Fast Hadamard Transform
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Key: MATH-215
URL: https://issues.apache.org/jira/browse/MATH-215
Project: Commons Math
Issue Type: New Feature
Affects Versions: 1.2, 1.1, 1.0
Reporter: Daniel Kuan
To date, the mathematical transforms package of Commons Maths,
org.apache.commons.math.transform, only contains implementations for the
Fourier, Sine, and Cosine transforms.
This issue serves to propose and track the creation of an implementation for
the Hadamard transform.
Definition of the hadamard transform:
http://en.wikipedia.org/wiki/Hadamard_transform#Definition
Unfortunately, Mathworld does not provide a very detailed definition.
http://mathworld.wolfram.com/HadamardTransform.html
An elegant algorithm for the fast hadamard transform can be found here:
http://www.archive.chipcenter.com/dsp/DSP000517F1.html
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