optimal policy的用法和樣例：
例句
- The effect of system parameters on the optimal policies and the optimal expected profit with substitutable demand are also discussed.
並討論了此時的最優策略和最優利潤隨各參數的變化情況。 - Linear programming formulation is used to find the optimal solution, which maximizes the channel utilization while guaranteeing requirements of QoS con-straints.
用線性規劃方法求解最優策略，從而在滿足服務質量約束要求的同時最大化通道利用率。
