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Illustration of bottom up and top down approach to heap sort. Bottom–up and top–down are both strategies of information processing and ordering knowledge, used in a variety of fields including software, humanistic and scientific theories (see systemics), and management and organization. In practice they can be seen as a style of thinking ...
English: This picture shows the difference in time complexity between building a heap ('heapify') from the bottom up and form top down. The number in each circle shows the maximum times of swapping needed to add the respective node into the heap.
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.
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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
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.
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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.