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  2. Principal variation search - Wikipedia

    en.wikipedia.org/wiki/Principal_variation_search

    The exact score is only needed for nodes in the principal variation (an optimal sequence of moves for both players), where it will propagate up to the root. In iterative deepening search, the previous iteration has already established a candidate for such a sequence, which is also commonly called the principal variation.

  3. Tree rotation - Wikipedia

    en.wikipedia.org/wiki/Tree_rotation

    For the root Q in the diagram above, RS is C and OS is P. Using these terms, the pseudo code for the rotation is: let Pivot = Root.OS Root.OS = Pivot.RS Pivot.RS = Root Root = Pivot This is a constant time operation. The programmer must also make sure that the root's parent points to the pivot after the rotation.

  4. Priority search tree - Wikipedia

    en.wikipedia.org/wiki/Priority_search_tree

    In computer science, a priority search tree is a tree data structure for storing points in two dimensions. It was originally introduced by Edward M. McCreight. [1] It is effectively an extension of the priority queue with the purpose of improving the search time from O(n) to O(s + log n) time, where n is the number of points in the tree and s is the number of points returned by the search.

  5. Tree (graph theory) - Wikipedia

    en.wikipedia.org/wiki/Tree_(graph_theory)

    When a directed rooted tree has an orientation away from the root, it is called an arborescence [3] or out-tree; [11] when it has an orientation towards the root, it is called an anti-arborescence or in-tree. [11] The tree-order is the partial ordering on the vertices of a tree with u < v if and only if the unique path from the root to v passes ...

  6. Blossom algorithm - Wikipedia

    en.wikipedia.org/wiki/Blossom_algorithm

    The forest F constructed by the find_augmenting_path() function is an alternating forest. [9] a tree T in G is an alternating tree with respect to M, if T contains exactly one exposed vertex r called the tree root; every vertex at an odd distance from the root has exactly two incident edges in T, and

  7. Rapidly exploring random tree - Wikipedia

    en.wikipedia.org/wiki/Rapidly_exploring_random_tree

    A rapidly exploring random tree (RRT) is an algorithm designed to efficiently search nonconvex, high-dimensional spaces by randomly building a space-filling tree. The tree is constructed incrementally from samples drawn randomly from the search space and is inherently biased to grow towards large unsearched areas of the problem.

  8. AOL

    search.aol.com

    The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.

  9. Ridders' method - Wikipedia

    en.wikipedia.org/wiki/Ridders'_method

    The formula below converges quadratically when the function is well-behaved, which implies that the number of additional significant digits found at each step approximately doubles; but the function has to be evaluated twice for each step, so the overall order of convergence of the method with respect to function evaluations rather than with ...