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Prefix sums are trivial to compute in sequential models of computation, by using the formula y i = y i − 1 + x i to compute each output value in sequence order. However, despite their ease of computation, prefix sums are a useful primitive in certain algorithms such as counting sort, [1] [2] and they form the basis of the scan higher-order function in functional programming languages.
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The graph represents the subtree local prefix sums of the left and right subtree of a processing element (PE) which are passed to higher level PEs during the upward phase and the partial prefix sums which are passed down during the downward phase.
Following the increasing of Internet usage in Vietnam, many online encyclopedias were published. The two largest online Vietnamese-language encyclopedias are Từ điển bách khoa toàn thư Việt Nam, a state encyclopedia, and Vietnamese Wikipedia, a project of the Wikimedia Foundation.
Prefix sum, in computing; Pushout (category theory) (also called an amalgamated sum or a cocartesian square, fibered coproduct, or fibered sum), the colimit of a diagram consisting of two morphisms f : Z → X and g : Z → Y with a common domainor pushout, leading to a fibered sum in category theory; QCD sum rules, in quantum field theory
Từ điển bách khoa Việt Nam (lit: Encyclopaedic Dictionary of Vietnam) is a state-sponsored Vietnamese-language encyclopedia that was first published in 1995. It has four volumes consisting of 40,000 entries, the final of which was published in 2005. [1] The encyclopedia was republished in 2011.
If my functional programming knowledge correctly serves me, the statement in the first section about prefix sum being the fold of addition is incorrect. I believe it is a scan of addition, however wikipedia does not have a page for scan. 128.138.230.183 15:14, 31 January 2012 (UTC)
Encyclopedic Dictionary of Vietnam From other capitalisation : This is a redirect from a title with another method of capitalisation. It leads to the title in accordance with the Wikipedia naming conventions for capitalisation , or it leads to a title that is associated in some way with the conventional capitalisation of this redirect title.