Gilles created MATH-1346:
----------------------------
Summary: "ValueServer" has various shortcomings
Key: MATH-1346
URL: https://issues.apache.org/jira/browse/MATH-1346
Project: Commons Math
Issue Type: Improvement
Reporter: Gilles
Priority: Minor
Fix For: 4.0
* It is inefficient as it recreates a distribution instance for each sample
(through calls to "RandomDataGenerator").
* It seems to be an aggregation of "EmpiricalDistribution,
"ExponentialDistribution", "NormalDistribution" and "UniformDistribution".
* Main purpose seems to allow sampling from those distributions where the
parameters ("mu" and "sigma") are mutable (but are set to identical values for
all distributions).
* Then, there is a basic problem in that those instance variables are not
always meaningful (for the different modes): field "sigma" only applies to the
"Gaussian mode" and "mu" does not apply to the "digest mode".
* The only non-trivial addition (wrt using the distribution classes directly)
is the file IO but usability is reduced because the class imposes a specific
format and encoding.
* The name is deceiving as one could easily assume that the server can be
accessed from multiple "client" threads.
IMO, a math library should not be concerned with how data is loaded from
external sources (such as files), hence this class should perhaps be moved to
the "examples" part of the repository.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
