基于信息熵的公交线网优化方案余弦排序

Cosine prioritizing method for the optimization scheme of public traffic network based on information entropy

针对公交线网优化方案的排序问题,在对公交线网的优化目标和约束条件进行量化处理的基础上,利用余弦公式,建立了公交线网优化方案的余弦排序模型.该模型在定义指标线段和理想指标线段的基础上,通过对决策方案与理想方案中指标线段和理想指标线段之间夹角余弦值的大小比较,得到公交线网优化的最佳决策方案.应用结果表明该模型能够较好地反映城市公交线网的实际情况,解决优化目标的权重分配问题,是一种很有效的公交线网优化方案排序方法.

A cosine prioritizing method is presented with respect to the optimization scheme of public traffic network. The mathematical expression for optimum objects and corresponding constraints are set up. Based on the optimization indexes line segment＇s definition and ideal line segment＇s definition, the schemes are arranged in simple order according to the cosine value between hne segment in each scheme and ideal line segment in ideal scheme, so the decision making model for the optimization of urban traffic network is present by quantum analysis and cosine formula. Applied results indicate that the method accord to the real situation, and solve weight distribute problems for optimum object. It is an effectively prioritizing method for the optimization scheme of public traffic network.