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原来极大极小过程中的alpha-beta剪枝是不能配合记忆化搜索的

Posted by ZaakDov at 2009-10-19 23:36:56 on Problem 3317
alpha-beta剪枝使得每一个子状态在它的父亲兄弟们的约束下,得出一个相应得值,所以与其父兄节点有关系,而记忆化搜索则默认子节点只与自己的状态有关系,忽略了父兄的约束条件,实际上一颗博弈树上可能有多颗节点同时指向一个节点,若把alpha-beta与记忆化结合起来,那么该节点将只被一组父兄节点限制一次,也就只考虑了这组父兄所带来的alpha-beta界剪枝下的结果,很有可能把本属于另外组别父兄节点的最优解给误剪掉了……
调了8个小时不吃不喝始终也过不了自己出的数据,原来算法错了,唉!

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