Open NARS
Since January 2008, NARS is developed as open source software at http://code.google.com/p/open-nars/.
Open-NARS 1.1.2 (January 18, 2009)
This Java program demonstrates some of the implemented NARS functionalities. You can either click here to run it as an applet, or download NARS.jar (about 300K), and run it locally as an application by typing the following line in a command window:
java -jar "NARS.jar"
To understand how the program works, it is strongly recommended to start with the user's guide. Two example files are available, one showing representative single inference steps, and the other representative multi-step inference processes. After trying them, you can modify them, as well as make your own examples.
NAL 1.0 (August 24, 2004)
NAL is a Prolog program that implements all the inference rules in NAL 1-6, without memory structure and control mechanism for multiple-step inference. The source code comes with a user's guide and examples. The examples are tested with SWI-Prolog.
NAL truth-value functions (June 25, 2007)
All the NAL truth-value functions are collected in a spreadsheet file NAL-TruthFunctions.xls.
The file contains three tables showing the relations among uncertainty measurements, the truth-value functions of the one-premise rules, and the truth-value functions of the two-premise rules, respectively. In each table, the input values can be modified, and the outputs of the functions change accordingly. The system parameters used in the functions can also be adjusted.