Dear list members,
A new version of the QCA package is now on CRAN.
The QCA package implements the Quine-McCluskey algorithm for boolean
minimizations, according to the Qualitative Comparative Analysis.
Along with the additional improvements in version 0.3-1 (soon to be released
on CRAN), this code is about 100 times faster than the previous
"major"
release (0.2-6). It can now reasonably work with 11 binary variables, finding
a complete (and exact) solution in less than 2 minutes.
This dramatic increase in speed is due to using a mathematical reduction
instead of an algorithmic one. This approach openes the way for _exact_
multi-value minimizations, and an even better (and faster) approach is
searched for the future versions.
Best,
Adrian
--
Adrian Dusa
Romanian Social Data Archive
1, Schitu Magureanu Bd
050025 Bucharest sector 5
Romania
Tel./Fax: +40 21 3126618 \
+40 21 3120210 / int.101
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