Claude Shannon proposed instead that programs should cut off the search earlier and apply a ____________evaluttion function to states in the search, effectively turning nonterminal nodes into terminal leaves.克劳德·香农提出:程序应该早一些剪断搜索,并在搜索中对状态应用_____________评价函数,有效地将非终端节点转换为终端叶节点。(请填写中文答案)