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  2. Bottom-up and top-down design - Wikipedia

    en.wikipedia.org/wiki/Bottom-up_and_top-down_design

    Information flow top-down and bottom-up in leadership. In the fields of management and organization, the terms "top-down" and "bottom-up" are used to describe how decisions are made and/or how change is implemented. [17] A "top-down" approach is where an executive decision maker or other top person makes the decisions of how something should be ...

  3. Bottom-up parsing - Wikipedia

    en.wikipedia.org/wiki/Bottom-up_parsing

    Top-down parsing eagerly decides what a construct is much earlier, when it has only scanned the leftmost symbol of that construct and has not yet parsed any of its parts. Left corner parsing is a hybrid method that works bottom-up along the left edges of each subtree, and top-down on the rest of the parse tree.

  4. Top-down - Wikipedia

    en.wikipedia.org/wiki/Top-down

    Top-down and bottom-up design of information ordering; Top-down parsing, a parsing strategy beginning at the highest level of the parse tree Top-down parsing language, an analytic formal grammar to study top-down parsers; Top-down perspective, a camera angle in computer and video games; Top-down shooter, a subgenre of video games

  5. Hierarchical clustering - Wikipedia

    en.wikipedia.org/wiki/Hierarchical_clustering

    Agglomerative: This is a "bottom-up" approach: Each observation starts in its own cluster, and pairs of clusters are merged as one moves up the hierarchy. Divisive: This is a "top-down" approach: All observations start in one cluster, and splits are performed recursively as one moves down the hierarchy.

  6. Trophic cascade - Wikipedia

    en.wikipedia.org/wiki/Trophic_cascade

    Trophic cascades are powerful indirect interactions that can control entire ecosystems, occurring when a trophic level in a food web is suppressed. For example, a top-down cascade will occur if predators are effective enough in predation to reduce the abundance, or alter the behavior of their prey, thereby releasing the next lower trophic level from predation (or herbivory if the intermediate ...

  7. Work domain analysis - Wikipedia

    en.wikipedia.org/wiki/Work_domain_analysis

    The abstraction hierarchy is constructed by considering the work system's objectives (top-down) and the work system's capabilities (bottom-up). The diagram is constructed based upon a range of data collection opportunities. The exact data collection procedure is dependent on the domain in question and the availability of data.

  8. Tree automaton - Wikipedia

    en.wikipedia.org/wiki/Tree_automaton

    For a bottom-up automaton, a ground term t (that is, a tree) is accepted if there exists a reduction that starts from t and ends with q(t), where q is a final state. For a top-down automaton, a ground term t is accepted if there exists a reduction that starts from q(t) and ends with t, where q is an initial state.

  9. File:Bottom-up vs top down.svg - Wikipedia

    en.wikipedia.org/wiki/File:Bottom-up_vs_top_down.svg

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.