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About: Alpha max plus beta min algorithm     Goto   Sponge   NotDistinct   Permalink

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Type: Thingyago:WikicatApproximationAlgorithmsyago:WikicatRoot-findingAlgorithmsyago:Abstraction100002137yago:Act100030358yago:Activity100407535yago:Algorithm105847438yago:Event100029378yago:Procedure101023820yago:PsychologicalFeature100023100yago:YagoPermanentlyLocatedEntityyago:Rule105846932 New Facet based on Instances of this Class

The alpha max plus beta min algorithm is a high-speed approximation of the square root of the sum of two squares. The square root of the sum of two squares, also known as Pythagorean addition, is a useful function, because it finds the hypotenuse of a right triangle given the two side lengths, the norm of a 2-D vector, or the magnitude of a complex number z = a + bi given the real and imaginary parts. The approximation is expressed as where is the maximum absolute value of a and b, and is the minimum absolute value of a and b.