CLIPS Rules

Here (defrule) is the command for defining a new rule, which has the header stability. The next line is the left-hand side of the rule, here consisting of a single condition. The = notation is similar to a then statement in a conventional programming language. The result of a successful match is to perform the action described in the fourth line, which is the creation of a new fact. The system interprets this rule as follows  

If compound type is aromatic, then stability is high. 

The user interaction scenario is similar to the one described previously. We can have a look at the rule by using the (ppdefrule) command  

Looking at the facts currently stored, we will get the following  

To execute our program, we just need to enter the (run) command and to check the facts  

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CLIPS Rules are conditional statements in CLIPS used in the inference process in the form defrule rulename (if-statement condition) => (then-statement). 

The video clip at www. brightredbooks.net will help you understand the Pauli exclusion principle, the aufbau principle and Hund s rule. 

As a general rule, never attempt to remove liquid from a container which is sealed under inert gas, unless you have pressurized the container with inert gas first (Fig. 6.2a). Also, whenever you are using ground glass joints connected under pressure always secure them with either plastic (Bibby-type) clips, elastic bands or springs. 

In Sect. 3.2, an integrator tool for the coupling of the process simulator Aspen Plus [518] and the CAE system Comos PT [745] is described. The integration is driven by integration rules, which have been partially derived from the CLiP partial models Processing Subsystem and Mathematical Model, as explained in [15]. See also Sect. 6.3, where a more recent approach to derive such integration rules is described. 

Like CLiP, OntoCAPE can be used to derive integration rules for the integrator tools developed by subproject B2 (cf. Sect. 3.2). Section 6.3 describes the approach in detail. 

C Language Integrated Production System (CLIPS) is a programming language shell designed for rule-based, object-oriented, and procedural software development. 

JESS is a superset of the CLIPS programming language for the Java platform using pattern matching to continuously apply rules to facts. 

Throughout this paper we have used an idealised notation for both the ADT operations and the production rules. In the formal specification of the ADT operations we have used a notation in the style of VDM-SL (5) but supplemented it with conventional mathematical notation. We have also made liberal use of auxiliary functions to mask inessential detail. Further work is underway to explore in detail the development of a suitable and consistent notation which will permit ADT specifications to be recast in the notation of a powerful expert system such as CLIPS (6) and to investigate a means of constructing and analysing the directed graph referred to in section 3. 

Normal glass laboratory apparatus can as a rule be used for distillation at a pressure up to 2 atm if precautions are taken. All ground joints should be secured by strong spring clips. Fig. 217 shows a pressure tap, the cone of which is kept in its seating by a strong spring. 

While the data gave little reason for concern over the exposure of the general population to the field in a chlor-alkali plant, it is possible for the field to interfere with the operation of low-power electronic devices. Cardiac pacemakers are one example. The ACGIH in the same list of TLVs referred to above suggested a value of 5 G for persons with these devices. Adams reported that one company had set its own limit of 1G. Since this is a small multiple of the normal background, the rule effectively bars those with pacemakers from approaching a cell room. While not covered specifically by these rules, there should also be special concern for those who wear or carry other medical devices such as aneurysm clips, suture staples, and prostheses. These can respond to forces produced by stronger fields, but no definite limits have been set. 

There are several categories of expert systems, but by far the most popular are the rule-based expert systems. Most rule-based expert systems are created with an expert system shell. The first successful rule-based expert system shell was the OPS 5 of Digital Equipment Corporation (DEG), and the most popular modern systems are CLIPS, developed by the National Aeronautics and Space Administration (NASA) in 1985, and its Java clone, Jess, developed at Sandia National Laboratories in 1995. All rule-based expert systems have a similar architecture, and the shells make it fairly easy to create an expert system as soon as a knowledge engineer gathers the knowledge from a domain expert. The most important component of a rule-based expert system is its knowledge base of rules. Each rule consists of an if-then statement... 

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