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Program Expert System In Exsys Corvid Core For Mac

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How to Program an Expert System in Exsys Corvid Core for Mac

Exsys Corvid Core is a simplified version of the widely used, high end Exsys Corvid expert system development tool for MS Windows, but designed specifically for Mac OSX. Expert systems are programs that solve decision making tasks by interacting with an end user in a way that emulates the conversation they would have with a human expert to get the advice and assistance they need[^1^].

In this article, we will show you how to program an expert system in Exsys Corvid Core for Mac using a simple example of a food packaging material selection problem. The expert system will ask the user some questions about their requirements and preferences, and then recommend the best biobased polymer material for their application.

Step 1: Define the Problem and the Knowledge Base

The first step in programming an expert system is to define the problem and the knowledge base. The problem is what you want the expert system to solve, and the knowledge base is the set of facts and rules that represent the human expert's logic and process.

For our example, the problem is to select a suitable biobased polymer material for packaging fruits, dry food and dairy products. The knowledge base consists of information about different biobased polymers and their properties, such as biodegradability, renewability, mechanical strength, thermal stability, gas barrier, etc. We can use a table to organize this information, as shown below:

MaterialBiodegradabilityRenewabilityMechanical StrengthThermal StabilityGas Barrier

Polylactic acid (PLA)HighHighMediumLowMedium

Polyhydroxyalkanoate (PHA)HighHighLowLowLow

Polyethylene furanoate (PEF)MediumHighHighHighHigh

Polybutylene succinate (PBS)MediumMediumMediumMediumLow

Polyethylene terephthalate (PET)LowLowHighHighHigh

Polypropylene (PP)LowLow a474f39169


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