Dr Jano van Hemert, FRSE

Science, software, scripts, etc.

Feb 16, 2004 - 1 minute read



  1. To facilitate as a suit of programs to create and analyse randomly created binary constraint satisfaction problems, for those who do not like to work with libraries for any reason a suite of programs is included that provides a simple interface to the library. With these programs it is easy to create a set of random problem instances, to verify solutions and to analyse instances on a number of features.

  2. To be used as a library to implement and test new or existing constraint satisfaction solving techniques, the library part has an extended documentation of its class hierarchy that helps new developers on their way creating new tools or solving techniques for binary constraint satisfaction. At the same time the library allows testing using a number of theoretical models.

  3. To be freely available for anyone, the library and programs that come with it are all licensed under the Gnu Public License, ensuring free use forever.


Changes with previous (1.7.0) version: Added Model RB by Xu and Li; works now with GCC-3.3.2; changed default output from list to matrix


Apr 1, 2001 - 1 minute read

Evolving abstract paintings - eArtWeb

This evolutionary art system is designed to be as general as possible. It makes it an easy to extend system, open to many different forms of art. The system also utilises a database to store the actions of its visitors, thereby creating an interesting pool of data for studying subjective user preferences regarding two dimensional visual art. It is completely written in Perl, making it very flexible and easy to maintain.


Mar 27, 2001 - 1 minute read



This page will transform your Netscape (Communicator’s) bookmark file into a Palm Pilot Database file suitable for List DB. This way your can carry around your bookmarks in an easy to view way without having to Graffiti all those bookmarks by hand. Just enter your file in the box (or use the browse button) and click on ‘Get PDB file’. A download window will appear with the file.


Aug 17, 1999 - 1 minute read



Converts the mail aliases of Elm to a list of aliases suited for the Mutt mail reader.


May 1, 1999 - 1 minute read

Mondriaan Art

This application produces Mondriaan (also known as Mondrian) like art. To help people remember what Mondriaan’s art looks like the site is in style of the paintings he made during his last years. Black horizontal and vertical lines that intersect forming rectangular areas that are coloured exclusively using white, black or one of the primary colours. Static Linux version available.

Mondriaan Art