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A New Kind of Simple Smooth Exact Penalty Function of Constrained Nonlinear Programming
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作者 SUN Chu ren, ZHANG Lian sheng College of Sciences, Shanghai University, Shanghai 200072, China 《Journal of Shanghai University(English Edition)》 CAS 2001年第4期287-291,共5页
The penalty function method is one basic method for solving constrained nonlinear programming, in which simple smooth exact penalty functions draw much attention for their simpleness and smoothness. This article offer... The penalty function method is one basic method for solving constrained nonlinear programming, in which simple smooth exact penalty functions draw much attention for their simpleness and smoothness. This article offers a new kind of simple smooth approximative exact penalty function of general constrained nonlinear programmings and analyzes its properties. 展开更多
关键词 exact penalty function MFCQ constrain condition
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基于机会约束规划的含智能楼宇主动配电网分布式能量管理策略 被引量:5
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作者 苏粟 李泽宁 +2 位作者 靳小龙 夏明超 陈奇芳 《中国电机工程学报》 EI CSCD 北大核心 2023年第10期3781-3793,共13页
为实现集成智能楼宇(intelligent building,IBs)的主动配电网(active distribution network,ADN)灵活运行,该文提出一种基于机会约束规划的含IBs的ADN分布式能量管理策略。首先,基于建筑物的热惯性,构建含空调柔性负荷的IBs数学模型;其... 为实现集成智能楼宇(intelligent building,IBs)的主动配电网(active distribution network,ADN)灵活运行,该文提出一种基于机会约束规划的含IBs的ADN分布式能量管理策略。首先,基于建筑物的热惯性,构建含空调柔性负荷的IBs数学模型;其次,综合考虑楼宇侧与网络侧的运行约束,建立基于Dist Flow的集成IBs的ADN数学模型;然后,考虑到光伏(photovoltaic,PV)出力与外界温度的不确定性,利用机会约束规划将集成IBs的ADN优化问题转化为混合整数二阶锥规划(mixed integer second-order cone programming,MISOCP)问题;最后,为了保护配电网运营商与用户的隐私性,利用交替方向乘子法(alternating direction method of multipliers,ADMM)实现了集成IBs的ADN的分布式能量管理。基于ADMM的解耦机制,原MISOCP问题可以被分解为楼宇侧的混合整数线性规划(mixed-integer linear programming,MILP)子问题以及网络侧的二阶锥规划(second-order cone programming,SOCP)子问题进行求解。结果表明,在保障各主体信息隐私性的前提下,所提策略利用IBs灵活性实现了集成IBs的ADN全局最优能量管理。 展开更多
关键词 主动配电网 空调 机会约束规划 分布式能量管理 智能楼宇
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基于多属性的动态采样协同过滤推荐算法 被引量:7
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作者 李维乾 张艺 +2 位作者 郑振峰 王海 张紫云 《计算机应用研究》 CSCD 北大核心 2020年第9期2640-2644,2683,共6页
针对目前协同过滤推荐算法推荐精度和用户数据在算法中匹配度都不高的问题,提出一种多属性的条件受限波尔兹曼机协同过滤推荐模型(MA-CRBM)。该模型基于实值状态的条件玻尔兹曼机,融合了用户职业和性别属性,充分利用数据集中潜在的评分... 针对目前协同过滤推荐算法推荐精度和用户数据在算法中匹配度都不高的问题,提出一种多属性的条件受限波尔兹曼机协同过滤推荐模型(MA-CRBM)。该模型基于实值状态的条件玻尔兹曼机,融合了用户职业和性别属性,充分利用数据集中潜在的评分与未评分信息。在训练过程中,采用动态迭代采样算法对原采样算法进行了改进,克服了训练后期数据采样误差波动太大导致精确度不高的问题。在MovieLens数据集上的实验结果表明,MA-CRBM模型具有较好的推荐效果,可以有效提升推荐模型的精度和效率。 展开更多
关键词 协同过滤推荐算法 条件受限性玻尔兹曼机 多属性条件推荐 动态迭代采样算法
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An improved PSO algorithm for solving nonlinear programing problems with constrained conditions
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作者 Wei-Der Chang 《International Journal of Modeling, Simulation, and Scientific Computing》 EI 2021年第1期142-156,共15页
Engineering optimization problems can be always classified into two main categories including the linear programming(LP)and nonlinear programming(NLP)problems.Each programming problem further involves the unconstraine... Engineering optimization problems can be always classified into two main categories including the linear programming(LP)and nonlinear programming(NLP)problems.Each programming problem further involves the unconstrained conditions and constrained conditions for design variables of the optimized system.This paper will focus on the issue about the design problem of NLP with the constrained conditions.The employed method for such NLP problems is a variant of particle swarm optimization(PSO),named improved particle swarm optimization(IPSO).The developed IPSO is to modify the velocity updating formula of the algorithm to enhance the search ability for given optimization problems.In this work,many different kinds of physical engineering optimization problems are examined and solved via the proposed IPSO algorithm.Simulation results compared with various optimization methods reported in the literature will show the effectiveness and feasibility for solving NLP problems with the constrained conditions. 展开更多
关键词 Engineering optimization nonlinear programming constrained conditions improved particle swarm optimization(IPSO)
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