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多产品采购条件下的供应商选择与订购量分配问题研究

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Keywords: 供应商选择,多产品采购,随机需求,价格折扣,多目标混合整数随机规划

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Abstract:

为了解决随机性需求和价格折扣并存条件下的多产品采购供应商选择问题,建立了相应的多目标混合整数随机规划模型。该模型的特点是①模型的约束条件中兼具确定性和随机性;②通过约束条件方程式准确地表现随机性需求和价格折扣两大假设条件。根据该模型的特殊结构,提出了一种适用的求解策略首先,通过把机会约束转化为确定性等价类,而将多目标混合整数随机规划模型转化为多目标混合整数规划模型;然后,采用最大满意度法,将体现决策者偏好和目标模糊性的加权模糊多目标混合整数规划模型转化为求解等价的多个单目标混合整数规划问题;最后,在确定每个模糊目标的隶属度函数表达式的基础上求得问题的最优解。另外,通过应用算例说明了模型的有效性和可行性。

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