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中文摘要：
利用软逻辑优化重复性项目总工期与总费用,使同一工序中各子工序的施工顺序可以根据需要进行调整,同时考虑了工序的工作连续性要求,在此基础上,建立了多模式、带软逻辑的离散时间-费用权衡问题（DTCTP）优化模型,并提出了一种采用三段式整数编码和双层交叉算子的改进遗传算法.最后,通过一个算例验证了该方法的可行性和有效性.
英文摘要：
This paper aims to optimize the time and cost for the repetitive construction projects based on the soft logic,which means the sequence for performing sub-activities in the same repetitive activity can be adjusted.Considering the work continuity requirement and soft logic for each activity,an optimization model for discrete time/cost trade-offproblem in repetitive construction projects is established.To solve this problem,an improved genetic algorithm is developed.Each chromosome is expressed as a three-segment integer string,and offspring chromosomes are created by a two-stage crossover operator and a proposed mutation operator.An example from pertinent literature demonstrates its effectiveness.
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同项目期刊论文
Reformulations and Efficient Computation for Project Portfolio Selection Problem Considering Project
Expanded model of the project portfolio selection problem with divisibility, time profile factors an
GA optimization model for discrete time/cost trade-off problem in repetitive projects considering re
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