[
https://issues.apache.org/jira/browse/MATH-765?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Sébastien Brisard updated MATH-765:
-----------------------------------
Description:
{panel:title=Warning|borderStyle=solid}
This is not a bug report, but rather a summary of all discussions which have
taken place on the mailing list regarding the refactoring of the vector and
matrix classes. Indeed, it has been argued many times that the {{RealVector}}
and {{RealMatrix}} interfaces are really cluttered, and could benefit from
other approaches (like functional programming).
The description of this ticket will be updated as the discussion progresses on
the mailing-list, and new JIRA tickets will be created to carry out the "real"
work. In order to keep this ticket tidy, contributors should refrain from
commenting on this website. Instead, messages should be posted on the dev
mailing-list.
{panel}
h1. The current API (version 3.0)
In this section, the current interfaces for vectors and matrices are compared.
Vectors and matrices are two mathematical objects which are very close in
nature. Their implementations should therefore be as similar as possible. The
methods will be sorted as follows
* methods reflecting the mathematical structure of vector space: addition,
multiplication by a scalar, matrix-vector product, ...
* methods reflecting the mathematical structure of euclidean space
* ...
h2. Methods reflecting the mathematical structure of vector space
|| {{RealVector}} || {{RealMatrix}}
|| Comments ||
| {{RealVector add(RealVector v)}} | {{RealMatrix add(RealMatrix m)}}
| |
| {{int getDimension()}} | {{int getRowDimension()}},\\ {{int
getColumnDimension()}} | |
| {{RealVector mapMultiply(double d)}} | {{scalarMultiply(double d)}}
| |
| | {{multiply(RealMatrix m)}}
| |
| | {{double[] operate(double[])}}
| |
| | {{RealVector operate(RealVector)}}
| |
| | {{double[] preMultiply(double[])}}
| |
| | {{RealMatrix preMultiply(RealMatrix)}}
| |
| | {{RealVector preMultiply(RealVector)}}
| |
h2. Methods reflecting the mathematical structure of euclidean space
was:
{panel:title=Warning|borderStyle=solid}
This is not a bug report, but rather a summary of all discussions which have
taken place on the mailing list regarding the refactoring of the vector and
matrix classes. Indeed, it has been argued many times that the {{RealVector}}
and {{RealMatrix}} interfaces are really cluttered, and could benefit from
other approaches (like functional programming).
The description of this ticket will be updated as the discussion progresses on
the mailing-list, and new JIRA tickets will be created to carry out the "real"
work. In order to keep this ticket tidy, contributors should refrain from
commenting on this website. Instead, messages should be posted on the dev
mailing-list.
{panel}
> Refactoring the vector and matrix classes
> -----------------------------------------
>
> Key: MATH-765
> URL: https://issues.apache.org/jira/browse/MATH-765
> Project: Commons Math
> Issue Type: Improvement
> Affects Versions: 4.0
> Reporter: Sébastien Brisard
> Labels: api-change, linear
>
> {panel:title=Warning|borderStyle=solid}
> This is not a bug report, but rather a summary of all discussions which have
> taken place on the mailing list regarding the refactoring of the vector and
> matrix classes. Indeed, it has been argued many times that the {{RealVector}}
> and {{RealMatrix}} interfaces are really cluttered, and could benefit from
> other approaches (like functional programming).
> The description of this ticket will be updated as the discussion progresses
> on the mailing-list, and new JIRA tickets will be created to carry out the
> "real" work. In order to keep this ticket tidy, contributors should refrain
> from commenting on this website. Instead, messages should be posted on the
> dev mailing-list.
> {panel}
> h1. The current API (version 3.0)
> In this section, the current interfaces for vectors and matrices are
> compared. Vectors and matrices are two mathematical objects which are very
> close in nature. Their implementations should therefore be as similar as
> possible. The methods will be sorted as follows
> * methods reflecting the mathematical structure of vector space: addition,
> multiplication by a scalar, matrix-vector product, ...
> * methods reflecting the mathematical structure of euclidean space
> * ...
> h2. Methods reflecting the mathematical structure of vector space
> || {{RealVector}} || {{RealMatrix}}
> || Comments ||
> | {{RealVector add(RealVector v)}} | {{RealMatrix add(RealMatrix m)}}
> | |
> | {{int getDimension()}} | {{int getRowDimension()}},\\ {{int
> getColumnDimension()}} | |
> | {{RealVector mapMultiply(double d)}} | {{scalarMultiply(double d)}}
> | |
> | | {{multiply(RealMatrix m)}}
> | |
> | | {{double[] operate(double[])}}
> | |
> | | {{RealVector operate(RealVector)}}
> | |
> | | {{double[] preMultiply(double[])}}
> | |
> | | {{RealMatrix
> preMultiply(RealMatrix)}} | |
> | | {{RealVector
> preMultiply(RealVector)}} | |
> h2. Methods reflecting the mathematical structure of euclidean space
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
