基于复杂网络的城市公交网络抗毁性分析*

以国内四个城市公共交通系统为研究对象，对由停靠站点构建的公交网络拓扑结构进行了计算和分析。在此基础上提出了公交网络的抗毁性测度——最大连通子图的相对大小和网络效率，并考察了公交网络在不同攻击模式下的抗毁性。结果表明，公交网络具有对随机攻击的鲁棒性，同时又具有对选择攻击的脆弱性。网络的可靠性是由一些关键节点（公交枢纽站点）的稳定性决定的，应当切实保障这类站点的正常、高效运行。

Research on invulnerability of urban transit network based on complex network

For the load distribution problem of hot strip rolling, this paper presented a novel optimization strategy. First proposed a new hybrid immune particle swarm optimization algorithm. Adjusted the population concentration through the clonal selection operator, so realized the high affinity of the individual and the diversity of the population. Then used this hybrid algorithm to optimize the load distribution to obtain the data of optimized pressing rate. Then constructed a neural network for load distribution calculation based on these data. Experiment results show that the proposed hybrid algorithm and optimization stra-tegy can achieve good performance and is practical for field application.