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Re: The Problem with Non-Functional Metrics

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June 30, 2008 13:03
Re: The Problem with Non-Functional Metrics
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On Monday 30 June 2008 12:50:09 Eric Wilhelm wrote:

> The kwalitee metrics should be useful data points when selecting between
> multiple modules, which means that the searcher (me) makes the
> decisions about which ones are important.

I don't think that's possible.

Where CPANTS works now is identifying actual, functional problems with 
distributions: missing licensing information, not extractable, POD errors, 
invalid META.yml, et cetera.

Where CPANTS doesn't work is attempting to bolt on several other 
highly-ambiguous metrics in order to turn the ranking into a differentiator 
between similar distribution.

At best, you can identify pros of a distribution, such as that OS 
distributions have packaged it and other distributions rely on it.

Yet those are not strong differentiators, and they're horribly ambiguous.  At 
best, they're data points with which a potential user can say "Hm, I can see 
that this is an advantage."

Unlike the functional CPANTS metrics, their lack does not imply a 
corresponding disadvantage.

Conflating the two types of metrics leads to problems.

-- c

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