beta为-inf、inf,根结点为max层,整体max、min层交替遍历顺序:二叉树中序遍历(左中右)参数更新:向上:max层更新alpha,min层更新beta;向下:passPruning:(alpha >= beta)alpha pruning:(max层)父结点alpha >= 子结点betabeta pruning: (min层)父结点beta <= 子结点alpha"""def__
int value =alpha_beta_pruning(position->left,alpha,beta,false); max1 = std::max(value,max1); alpha = std::max(alpha,max1);if(beta <= alpha){delete_subtree(position->right);//剪枝只发生在右边position->right = NULL;returnmax1; } value =alpha_beta_pruning(position->right,alpha,beta...
2-5.3 Alpha-Beta Pruning(Alpha-Beta剪枝)是人工智能原理_北京大学_王文敏的第31集视频,该合集共计67集,视频收藏或关注UP主,及时了解更多相关视频内容。
Alpha-Beta Pruning
Alpha-Beta Pruning Game tree :博弈树 有双人/多人博弈树,如下two-ply game tree 我们从leaf向上看,leaf深度为0,依次往上加,每层代表不同方状态。 比如上图0层我有9种可能的状态,对应于我不同的得分,我的目标就是MAX,即操作使得我能得分最大,而1层是对手可能的状态,他的目标是MIN,即让我的分数最小化...
To utilize the alpha-beta pruning, we consider the small cells as leaves on a tree with corresponding load values. To estimate these loads, we also utilize the G/G/1 queuing system. After finding the small cells which are probable for MLB&MRO conflict, we utilize the two-dimensional ...
Althfer's alternative minimax algorithm has been proven to be invulnerable to pathology. However, it has not been clear whether alpha-beta pruning, a crucial component of practical game programs, could be applied in the context of Alhfer's algorithm. In this brief paper, we show how alpha-...
Nodes that are not needed to evaluate the possible moves of the top node are 'pruned'. Suppose that MAX is to move at parent nodedoi:10.1007/978-3-642-96868-6_7Alan BundyLincoln WallenSpringer Berlin HeidelbergSymbolic Computation
int alpha_beta_pruning(Node* position, int alpha, int beta, bool who){ if(position->left == NULL){ return position->value; } if(who){// max int max1 = INT_MIN; int value = alpha_beta_pruning(position->left,alpha,beta,false); max1 = std::max(value,max1); alpha = std::max...
一图流解释 Alpha-Beta 剪枝(Alpha-Beta Pruning) Alpha-Beta剪枝用于裁剪搜索树中不需要搜索的树枝,以提高运算速度。它基本的原理是: 当一个 Min 节点的 β值≤任何一个父节点的α值时 ,剪掉该节点的所有子节点 当一个 Max 节点的 α值≥任何一个父节点的β值时 ,剪掉该节点的所有子节点...