NARCL 0.4.1

[ Posted by Urban Hafner Wed, 10 Aug 2005 11:47:00 GMT ]

This release just adds a better README, actually a README that should be useable.

Download: narcl-0.4.1.tar.bz2

Have fun.

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NARCL 0.4.0

[ Posted by Urban Hafner Sun, 07 Aug 2005 17:07:39 GMT ]

This is the release of version 0.4.0 of NARCL.

The tarball can be found here: narcl-0.4.0.tar.bz2.

The darcs repository is at http://www.cip.ifi.lmu.de/~hafner/darcs/narcl

What’s new?

This release is almost a complete rewrite of the whole library. The main purpose was the speedup of the rule mining. I have come quite far in this direction but I am by no means finished with it.

The aim is to allow association rule mining of data sets with at least 125,000 transactions and about the same number of items in reasonable time.

Have fun with the program and of course feedback is welcome.

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First release of NARCL

[ Posted by urban Sat, 02 Apr 2005 12:31:36 GMT ]

This is the announcement for NARCL version 0.1.0.

What is NARCL?

NARCL stands for Negative Association Rules in Common Lisp. As the name suggests it is a program to find association rules and it is written in Common Lisp.

Why did you write it?

At the time where I started writing it no program existed that could compute negative association rules. But I may eventually need a program like that in the future.

How mature is the program?

Well, its version is 0.1.0 so you can imagine. What works is the computation of negative and positive association rules on a given set of transactions. But it is very slow, due to the use of rather inefficient data structures. Nonetheless it might be useful to some people, so here it is.

What license does it have?

The code is licensed under the LLGPL which is essentially the LGPL with some Lisp specific additions and clarifications.

Where can I download it?

You can download the source as a compressed tar ball from my web site:

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