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Posted to issues@commons.apache.org by "Gilles (JIRA)" <ji...@apache.org> on 2016/03/29 23:15:26 UTC

[jira] [Created] (MATH-1353) "EmpiricalDistribution" has various shortcomings

Gilles created MATH-1353:
----------------------------

             Summary: "EmpiricalDistribution" has various shortcomings
                 Key: MATH-1353
                 URL: https://issues.apache.org/jira/browse/MATH-1353
             Project: Commons Math
          Issue Type: Improvement
            Reporter: Gilles
            Priority: Minor
             Fix For: 4.0


* Class uses file IO (CM should not be concerned with data persistence)
* Class uses the "java.net" API (ditto)

I'd think that the core functionality could be provided without supporting data loading (from a file or a URL).

Data input would be via any of
* Collection
* Iterable
* Stream (Java 8)

A redesign goal should be to make the class immutable.
E.g. data source must be set in the constructor (rather than via a "load" method); there would thus be a one-to-one correspondence between data source and distribution instance.




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