Last Updated :2025/11/23

extensive form game

Noun
Japanese Meaning
拡張形ゲーム:ゲーム理論において、ゲームの進行を意思決定ノードの木構造で表現する方法。 / 唯一の初期ノードから開始し、プレイヤーの選択により枝分かれした経路をたどって進行し、終端ノードに到達した時点でゲームが終了して各プレイヤーへ報酬が割り当てられる。 / 各非終端ノードはあるプレイヤーに属し、そのプレイヤーが可能な動きの中から選択し、その結果が別のノードへとつながる。
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研究者は交渉の状況を、各決定ノードでの手番の順序と利用可能な情報を捉えるために拡張形ゲームとして表現することが多い。

plural

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(game theory) Informally, a representation of a game as a tree of decision nodes, with the game beginning at a unique initial node, and flowing through the tree along a path determined by the players until a terminal node is reached, where play ends and payoffs are assigned to all players; each non-terminal node belongs to a player; that player chooses among the possible moves at that node, each possible move is an edge leading from that node to another node.

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extensive form game

Researchers often represent bargaining situations as an extensive form game to capture the order of moves and the information available at each decision node.

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Researchers often represent bargaining situations as an extensive form game to capture the order of moves and the information available at each decision node.

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