Research in basic theory of GA and its application are retrospected and a new mutation operator, combinational mutation, is defined.
回顾遗传算法的理论和应用研究方面的进展，定义了新的变异算子。
In this paper, Genetic Algorithms (GA) for VRP with simple conditions was introduced and cross operator in GA was improved. These researches made full preparation for us to study PDPTW.
本文首先介绍了遗传算法在解决简单约束车辆路径问题上的应用，改进了交叉算子，为研究有时间窗装卸问题的遗传算法作了充分准备。
GA is analyzed and studied deeply in the paper. The ability of neighborhood searching of GA with general mutation operator is weak, and an improved mutation operator is presented in the paper.
本文在对遗传算法进行了仔细分析研究后，针对普通遗传算法变异算子邻域搜索能力较弱的问题进行了改进。
Then, this paper, after analyzing the shortage of BP neural networks in convergence, betters it by combining with the orthogonal-crossover-operator-based GA.
然后分析了神经网络BP算法在收敛方面的不足，并针对其不足结合基于正交算子的遗传算法进行改进。
When designing the coding and operator for GA, the knowledge of related field should be made useful to obtain more efficient outcomes.
试验结果表明，基于矩阵编码的遗传算法相对于其它方法能够取得更有效的结果。
When designing the coding and operator for GA, the knowledge of related field should be made useful to obtain more efficient outcomes.
试验结果表明，基于矩阵编码的遗传算法相对于其它方法能够取得更有效的结果。
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