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From Tim O'Brien <tobr...@discursive.com>
Subject Re: [math] Re: [PROPOSAL] Commons-math -- organization of initial code base
Date Mon, 12 May 2003 19:35:51 GMT
Robert,

I added a project.xml into math only to make things easier for people
who have grown accustomed to Maven's ease of use.  The project.xml was
copied from [codec]'s template.  I don't mean to ignore the mavenization
discussion, as I don't necessarily think we need to commit to a Maven
generated site.  Out of the box, running "maven dist:build" compiles,
tests, and builds the release tarballs.  

On another note, the build.properties.sample is a little out of date in
the jakarta-commons directory.  I think velocity has since upgraded a
number of dependencies.

Tim

On Mon, 2003-05-12 at 14:09, robert burrell donkin wrote:
> hi phil
> 
> could you remember to prefix all posts about math with [math] (most people 
> use filters on the subject).
> 
> i think i like the idea of breaking down into relatively self-contained 
> sub-packages. it seems that there might be later a need to be able to 
> break down into smaller, self contained libraries and if we're disciplined 
> from the start that's got to help.
> 
> i've committed some initial code submitted by phil so there's now 
> something to start arguing about :)
> 
> - robert
> 
> On Monday, May 12, 2003, at 03:28 PM, Phil Steitz wrote:
> 
> > I am thinking along the following lines re organization of the initial 
> > codebase for commons-math(assuming we decide to move forward).  Since I 
> > am trying to refactor the various odds and ends that I have to contribute 
> > along these lines, I would appreciate some feedback on the structure. 
> > Obviously,this is a very preliminary "straw man."  Any and all ideas are 
> > welcome.
> >
> > High-level organization
> > ------------------------
> >
> > commons-math
> >     analysis
> >     complex
> >     discrete
> >     linear
> >     simulation
> >     stat
> >
> > Contents of the subpackages
> > ---------------------------
> > Everything could probably initially be placed in one package, but I would 
> > like to at least settle on a conceptual model for how things are 
> > organized. It might also make sense in some cases to separate out an 
> > "Impl" package for different implementation strategies.
> >
> > analysis
> > --------
> > Commonly-used univariate numerical analysis techniques and useful 
> > formulas extending java.Math
> >
> > Target for initial release:
> >
> > * root finding
> > * polynomial interpolation
> > * error bounds estimation
> > * exponential growth and decay computations (set up for financial
> >   applications)
> >
> >
> > complex
> > -------
> > Representation and algebraic operations on complex numbers
> >
> > Target for initial release:
> >
> > * basic complex number class with algebraic operations
> >
> >
> > discrete
> > --------
> > Basic methods and models from discrete math
> >
> > Target for initial release:
> >
> > * binomial coefficients
> >
> >
> > linear
> > ------
> > Most commonly used numerical linear algebra techniques
> >
> > Target for the initial release:
> >
> > * basic real matrix class including algebraic operations and
> >   support for solving linear systems
> >
> >
> > simulation
> > ----------
> > Mathematical tools to support simulation
> >
> > Target for the initial release:
> >
> > * Data generation class capable of generating random numbers
> >   from uniform, gaussian, poisson, or exponential distributions; by
> >   replaying data from an input file; by resampling from a vector; or by
> >   generating random values from an empirical distribution
> >   based on an input file.
> >
> > stat
> > ----
> > Commonly-used statistical techniques
> >
> > Target for the initial release:
> >
> > * Univariate -- simple running-sums based univariate stats and
> >   confidence intervals not requiring all data values to be stored in
> >   memory and supporting a "rolling" capability (capability to base
> >   statistics on most recently observed values)
> > * Frequencies -- simple frequency counts/distribution.
> > * Regression -- simple linear regression and bivariate corellation
> > * Tests -- t-test, chi-square test
> > * Sampling -- select random samples with/without replacement from
> >   Collections
> > * Resampling -- boostrap confidence intervals
> >
> >
> > Phil
> >
> >
> >
> >
> > ---------------------------------------------------------------------
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> > For additional commands, e-mail: commons-dev-help@jakarta.apache.org
> >
> 
> 
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