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JaCoP - Java Constraint Programming solver
JaCoP 4.1 PDF Print E-mail
Written by Radoslaw Szymanek   
Sunday, 18 May 2014 20:00
Dear users,

We have just released JaCoP 4.1. Feel free to clone JaCoP repository - https://github.com/radsz/jacop and contribute. In this release we introduce floating-point variables (FloatVar) and constraints on these variables. The methods used in floating point domain of JaCoP are based on floating point intervals and consistency methods build around them. We provide a set of basic arithmetic constraints as well as square root, absolute value, trigonometric constraints (sin, cos,tan, asin, acos, atan), exponential constraint and natural logarithm. Moreover element constraint and equation between integer and float variables makes it possible to build models that mix different JaCoP variables. We have also included experimental implementation of several features that is not consider as final and can change in future.

The floating point domain is fully integrated with JaCoP solver. The same search methods can be used as well as floating point variables can be used as cost functions for minimization. We provide also specialized optimization methods that are specially developed for floating point variables.

The released version provides also flatzinc interpreter for floating point variables. Minizinc models containing float variables can be compiled using standard mzn2fzn compiler and used by JaCoP solver.

This release fixes also few bugs.

Best regards,
JaCoP Core Developer Team
 
JaCoP 4.0.0.RC1 on Github PDF Print E-mail
Written by Radoslaw Szymanek   
Friday, 16 August 2013 09:02

Dear all, 

We decided to move the source code for the newest version of JaCoP (4.0.0.RC1) to Github. We are happy users of Git and Github is an obvious choice. Feel free to clone JaCoP repository - https://github.com/radsz/jacop and contribute. The changes within the newest JaCoP 4.0.0.RC1 are published here.

best regards,

JaCoP core developer team 

Last Updated on Monday, 02 December 2013 18:27
 
JaCoP version 3.2 released PDF Print E-mail
Written by Krzysztof Kuchcinski   
Monday, 16 April 2012 07:25

Dear users,

We have just released JaCoP 3.2. This is a release that fixes few bugs as well as provides an interface from Scala to JaCoP. Examples using Scala are provided in ExamplesScala package.

Hakan Kjellrstand at his blog discusses Scala wrapper for JaCoP as well as provides additional examples at his repository of Scala examples

best regards,

Core Developer Team

Last Updated on Monday, 16 April 2012 18:32
 
AMPL Driver for JaCoP PDF Print E-mail
Written by Radoslaw Szymanek   
Friday, 16 August 2013 09:02

Dear all, 

We are happy to announce that Victor Zverovich from AMPL has created a driver that allows to use JaCoP from AMPL. As most AMPL drivers, the jacop driver is open source. This driver is available from the AMPL repository on GitHub: https://github.com/vitaut/ampl/tree/master/solvers/jacop .

Feel free to check this driver and contribute in any manner possible. It is said to be fairly complete and implementing all of the AMPL constraint programming extensions and a set of options.

We would like to thank Victor and AMPL for their work.

best regards,

JaCoP core developer team 

 
JaCoP Consultancy PDF Print E-mail
Written by Radoslaw Szymanek   
Saturday, 18 September 2010 08:59

Dear users,

We are getting more and more emails asking for help. We do help by writing back to you but we would like to encourage you to submit your questions/suggestions to Help forum available on SourceForge. Hopefully we will create a vibrant community of users helping each other giving us more time to work on improving JaCoP.

We also are happy to provide paid consultancy to our industrial users. If you need help of CP experts in your projects to make sure that you efficiently and quickly can get JaCoP/CP applied then feel free to contact us [ radoslaw dot szymanek at gmail dot com ]. The paying customers will have a priority in getting required features implemented so our product will be more and more usable for you. 

best regards,

Radoslaw Szymanek

Last Updated on Monday, 16 April 2012 18:14
 
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