Inverse condition number
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Key: MATH-602
URL: https://issues.apache.org/jira/browse/MATH-602
Project: Commons Math
Issue Type: Improvement
Affects Versions: 2.2, 3.0
Environment: All
Reporter: greg sterijevski
Priority: Minor
In SingularValueDecompositionImpl, the condition number is given as the ratio
of the largest singular value to the smallest singular value. While this is the
correct calculation, because of concerns over rank deficiency, researchers have
traditionally used the inverse of the condition number as a more stable
indicator of rank deficiency.
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