jess


 * //Jess//** is a rule engine and scripting environment written entirely in Sun's Java language by Ernest Friedman-Hill at Sandia National Laboratories in Livermore, CA. Using **//Jess//**, you can build Java software that has the capacity to "reason" using knowledge you supply in the form of declarative rules. **//Jess//** is small, light, and one of the fastest rule engines available. Its powerful scripting language gives you access to all of Java's APIs. **//Jess//** includes a full-featured development environment based on the award-winning Eclipse platform.
 * //Jess//** uses an enhanced version of the Rete algorithm to process rules. Rete is a very efficient mechanism for solving the difficult many-to-many matching problem (see for example //"Rete: A Fast Algorithm for the Many Pattern/ Many Object Pattern Match Problem", Charles L. Forgy, Artificial Intelligence **19** (1982), 17-37//.) **//Jess//** has many unique features including backwards chaining and working memory queries, and of course **//Jess//** can directly manipulate and reason about Java objects. **//Jess//** is also a powerful Java scripting environment, from which you can create Java objects, call Java methods, and implement Java interfaces without compiling any Java code.
 * //Jess//** can be licensed for commercial use, and is available at no cost for academic use. Contact Craig Smith at casmith@sandia.gov for prices and commercial licensing terms, or for a research based academic license.

 Version 7.1p2 (5 November 2008) DRAFT Ernest J. Friedman-Hill [|Sandia National Laboratories] Jess is a //rule engine// for the Java platform. To use it, you specify logic in the form of [|rules] using one of two formats: [|the Jess rule language] (prefered) or [|XML.] You also provide some of your own [|data] for the rules to operate on. When you [|run] the rule engine, your rules are carried out. Rules can create new data, or they can do anything that the Java programming language can do. Although Jess can run as a [|standalone program], usually you will [|embed the Jess library in your Java code] and manipulate it using [|its own Java API] or the basic facilities offered by the [|javax.rules API]. You can develop Jess language code in any text editor, but Jess comes with [|a full featured development environment] based on the award-winning[|Eclipse platform]. Jess is a registered trademark of Sandia National Laboratories. Java and all Java-based marks are trademarks or registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. Originally published as SAND98-8206. Distribution category UC-411.
 * [|Introduction]
 * [|Home]
 * [|Table of Contents]
 * [|Getting Started]
 * [|The JessDE Developer's Environment]
 * [|The Jess Language]
 * [|Jess Application Programming]
 * [|Reference]
 * Jess®**
 * //the Rule Engine for the Java™ Platform//**