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https://issues.apache.org/jira/browse/MATH-1656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17760898#comment-17760898
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Gilles Sadowski commented on MATH-1656:
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bq. [...] It is not practical to extends MathRuntimeException that require
Localizable in constructor.
Quite right.
Eventually we concluded that following the JDK semantics was more useful than a
shared infrastructure (requiring that all CM exceptions inherit from
{{MathRuntimeException}}) imposing a maintenance burden for a feature (French
localization) which no one uses (anymore).
bq. [...] exemple of new style *Exception.
All the new (recent) math-related components/modules try to only expose the
standard exception types.
See e.g. how
[{{FastFourierTransform}}|https://github.com/apache/commons-math/blob/master/commons-math-transform/src/main/java/org/apache/commons/math4/transform/FastFourierTransform.java]
uses
[{{TransformException}}|https://github.com/apache/commons-math/blob/master/commons-math-transform/src/main/java/org/apache/commons/math4/transform/TransformException.java]
but the latter is package-private.
The same pattern is at play in "Commons Numbers" (see e.g. the
[commons-numers-gamma|https://github.com/apache/commons-numbers/tree/master/commons-numbers-gamma/src/main/java/org/apache/commons/numbers/gamma]
module).
Alternatively, "Commons Geometry" directly throws instances of the standard JDK
exception in most cases; sometimes, it defines custom types in an "internal"
package (not to be used by application developers): See e.g.
[{{GeometryInternalError}}|https://github.com/apache/commons-geometry/blob/master/commons-geometry-core/src/main/java/org/apache/commons/geometry/core/internal/GeometryInternalError.java]
in
[{{WelzlEncloser}}|https://github.com/apache/commons-geometry/blob/master/commons-geometry-enclosing/src/main/java/org/apache/commons/geometry/enclosing/WelzlEncloser.java]
class.
> Classical multivariate optimizers (gradient descent, Raphson-Newton, BFGS)
> are missing
> --------------------------------------------------------------------------------------
>
> Key: MATH-1656
> URL: https://issues.apache.org/jira/browse/MATH-1656
> Project: Commons Math
> Issue Type: Wish
> Components: legacy
> Affects Versions: 4.0-beta1
> Reporter: François Laferrière
> Priority: Major
> Labels: features
> Attachments: MATH-1656-GradientDescent-Newton-BFGS-v2.0.zip,
> MATH-1658-GradientDescent-Newton-BFGS-v3.0.patch,
> MATH-1658-GradientDescent-Newton-BFGS.patch, Screenshot from 2023-07-10
> 12-13-38.png
>
>
> Some classical multivariate such as
> * gradient descent,
> * Raphson-Newton,
> * BFGS
> are missing.
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