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[Savannah-hackers] submission of Cofi: A Java-Based Collaborative Filter
[Savannah-hackers] submission of Cofi: A Java-Based Collaborative Filtering Library - savannah.nongnu.org
Tue, 11 Nov 2003 09:30:34 -0500
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A package was submitted to savannah.nongnu.org
This mail was sent to address@hidden, address@hidden
Daniel Lemire <address@hidden> described the package as follows:
Package: Cofi: A Java-Based Collaborative Filtering Library
System name: cofi
Cofi: A Java-Based Collaborative Filtering Filtering Library
Collaborative filtering is the process of predicting ratings based on a
database of ratings from various users. It is widely applicable to e-Commerce,
e-Learning, and so on.
Currently, programmers who want to use collaborative filtering have to read the
literature and implement their own algorithms. More often than not, programmers
probably design their own algorithms and they will generally produce suboptimal
algorithms. We want to build a foundation of already tested algorithms and
documented that can be used in a wide range of contexts from research to
The guiding principle is that the design should be thin. Cofi doesn\\\'t want
to be all things for all people. So the focus is on delivering very few lines
of code, and to rely on the programmer for providing the necessary glue.
There is one open source Java-based collaborative filtering library available
called CFEngine written by professor Jon Herlocker. CFEngine is somewhat more
extensive than Cofi and aims to be the Apache of collaborative filtering.
CFEngine is probably going to be licensed under a BSD-like license though this
is not explicit. The design goals are different since CFEngine wants to provide
a complete solution to collaborative filtering needs which Cofi doesn\\\'t. We
also expect the algorithms to differ.
GPL, of course.
Who are we?
The project is lead by Daniel Lemire, researcher at the National Research
Council of Canada.
Where\\\'s the source?
You can download our Java source package. It requires gnu.trove (LGPL) and
junit (CPL) libraries. Some code expects JSci (LGPL) though it isn\\\'t
necessary to use the library.
The library is used as part of RACOFI web site which is a live Music
Recommender site and has been used for research ( COLA and IR). While it
isn\\\'t a mature library, it is certainly quite usable in many real-world
Other Software Required:
We require the gnu.trove (LGPL) and junit (CPL) libraries. Some code expects
JSci (LGPL) though it isn't necessary.
We support GCJ (free java environment) under gcc 3.2.2 (and above).
I think this would be the first and only Java-Based collaborative filtering
library to be GPL.
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