期刊文献+

两阶段双情景项目组合选择整体优化模型 被引量:6

The Whole Optimization Modelof Two-stage Project Portfolio Selection under Double Scenarios
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摘要 通过实践分析,提练出两阶段双情景项目组合选择整体优化问题,建立了双层0-1整数规划模型,上层模型为确定性情景,以两阶段所选项目整体价值最大为优化目标;下层为不确定性情景,以下层选择项目期望值最大为优化目标,并采用方差与期望值比值作为风险约束条件。应用可能性理论对下层模型进行了确定性转化。在遗传算法(GA)基础上,结合路径再连接(Path Relinking,PR)局部搜索技术,设计了GA+PR算法,仿真测试验证了算法的有效性。实验得出了不同风险系数下的优化结果,并通过分析获得了较为鲁棒的核心选择项目,可以为企业进行项目组合选择决策提供参考。 Through practice analysis,we put forward to the whole optimization problem of two-stage project portfolio selection under double scenarios.A model of bi-level 0-1 integer programming model is established,in which upperlevel model is in deterministic scenario,with optimization objective being the maximization of the value of projects,which have been selected within two stages,lower layer model was uncertain sense,with optimization objective being the maximization of expected value of projects that have been ...
出处 《系统工程》 CSSCI CSCD 北大核心 2010年第8期46-50,共5页 Systems Engineering
基金 国家自然科学基金重点资助项目(70631003) 国家自然科学基金资助项目(70871034) "863"项目(2006AA04A126)
关键词 两阶段 双情景 项目组合选择 整体优化 Two-stage Double Scenarios Project Portfolio Selection Whole Optimization
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参考文献12

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二级参考文献15

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同被引文献49

引证文献6

二级引证文献28

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