期刊文献+
共找到154篇文章
< 1 2 8 >
每页显示 20 50 100
Upper and Lower Semicontinuity of Solution Sets for Parametric Generalized Vector Quasi-equilibrium Problems
1
作者 LI AI-QIN FAN LI-YA 《Communications in Mathematical Research》 CSCD 2011年第1期1-5,共5页
In this paper, two kinds of parametric generalized vector quasi-equilibrium problems are introduced and the relations between them are studied. The upper and lower semicontinuity of their solution sets to parameters a... In this paper, two kinds of parametric generalized vector quasi-equilibrium problems are introduced and the relations between them are studied. The upper and lower semicontinuity of their solution sets to parameters are investigated. 展开更多
关键词 parametric generalized vector quasi-equilibrium problem solution set upper semicontinuity lower semicontinuity set-valued mapping
下载PDF
Continuity of Solution Mappings for Parametric Set Optimization Problems under Partial Order Relations
2
作者 Yueming Sun 《Advances in Pure Mathematics》 2020年第11期631-644,共14页
This paper mainly investigates the semicontinuity of solution mappings for set optimization problems under a partial order set relation instead of upper and lower set less order relations. To this end, we propose two ... This paper mainly investigates the semicontinuity of solution mappings for set optimization problems under a partial order set relation instead of upper and lower set less order relations. To this end, we propose two types of monotonicity definition for the set-valued mapping introduced by two nonlinear scalarization functions which are presented by these partial order relations. Then, we give some sufficient conditions for the semicontinuity and closedness of solution mappings for parametric set optimization problems. The results presented in this paper are new and extend the main results given by some authors in the literature. 展开更多
关键词 parametric set optimization problem Nonlinear Scalarization Function SEMICONTINUITY Partial Order Relation
下载PDF
Well-Posedness for Tightly Proper Efficiency in Set-Valued Optimization Problem
3
作者 Yangdong Xu Pingping Zhang 《Advances in Pure Mathematics》 2011年第4期184-186,共3页
In this paper, a characterization of tightly properly efficient solutions of set-valued optimization problem is obtained. The concept of the well-posedness for a special scalar problem is linked with the tightly prope... In this paper, a characterization of tightly properly efficient solutions of set-valued optimization problem is obtained. The concept of the well-posedness for a special scalar problem is linked with the tightly properly efficient solutions of set-valued optimization problem. 展开更多
关键词 set-valued optimization problem Tightly PROPER EFFICIENCY WELL-POSEDNESS
下载PDF
Monotone Iterative Method for Set valued Quasilinear Elliptic Boundary Value Problems
4
作者 孙乐林 徐迪红 +1 位作者 程建 李荣华 《Northeastern Mathematical Journal》 CSCD 2001年第1期5-8,共4页
关键词 set valued differential equation elliptic boundary value problem generalized monotone iteration
下载PDF
Optimality for Henig Proper Efficiency in Vector Optimization Involving Dini Set-Valued Directional Derivatives
5
作者 Guolin Yu Huaipeng Bai 《Applied Mathematics》 2011年第7期922-925,共4页
This note studies the optimality conditions of vector optimization problems involving generalized convexity in locally convex spaces. Based upon the concept of Dini set-valued directional derivatives, the necessary an... This note studies the optimality conditions of vector optimization problems involving generalized convexity in locally convex spaces. Based upon the concept of Dini set-valued directional derivatives, the necessary and sufficient optimality conditions are established for Henig proper and strong minimal solutions respectively in generalized preinvex vector optimization problems. 展开更多
关键词 VECTOR optimization Dini set-valued Directional DERIVATIVE generalized Preinvex Function Henig PROPER Efficiency
下载PDF
NONEMPTY INTERSECTION THEOREMS AND SYSTEM OF GENERALIZED VECTOR EQUILIBRIUM PROBLEMS IN PRODUCT G-CONVEX SPACES 被引量:3
6
作者 丁协平 《应用数学和力学》 EI CSCD 北大核心 2004年第6期563-571,共9页
By using an existence theorems of maximal elements for a family of set-valued mappings in G-convex spaces due to the author, some new nonempty intersection theorems for a family of set-valued mappings were established... By using an existence theorems of maximal elements for a family of set-valued mappings in G-convex spaces due to the author, some new nonempty intersection theorems for a family of set-valued mappings were established in noncompact product G-convex spaces. As applications, some equilibrium existence theorems for a system of generalized vector equilibrium problems were proved in noncompact product G-convex spaces. These theorems unify, improve and generalize some important known results in literature. 展开更多
关键词 集值映象组 非空交定理 广义矢量平衡问题组 乘积G凸空间
下载PDF
NONEMPTY INTERSECTION THEOREMS AND SYSTEM OF GENERALIZED VECTOR EQUILIBRIUM PROBLEMS IN PRODUCT G-CONVEX SPACES 被引量:4
7
作者 DINGXie-ping 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2004年第6期618-626,共9页
By using an existence theorems of maximal elements for a family of set-valued mappings in G-convex spaces due to the author, some new nonempty intersection theorems for a family of set-valued mappings were established... By using an existence theorems of maximal elements for a family of set-valued mappings in G-convex spaces due to the author, some new nonempty intersection theorems for a family of set-valued mappings were established in noncompact product G-convex spaces. As applications, some equilibrium existence theorems for a system of generalized vector equilibrium problems were proved in noncompact product G-convex spaces. These theorems unify, improve and generalize some important known results in literature. 展开更多
关键词 family of set-valued mapping nonempty intersection theorem system of generalized vector equilibrium problem product G-convex space
下载PDF
LEVITIN-POYAK WELL-POSEDNESS OF GENERALIZED VECTOR EQUILIBRIUM PROBLEMS WITH FUNCTIONAL CONSTRAINTS 被引量:2
8
作者 王刚 黄学祥 +1 位作者 张杰 陈光亚 《Acta Mathematica Scientia》 SCIE CSCD 2010年第5期1400-1412,共13页
In this article, we study Levitin-Polyak type well-posedness for generalized vector equilibrium problems with abstract and functional constraints. Criteria and characterizations for these types of well-posednesses are... In this article, we study Levitin-Polyak type well-posedness for generalized vector equilibrium problems with abstract and functional constraints. Criteria and characterizations for these types of well-posednesses are given. 展开更多
关键词 generalized vector equilibrium problems WELL-POSEDNESS set-valued map approximating solution sequence
下载PDF
A NEW CLASS OF BILEVEL GENERALIZED MIXED EQUILIBRIUM PROBLEMS IN BANACH SPACES 被引量:2
9
作者 丁协平 《Acta Mathematica Scientia》 SCIE CSCD 2012年第4期1571-1583,共13页
A new class of bilcvel generalized mixed equilibrium problems involving setvalued mappings is introduced and studied in a real Banach space. By using the auxiliary principle technique, new iterative algorithms for sol... A new class of bilcvel generalized mixed equilibrium problems involving setvalued mappings is introduced and studied in a real Banach space. By using the auxiliary principle technique, new iterative algorithms for solving the generalized mixed equilibrium problems and bilevel generalized mixed equilibrium problems involving set-valued mappings are suggested and analyzed. Existence of solutions and strong convergence of the iterative sequences generated by the algorithms are proved under quite mild conditions. The behavior of the solution set of the generalized mixed equilibrium problems and bilevel generalized mixed equilibrium problems is also discussed. These results are new and generalize some recent results in this field. 展开更多
关键词 generalized mixed equilibrium problem bilevel generalized mixed equilib-rium problem involving set-valued mappings MONOTONICITY auxiliary prin-ciple iterative algorithm Banach space
下载PDF
Optimality Conditions of the Set-valued Optimization Problem with Generalized Cone Convex Set-valued Maps Characterized by Contingent Epiderivative 被引量:2
10
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
原文传递
电动车辆路径问题:可调鲁棒数学模型与算法
11
作者 郭静梅 张瑞友 《系统工程学报》 CSCD 北大核心 2024年第3期373-382,412,共11页
针对行驶时间不确定的允许部分充电的带时间窗电动车辆路径问题,考虑多面体不确定集度量行驶时间的不确定性,建立了一个可调鲁棒优化模型,设计了基于行生成和集划分的求解算法,采用标号法对路径的可行性进行判定,并将不可行的路径作为... 针对行驶时间不确定的允许部分充电的带时间窗电动车辆路径问题,考虑多面体不确定集度量行驶时间的不确定性,建立了一个可调鲁棒优化模型,设计了基于行生成和集划分的求解算法,采用标号法对路径的可行性进行判定,并将不可行的路径作为新的约束加入到模型中.数值实验表明,94%的算例可求得最优解,这验证了本算法的效率;利用多面体不确定集进行度量对总行驶距离和车辆总数目具有正向的影响;相比于普通鲁棒优化,可调鲁棒优化的求解结果有显著提高,可以提升车辆调度的灵活性. 展开更多
关键词 电动车辆路径问题 可调鲁棒优化 不确定行驶时间 行生成 集划分
下载PDF
On the Stability of the Solution Set Mappings to Parametric Set Optimization Problems 被引量:1
12
作者 Yang-Dong Xu Ping-Ping Zhang 《Journal of the Operations Research Society of China》 EI CSCD 2016年第2期255-263,共9页
In this paper,under some suitable assumptions without any involving information on the solution set,we give some sufficient conditions for the upper semicontinuity,lower semicontinuity,and closedness of the solution s... In this paper,under some suitable assumptions without any involving information on the solution set,we give some sufficient conditions for the upper semicontinuity,lower semicontinuity,and closedness of the solution set mapping to a parametric set optimization problem with possible less order relation. 展开更多
关键词 Upper semicontinuity Lower semicontinuity Closedness parametric set optimization problem Less order relation
原文传递
Second-order Optimality Conditions for Cone-subarcwise Connected Set-valued Optimization Problems
13
作者 Zhen-hua PENG Yi-hong XU 《Acta Mathematicae Applicatae Sinica》 SCIE CSCD 2018年第1期183-196,共14页
The concept of a cone subarcwise connected set-valued map is introduced. Several examples are given to illustrate that the cone subarcwise connected set-valued map is a proper generalization of the cone arcwise connec... The concept of a cone subarcwise connected set-valued map is introduced. Several examples are given to illustrate that the cone subarcwise connected set-valued map is a proper generalization of the cone arcwise connected set-valued map, as well as the arcwise connected set is a proper generalization of the convex set,respectively. Then, by virtue of the generalized second-order contingent epiderivative, second-order necessary optimality conditions are established for a point pair to be a local global proper efficient element of set-valued optimization problems. When objective function is cone subarcwise connected, a second-order sufficient optimality condition is also obtained for a point pair to be a global proper efficient element of set-valued optimization problems. 展开更多
关键词 cone subarcwise connected set-valued map generalized contingent epiderivative global proper efficiency optimality condition
原文传递
集值优化问题E-Henig有效解的稳定性
14
作者 曾静 胡瑞婷 +1 位作者 彭家玉 丁若文 《重庆工商大学学报(自然科学版)》 2023年第3期97-105,共9页
改善集下的Henig有效解统一了Henig有效解和近似Henig有效解,其稳定性分析在数值计算中不可或缺,同时集值优化问题是当前优化领域研究的热点问题,研究基于改善集下的集值优化问题E-Henig有效解的稳定性具有重要的理论意义和实用价值。首... 改善集下的Henig有效解统一了Henig有效解和近似Henig有效解,其稳定性分析在数值计算中不可或缺,同时集值优化问题是当前优化领域研究的热点问题,研究基于改善集下的集值优化问题E-Henig有效解的稳定性具有重要的理论意义和实用价值。首先,针对集值优化问题,基于改善集的概念,引入集值优化问题的E-Henig有效解,统一了集值优化问题近似Henig有效解和Henig有效解;其次,在集值优化问题目标映射和约束条件均扰动的情况下,借助Painlevé-Kuratowski收敛性,建立集值映射水平集的闭凸性、有界性及回收锥的相关性质;然后,借助所获得的集值映射水平集的闭凸性、有界性及回收锥的性质,在集值优化问题目标映射和约束条件均扰动的情况下,分别建立严格真拟C-凸集值优化问题E-弱有效点集、E-Henig有效点集和E-Henig有效解的稳定性结果。所得结果首次聚焦于集值优化问题基于改善集概念下的弱有效点集、Henig有效点集及Henig有效解集的稳定性结果,相较于以往文献大都只关注集值优化问题Henig有效解的存在性、最优性条件、对偶性性质,大大完善了集值优化问题Henig有效解的理论结果,并为数值计算的稳定性分析提供了方法和技巧。 展开更多
关键词 集值优化问题 E-Henig有效解 Painlevé-Kuratowski收敛性 稳定性
下载PDF
基于变动控制结构的集优化问题的广义适定性
15
作者 刘园园 王三华 +1 位作者 李秋英 张鹏 《南昌大学学报(理科版)》 CAS 北大核心 2023年第1期1-9,共9页
讨论基于变动控制(偏序)结构的集优化问题的广义适定性。利用变动偏序结构,引进了关于集合的两种不同变动序关系,进而给出了集优化问题相应的广义适定性概念。提出了近似解集并讨论了其性质。运用这些性质,在目标映射具适当的半连续性... 讨论基于变动控制(偏序)结构的集优化问题的广义适定性。利用变动偏序结构,引进了关于集合的两种不同变动序关系,进而给出了集优化问题相应的广义适定性概念。提出了近似解集并讨论了其性质。运用这些性质,在目标映射具适当的半连续性条件下,获得了集优化问题关于变动序结构的广义适定性的充分性条件与必要性条件。给出了若干例子,用以说明所得主要结果的正确性。由于变动偏序结构是固定偏序结构的自然推广,所得主要结果推广和发展了本领域的近期相关研究成果。 展开更多
关键词 集优化问题 广义适定性 变动控制结构 变动序关系
下载PDF
CW-E-对称可微区间值函数及其在广义凸区间值优化问题中的应用
16
作者 李慧云 叶国菊 +1 位作者 刘尉 赵大方 《湖北大学学报(自然科学版)》 CAS 2023年第4期478-486,共9页
借助向量值映射E:R n→R n,这里R n是n维实数空间,首先提出一类新的CW-E-对称可微区间值函数,将不可微区间值函数转换成可微函数,进而研究该类函数性质;其次在区间CW-序关系,引入CW-E-预不变凸区间值函数和CW-E-对称不变凸区间值函数的... 借助向量值映射E:R n→R n,这里R n是n维实数空间,首先提出一类新的CW-E-对称可微区间值函数,将不可微区间值函数转换成可微函数,进而研究该类函数性质;其次在区间CW-序关系,引入CW-E-预不变凸区间值函数和CW-E-对称不变凸区间值函数的定义,并在CW-E-对称可微下,研究CW-E-预不变凸区间值函数和CW-E-对称不变凸区间值函数的关系.最后,作为应用,研究广义不变凸区间值优化问题的E-最优性条件,并举例验证了结果的有效性. 展开更多
关键词 CW-E-对称可微区间值函数 广义不变凸性 区间值优化问题 E-最优性条件
下载PDF
基于改进灰狼搜索耦合杜鹃算法的水力发电机组启动优化 被引量:1
17
作者 李佰霖 龚子锐 +2 位作者 杨林明 杨建 何强 《水电能源科学》 北大核心 2023年第9期180-184,共5页
为缩短水力发电机组开机时间,提高机组开机过程和空载稳定性,提出一种基于改进灰狼搜索耦合杜鹃算法的水力发电机组启动优化策略,建立开机适应度函数,该函数权衡机组开机频率ITAE指标和机组开机时间两个指标数值并将其标幺化,引入机组... 为缩短水力发电机组开机时间,提高机组开机过程和空载稳定性,提出一种基于改进灰狼搜索耦合杜鹃算法的水力发电机组启动优化策略,建立开机适应度函数,该函数权衡机组开机频率ITAE指标和机组开机时间两个指标数值并将其标幺化,引入机组频率超调量和机组频率稳态误差两个惩罚函数,从而有效改善机组启动性能评价指标,且提出一种佳点集理论改进初始种群的改进灰狼搜索耦合杜鹃算法(IGWSCSA)针对机组启动参数进行精确优化。基于调速系统精细化模型的仿真试验得到最优参数使机组开机调节时间明显缩短,超调量由0.235降低至0.004,极大优化了水力发电机组启动的开机速度和频率波动。 展开更多
关键词 水力发电机组 启动优化 标幺值 佳点集 群智能算法 参数优化
下载PDF
基于BB步长的一类原始-对偶算法
18
作者 郑代秀 《西南师范大学学报(自然科学版)》 CAS 2023年第1期40-47,共8页
增广拉格朗日乘子法(ALM)是求解带等式约束的二次凸优化问题的常用方法,但罚参数选取不当时,收敛速度比较慢.提出ALM-BB算法,利用Barzilai-Borwein(BB)算法的步长去改进原始的ALM,证明ALM-BB算法的收敛性.最后将这类方法运用于求解范数... 增广拉格朗日乘子法(ALM)是求解带等式约束的二次凸优化问题的常用方法,但罚参数选取不当时,收敛速度比较慢.提出ALM-BB算法,利用Barzilai-Borwein(BB)算法的步长去改进原始的ALM,证明ALM-BB算法的收敛性.最后将这类方法运用于求解范数最优控制问题.数值算例表明改进的算法收敛速度更快. 展开更多
关键词 二次凸规划问题 增广拉格朗日乘子法 BB步长 范数最优控制问题
下载PDF
Higher-order Optimality Conditions and Duality for Approximate Solutions in Non-convex Set-valued Optimization
19
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
原文传递
集值映射向量优化问题的ε-真有效解(英文) 被引量:31
20
作者 戎卫东 马毅 《运筹学学报》 CSCD 2000年第4期21-32,共12页
本文讨论集值映射向量优化问题的ε-真有效解.在集值映射为广义锥-次类凸的假设下,建立了这种解的标量化定理,ε-Lagrange乘子定理,ε-真鞍点定理和ε-真对偶性定理.
关键词 集值映射 向量优化问题 广义锥-次类凸性 ε-真有效性
下载PDF
上一页 1 2 8 下一页 到第
使用帮助 返回顶部