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Recent Advances in Mathematical Programming with Semi-continuous Variables and Cardinality Constraint 被引量:3
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作者 Xiaoling Sun Xiaojin Zheng Duan Li 《Journal of the Operations Research Society of China》 EI 2013年第1期55-77,共23页
Mathematical programming problems with semi-continuous variables and cardinality constraint have many applications,including production planning,portfolio selection,compressed sensing and subset selection in regressio... Mathematical programming problems with semi-continuous variables and cardinality constraint have many applications,including production planning,portfolio selection,compressed sensing and subset selection in regression.This class of problems can be modeled as mixed-integer programs with special structures and are in general NP-hard.In the past few years,based on new reformulations,approximation and relaxation techniques,promising exact and approximate methods have been developed.We survey in this paper these recent developments for this challenging class of mathematical programming problems. 展开更多
关键词 Semi-continuous variables Cardinality and sparsity constraint Mixed-integer 0-1 quadratic programming Perspective reformulation Lagrangian decomposition Approximate methods
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基于飞机到发机场状态的航班恢复模型及算法
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作者 周文君 '李功 杨国举 《数学的实践与认识》 北大核心 2020年第24期20-31,共12页
航班恢复问题在航空日常运营中占有重要地位,高质量的航班恢复是提供运输服务的重要保障.建立了不考虑旅客旅程信息的多机型航班恢复的非线性整数规划模型,引入了累积0-1变量用以描述了飞机的时间资源占用,提出了飞机到发机场状态以描... 航班恢复问题在航空日常运营中占有重要地位,高质量的航班恢复是提供运输服务的重要保障.建立了不考虑旅客旅程信息的多机型航班恢复的非线性整数规划模型,引入了累积0-1变量用以描述了飞机的时间资源占用,提出了飞机到发机场状态以描述飞机的空间位置.考虑到问题复杂度和求解时间的要求,本文在对所构建模型特点进行分析之后,设计了基于惩罚费用的启发式算法进行求解.通过算例验证,所设计启发式算法能够在较短时间内得出满意解. 展开更多
关键词 航空运输 航班恢复 飞机到发机场状态 累计0-1变量 启发式算法
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