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  2. Fast-and-frugal trees - Wikipedia

    en.wikipedia.org/wiki/Fast-and-frugal_trees

    Fast-and-frugal tree or matching heuristic [1] (in the study of decision-making) is a simple graphical structure that categorizes objects by asking one question at a time. These decision trees are used in a range of fields: psychology , artificial intelligence , and management science .

  3. The old axiom is that 90% of a tree’s roots are in the top foot of soil. To some degree, they mirror the limb growth. Branches of most trees are relatively horizontal, live oaks being a classic ...

  4. List of NP-complete problems - Wikipedia

    en.wikipedia.org/wiki/List_of_NP-complete_problems

    Minimum degree spanning tree; Minimum k-cut; Minimum k-spanning tree; Minor testing (checking whether an input graph contains an input graph as a minor); the same holds with topological minors; Steiner tree, or Minimum spanning tree for a subset of the vertices of a graph. [2] (The minimum spanning tree for an entire graph is solvable in ...

  5. Issue tree - Wikipedia

    en.wikipedia.org/wiki/Issue_tree

    An issue tree showing how a company can increase profitability: A profitability tree is an example of an issue tree. It looks at different ways in which a company can increase its profitability. Starting from the key question on the left, it breaks it down between revenues and costs, and break these down into further details.

  6. 50 Science Trivia Questions People Always Get Wrong - AOL

    www.aol.com/50-science-trivia-questions-people...

    If you can answer 50 percent of these science trivia questions correctly, you may be a genius. The post 50 Science Trivia Questions People Always Get Wrong appeared first on Reader's Digest.

  7. 50+ Best Never Have I Ever Questions That Will Take ... - AOL

    www.aol.com/lifestyle/50-best-never-ever...

    Coming up with the best questions to ask your crush and making hilarious prank calls are fun ways to spend quality time with your crew. You can also enlist a game of "Never Have I Ever" to learn ...

  8. If a tree falls in a forest and no one is around to hear it ...

    en.wikipedia.org/wiki/If_a_tree_falls_in_a_forest...

    The tree will make a sound, even if nobody heard it, simply because it could have been heard. The answer to this question depends on the definition of sound. We can define sound as our perception of air vibrations. Therefore, sound does not exist if we do not hear it. When a tree falls, the motion disturbs the air and sends off air waves.

  9. Tree (abstract data type) - Wikipedia

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

    This unsorted tree has non-unique values (e.g., the value 2 existing in different nodes, not in a single node only) and is non-binary (only up to two children nodes per parent node in a binary tree). The root node at the top (with the value 2 here), has no parent as it is the highest in the tree hierarchy.