Bayesian Classification of CPAN Module Failures (Re: Module dependencies and test results)

[David Cantrell]

On Sun, Aug 05, 2007 at 12:29:39PM +0100, Andy Wardley wrote:

> P(deps) is the product of P(dep) for dep over deps, and P(dep) is the 
> probability of a module appearing as a dependency.

The data I'm spitting out are insufficient for calculating this.  If
module A depends on B and C, both of which depend on D, then D appears
as a dependency twice, but I only list it once.  Also I'm not convinced
that the rest of the sums are right, given that if D fails when you try
to install it as a dependency of B, then the probability of it failing
when you try to install it as a dependency of C is 1 - these are not
independent failures.

-- 
David Cantrell | Hero of the Information Age

"IMO, the primary historical significance of Unix is that it marks the
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                         -- Russ Holsclaw in a.f.c