Verdana;">effects of genes and gene-covariate interaction</span><span style="font-family:Verdana;">s</span><span style="font-family:;" "=""><span style="font-family:Verdana;">. When there exist genotype uncertainties, expectation-maximization (EM) algorithm was adopted to estimate the coefficients. The transmission model was applied to detect the association between M235T polymorphism in AGT gene and essential hypertension (ESH). Most of parents are not available in the 126 families from HongKong Chinese population. The results </span><span style="font-family:Verdana;">showed M235T is associat</span></span><span style="font-family:Verdana;">ed</span><span style="font-family:Verdana;"> with hypertension and there is interaction between M235T and the case’s sex. The allele T is higher risk for male than female</span><span style="font-family:Verdana;">.</span> 展开更多
关键词 Transmission Disequilibrium Test Gene-Covariate Interaction conditional Logistic Model expectation-Maximization Algorithm
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A REMARK ON CONDITIONAL EXPECTATIONS
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作者 严加安 《Chinese Science Bulletin》 SCIE CAS 1990年第9期719-722,共4页
Let(Ω, J, P) be a probability space and э be a sub a-algebra of J. It is well known that for any non-negative J-measurable function X one can define the conditional expectation E[X[(?)] of X given (?). Therefore it ... Let(Ω, J, P) be a probability space and э be a sub a-algebra of J. It is well known that for any non-negative J-measurable function X one can define the conditional expectation E[X[(?)] of X given (?). Therefore it is natural to pose the following general definition of the conditional expectation. 展开更多
关键词 GENERALIZED conditional expectation Jensen’s inequality.
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ON CONDITIONAL EXPECTATION OPERATORS ON L(μ,X)(1≤p≤+∞,p≠2)
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作者 那啟元 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 1990年第4期403-409,共7页
Some characterizations of the conditional expectation operators on Lebesgue-Bochnerspaces L_p(μ,X)are given,where 1≤p【∞,p≠2.Also an example is given to show thatthe characterizations of the conditional expectatio... Some characterizations of the conditional expectation operators on Lebesgue-Bochnerspaces L_p(μ,X)are given,where 1≤p【∞,p≠2.Also an example is given to show thatthe characterizations of the conditional expectation operators on L_p(μ,X)are differentfrom that on L_p(μ)_z Finally,a representation of the constant-preserving contractiveprojection on spaces L_p(μ,X)is got when 0【p【1. 展开更多
关键词 preserving expectation OPERATORS Radon conditional LEBESGUE UNIFORMLY GENERA 即夕 田滋
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Optimality conditions in set optimization employing higher-order radial derivatives
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作者 YU Guo-lin 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2017年第2期225-236,共12页
There are two approaches of defining the solutions of a set-valued optimization problem: vector criterion and set criterion. This note is devoted to higher-order optimality conditions using both criteria of solutions... There are two approaches of defining the solutions of a set-valued optimization problem: vector criterion and set criterion. This note is devoted to higher-order optimality conditions using both criteria of solutions for a constrained set-valued optimization problem in terms of higher-order radial derivatives. In the case of vector criterion, some optimality conditions are derived for isolated (weak) minimizers. With set criterion, necessary and sufficient optimality conditions are established for minimal solutions relative to lower set-order relation. 展开更多
关键词 higher-order radial derivative optimality conditions set-valued optimization vector criterion set criterion.
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Study of the Conditions of Formation and Forecast of the Perspective Areas of Hydrogen-Sulfide Water of Surkhandarya Depression
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作者 Rakhimjan Abdurazakovich Umurzakov Muzaffar Rakhmatovich Zhuraev Rustam Yunusovich Yusupov 《Open Journal of Geology》 2019年第4期213-225,共13页
Increase in requirement of hydrosulphuric water for improvement of the population set the task of identification of places of their possible congestion for hydrogeological service. Earlier detection of such congestion... Increase in requirement of hydrosulphuric water for improvement of the population set the task of identification of places of their possible congestion for hydrogeological service. Earlier detection of such congestions was accidental at well-drilling of different function. Therefore, development of new methodical approaches of search and allocation of perspective zones of their formation was required. It was for this purpose necessary to study in what conditions and what factors have an impact on formation of underground hydrosulphuric water. So far, definition of communication attempts only with separate geochemical signs was known. Results of studying of influence on formations of hydrosulphuric water of such factors as lithologic and facial in combination with oil-and-gas content, the geological and structural and hydrodynamic mode are given in this work. It is established that the main sign for formation of hydrosulphuric water is existence of evaporite thickness and hydrocarbon congestions. Besides, it is shown that small depth (up to 2 km) of their bedding has to be an indispensable condition and existence of explosive violation on which there has to be a water infiltration (a geological and structural factor). In the Surkhandarya region, the hydrodynamic mode caused by inclined bedding of aquifers was also one of essential factors. Active water is an exchange process with washing away (oxidation) sulfate of the containing thicknesses and subsequently, its restoration in interaction with hydrocarbons with formation of hydrosulphuric water is described. The technique is developed and the expected card of perspective zones of formation of hydrosulphuric water is constructed. 展开更多
关键词 Hydrosulfuric WATER Oil and Gas Complexes FORMATION conditIONS Factor Lithologic FACIES Geostructural Hydrodynamics of Ground WATER expectED Map
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仿生嗅觉传感技术及在电力设备状态检测中的应用前景综述 被引量:4
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作者 段大鹏 盛戈皞 +3 位作者 任志刚 刘若溪 桂媛 王羽 《高压电器》 北大核心 2025年第1期1-11,共11页
电气设备的安全运行对电力系统的稳定性十分重要。近年来,仿生嗅觉传感技术是国内外研究的热点,仿生嗅觉传感技术已经成功应用于食品检验、检疫、搜救等领域。该技术也可以用于检测电气设备的缺陷或故障,通过检测电气设备金属导体及气... 电气设备的安全运行对电力系统的稳定性十分重要。近年来,仿生嗅觉传感技术是国内外研究的热点,仿生嗅觉传感技术已经成功应用于食品检验、检疫、搜救等领域。该技术也可以用于检测电气设备的缺陷或故障,通过检测电气设备金属导体及气、液或固态绝缘介质散发出的特有气味分子,进而识别设备的缺陷或故障,并可以同时联合视觉与听觉进行诊断分析。文中首先概述了仿生嗅觉传感技术的发展历程,阐述了三代仿生嗅觉传感技术的原理、技术特征和研究进展,并对其应用场景和发展方向进行了探讨。其次,从气、液、固3种状态绝缘介质的故障识别角度,对当前电力设备中的气体检测技术进行了总结与分析,提出了仿生嗅觉传感技术的适用场景和优势。最后,结合仿生嗅觉传感技术的发展和研究方向,对仿生嗅觉传感技术未来的应用前景和关键问题进行了分析,提出了未来仿生嗅觉传感技术的研究展望。 展开更多
关键词 仿生嗅觉 电力设备状态检测 气体识别 应用 展望
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Optimality Conditions of the Set-valued Optimization Problem with Generalized Cone Convex Set-valued Maps Characterized by Contingent Epiderivative 被引量:2
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作者 Zhi-ang ZHOU Xin-min YANG Qiu-sheng QIU 《Acta Mathematicae Applicatae Sinica》 SCIE CSCD 2018年第1期11-18,共8页
In this paper, firstly, a new notion of generalized cone convex set-valued map is introduced in real normed spaces. Secondly, a property of the generalized cone convex set-valued map involving the contingent epideriva... In this paper, firstly, a new notion of generalized cone convex set-valued map is introduced in real normed spaces. Secondly, a property of the generalized cone convex set-valued map involving the contingent epiderivative is obtained. Finally, as the applications of this property, we use the contingent epiderivative to establish optimality conditions of the set-valued optimization problem with generalized cone convex set-valued maps in the sense of Henig proper efficiency. The results obtained in this paper generalize and improve some known results in the literature. 展开更多
关键词 set-valued maps generalized cone convexity Henig proper efficiency contingent epiderivative optimality conditions
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Doob's Stopping Theorems for Set-Valued (Super, Sub) Martingales with Continuous Time 被引量:1
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作者 汪荣明 《Journal of Mathematical Research and Exposition》 CSCD 2000年第4期515-522,共8页
In this paper the regularity of set-valued martingales in the sense of JL is given first. Then we show some kinds of Doob's stopping theorems for set-valued (super, sub) martingales with continuous time.
关键词 set-valued (super sub) martingale Doob's stopping theorem set-valued conditional expectation regulari<
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Higher-order Optimality Conditions and Duality for Approximate Solutions in Non-convex Set-valued Optimization
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作者 Guo-lin YU Tian-tian GONG 《Acta Mathematicae Applicatae Sinica》 SCIE CSCD 2019年第3期620-628,共9页
This paper deals with higher-order optimality conditions and duality theory for approximate solutions in vector optimization involving non-convex set-valued maps.Firstly,under the assumption of near cone-subconvexlike... This paper deals with higher-order optimality conditions and duality theory for approximate solutions in vector optimization involving non-convex set-valued maps.Firstly,under the assumption of near cone-subconvexlikeness for set-valued maps,the higher necessary and sufficient optimality conditions in terms of Studniarski derivatives are derived for local weak approximate minimizers of a set-valued optimization problem.Then,applications to Mond-Weir type dual problem are presented. 展开更多
关键词 studniarski DERIVATIVES OPTIMALITY conditions set-valued optimization problem efficiency DUALITY
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