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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 ...
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
Top-down vs bottom-up proteomics. Top-down proteomics is a method of protein identification that either uses an ion trapping mass spectrometer to store an isolated protein ion for mass measurement and tandem mass spectrometry (MS/MS) analysis [1] [2] or other protein purification methods such as two-dimensional gel electrophoresis in conjunction with MS/MS. [3] Top-down proteomics is capable ...
Bottom-up integration testing, in software testing; Top-down and bottom-up design, strategies of information processing and knowledge ordering; Bottom-up proteomics, a laboratory technique involving proteins; Bottom Up Records, a record label founded by Shyheim; Bottom-up approach of the Holocaust, a viewpoint on the causes of the Holocaust
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.
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.
There is limited protein sequence coverage by identified peptides, loss of labile PTMs, and ambiguity of the origin for redundant peptide sequences. [7] Recently the combination of bottom-up and top-down proteomics, so called middle-down proteomics, is receiving a lot of attention as this approach not only can be applied to the analysis of large protein fragments but also avoids redundant ...
Two main approaches are used in nanotechnology. In the "bottom-up" approach, materials and devices are built from molecular components which assemble themselves chemically by principles of molecular recognition. [24] In the "top-down" approach, nano-objects are constructed from larger entities without atomic-level control. [25]