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Overview

This web page is dedicated to providing information and news on the CLIPS rule-based language developed by NASA's Johnson Space Center.

CLIPS is a rule-based language that was developed by NASA's Johnson Space Center. The language is available free-of-charge with source code from numerous Web sites.  Several of the more popular download sites are provided below.

NASA CLIPS Resources

Resource

Description

CMU CLIPS Repository - Downloads Provides a repository of CLIPS versions, patches, and references.
http://clipsrules.sourceforge.net/ Information, source code, binaries, latest patches, CLIPS links...

The Parallel Production System - Thesis in HTML format

This document discusses how to parallelize a CLIPS-like rule-based language with a set of relevant research references at the end of the document. It also provides a nice overview of expert systems and how the Rete pattern matching algorithm works with diagrams.

OPS-2000

One of the more popular commercial rule-based languages of the late 1980s is now online for free: forward chaining and backward chaining.  PPS was the research that led to OPS-2000.  This software was not based on CLIPS.  This was Frank Lopez's fourth RETE-based language: his final masterpiece.

NEW CLIPS Releases

Since 1986, Gary Riley, Brian Donnell, and the rest of the NASA CLIPS team have driven the delivery of all CLIPS releases from CLIPS 2.0 to CLIPS 6.0.

CLIPS Books

Background

This web page is maintained by Frank Lopez.

After designing and developing CLIPS 1.0 in 1985 for NASA, Mr. Lopez created several other rule-based languages.

  • CLIPS 1.0

    • NASA CLIPS 1.0 was created in the Spring of 1985 while Mr. Lopez was a NASA CO-OP employee.

    • NASA, Johnson Space Center, Houston, Texas, 1985

    • NASA CLIPS 1.0 was created on the second floor of NASA's Mission Control Center building in Houston. It was literally created within 30 feet of the Mission Control consoles you see on television, or may have seen in person if you have visited the Johnson Space Center in Houston.

    • The first CLIPS rule fired in March 1985 on an HP 9000 running UNIX.

    • The first real program coded using CLIPS was developed by the Purdue University Electrical Engineering department in 1985.

    • The first proposed name for NASA CLIPS was "NAIL" (NASA's AI Language).

  • CLIPS-2

    • Purdue University, 1985-1986

    • different release than NASA CLIPS 2.0

Mr. Lopez is the founder of Silicon Valley One, Online Planet, Intellipro International (TM), as well as a NASA Alumni, Microsoft Alumni, and Oracle Alumni.


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