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供应商选择问题的不确定性模型及遗传算法(英文)
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作者 雷中林 何世伟 sohail s.chaudhry 《交通运输系统工程与信息》 EI CSCD 2006年第3期58-63,共6页
供应商选择问题是物流领域内的一个重要问题,其目标函数就是在包括送达时间、原料质量和服务水平等的约束下使总花费最小.传统的确定性模型取得了较好的效果,但是由于其约束条件的随机性和模糊性,需要应用不确定性模型来更准确地描述和... 供应商选择问题是物流领域内的一个重要问题,其目标函数就是在包括送达时间、原料质量和服务水平等的约束下使总花费最小.传统的确定性模型取得了较好的效果,但是由于其约束条件的随机性和模糊性,需要应用不确定性模型来更准确地描述和给出最优解.论文应用了不确定性模型描述这类供应商选择问题,这个不确定性模型就是一类特殊的机会约束规划模型,此类机会约束可以转化为相应的等价类,这样不确定性模型就可以转化为确定性模型,然后设计了解决这类问题的遗传算法.通过实例计算表明,不确定性优化模型及遗传算是解决供应商选择等这类不确定性智能商业问题的有效办法,有广泛的应用前景. 展开更多
关键词 不确定性 随机机会约束规划 供应商选择 遗传算法
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A hybrid approach for the evaluation of supermarket food safety 被引量:1
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作者 Yanan Wang Weige Ji sohail s.chaudhry 《Journal of Management Analytics》 EI 2014年第2期156-167,共12页
In this paper,a framework is developed that evaluates supermarket food safety and exposes its relative strengths and weaknesses.The proposed framework is divided into three stages.During the first stage,an index syste... In this paper,a framework is developed that evaluates supermarket food safety and exposes its relative strengths and weaknesses.The proposed framework is divided into three stages.During the first stage,an index system is constructed that is associated with supermarket food safety based on the supply chain.In the second stage,the Analytic Hierarchy Process(AHP)is applied to evaluate supermarket food safety.The third stage is associated with the application of the Technique for Order Preference by Similarity to Ideal Solution(TOPSIS).The proposed framework can assist managers in comprehending the present strengths and weaknesses of their food safety.Managers can identify good practices and are able to benchmark them for improving their weaknesses.This framework also facilitates the decision makers to better understand the complex relationships of the relevant supermarket food safety factors in decision-making. 展开更多
关键词 food safety index system TOPSIS AHP
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Commodity layout in supermarkets:using the integration of the comprehensive related value method and genetic algorithm
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作者 Chenxia Jin Fachao Li +1 位作者 Yuqing Xia sohail s.chaudhry 《Journal of Management Analytics》 EI 2023年第4期625-648,共24页
The existing shelf layout methods do not explicitly consider the attention and relevancy of the commodity systematically and thus have failed to capture the invalid associations,resulting in poor sales impact and cust... The existing shelf layout methods do not explicitly consider the attention and relevancy of the commodity systematically and thus have failed to capture the invalid associations,resulting in poor sales impact and customer satisfaction.For such shortcomings,in this paper,we propose a mathematical programming approach for shelf layout problems based on comprehensive related value.First,we introduce the concepts of related value considering both attention and relevancy;second,we give the concept of adjacent utility value and the freedom of placement,and further analyze the impact of the same commodity on surrounding commodities due to different placement positions;third,we establish a new comprehensive related value-based commodity layout optimization model(CRV-CL)and provide the solution steps integrating with a genetic algorithm.Finally,we analyze the characteristics of CRV-CL through a specific case.The simulation results indicate the overall relevancy after applying the CRV-CL model. 展开更多
关键词 Shelf layout comprehensive related value freedom of placement adjacent utility value genetic algorithm
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