Tom created MATH-1494:
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Summary: Find exponential curve fit to data using Jacquelin method
Key: MATH-1494
URL: https://issues.apache.org/jira/browse/MATH-1494
Project: Commons Math
Issue Type: New Feature
Reporter: Tom
Fix For: 4.0
Function to fit an exponential decay without initial guessing
Based on [https://stackoverflow.com/a/39436209/545346]
Original source: Regressions et Equations integrales, Jean Jacquelin
[https://www.scribd.com/doc/14674814/Regressions-et-equations-integrales]
The class will allow for the usual variety of providing inputs of x and y.
Once computed the instance can be queried for Amplitude, Beta, and Constant,
defining a curve for y= Amplitude * exp(Beta * x) + Constant
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