The equation of state and optimal value function used to achieve the optimal strategy is figured out through the analysi通过条件概率分析，计算出了动态规划状态转移方程和最优期望代价方程，并得到了关联规则发现的决策策略。
The strategy is realized placidly and easily, without the computation of conditional probability in each step.该策略不需要每一步计算条件概率，其实现平稳方便。