拓扑总深度指从起始节点，沿最少拓扑深度的路径，到达其他所有节点的拓扑深度之和。
拓扑总深度
Sources
Hillier , B. & Iida, S. (2005), Network and psychological effects in urban movement, In: A.G. Cohn and D.M. Mark (Eds.): COSIT 2005, LNCS 3693, pp. 475-490.
拓扑总深度指从起始节点，沿最少拓扑深度的路径，到达其他所有节点的拓扑深度之和。
Hillier , B. & Iida, S. (2005), Network and psychological effects in urban movement, In: A.G. Cohn and D.M. Mark (Eds.): COSIT 2005, LNCS 3693, pp. 475-490.