NARS Implementations

Open-NARS 1.3.3 (June 2010)

Since January 2008, NARS has been developed as open source software at http://code.google.com/p/open-nars/.

It is a Java program that demonstrates the implemented NARS functionalities. You can either open a HTML file to run it as an applet, or download a JAR file (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 GUI guide and I/O format (Cached here).

Examples:

Representative single inference steps (Cached explanations for NAL1-7 and NAL-8, plus examples)
Representative multi-step inference processes (Cached explanation and examples)
Investigation of the Effectiveness of NARS in Video Game Scenarios (by David Lebson)
Translating DBpedia into Narsese (by Safi Haq)
Pattern Recognition in NARS (by Matthew Zaikowski)
Using NAL in Medical Diagnosis (by Seemal Awan)

After trying them, you can modify them, as well as make your own examples.

NAL 1.0 (August 2004)

It is a Prolog program that implements all the inference rules in NAL 1-6 (as specified in 2004), 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 (May 27, 2011)

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.