The algorithm works because if a vertex has no successors, it must be the last one in the topological ordering. 算法能够执行是因为,如果一个顶点没有后继,那么它肯定是拓扑序列中的最后一个。
A Simulated Elastic-Force Analysis of SOM on Topological Ordering SOM拓扑保序机理的模拟弹性力分析
It provides an effect theoretical tool for studying many nonlinear problems, mainly including topological degree method, variational method, partial ordering method and analytic method and so on. 它为解决各种各样的非线性问题提供了一个富有成效的理论工具。利用非线性泛函分析研究问题的主要方法有:拓扑度理论、临界点理论、半序方法以及分析方法等。