Patrolling a Border
研究了在一条有n个节点的线形网络上进行的巡逻博弈，给出了任意攻击时长m下的最优巡逻策略、最优攻击策略和博弈值，可用于保护边境或通道。
Patrolling games were recently introduced to model the problem of protecting the nodes of a network from an attack. Time is discrete and in each time unit the Patroller can stay at the same node or move to an adjacent node. The Attacker chooses when to attack and which node to attack and needs m consecutive time units to carry it out. The Attacker wins if the Patroller does not visit the chosen node while it is being attacked; otherwise, the Patroller wins. This paper studies the patrolling game where the network is a line graph of n nodes, which models the problem of guarding a channel or protecting a border from infiltration. We solve the patrolling game for any values of m and n, providing an optimal Patroller strategy, an optimal Attacker strategy, and the value of the game (optimal probability that the attack is intercepted).