In an expert system, the inference engine uses reasoning that consists of backward or forward chaining. Explain the differences between backward and forward chaining.

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THEORY

2024

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When an expert system is used to suggest solutions to problems the inference engine uses a form of reasoning involving forward chaining or backward chaining. Explain the differences between forward chaining and backward chaining by describing both terms.

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THEORY

2017

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Doctors often use expert systems to help them make a diagnosis. Without describing its components explain how an expert system helps the doctor come to a decision regarding the diagnosis.

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THEORY

2019

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Li has just discovered his printer is not responding when he sends a document to print. Describe how the following components of an expert system are used to diagnose faults with the printer. User interface Inference engine Knowledge base

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THEORY

2020

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Li has just discovered his printer is not responding when he sends a document to print. Describe how the following components of an expert system are used to diagnose faults with the printer. User interface Inference engine Knowledge base

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THEORY

2020

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A computer repair company employs a technician who uses an expert system to diagnose problems with printers. The company also employs a knowledge engineer. Explain how the technician would interact with the expert system. Explain the role of the knowledge engineer.

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THEORY

2021

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In a medical expert system, the inference engine receives symptoms from the user interface. Explain how the inference engine uses these inputs to produce possible diagnoses.

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THEORY

2021

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Many computer hardware companies use expert systems to diagnose computer faults. The inference engine is a key component in an expert system. Describe, in detail, the other components of an expert system.

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THEORY

2021

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A delivery company uses an expert system to help produce route schedules for its vehicles. Without describing its components, explain how an expert system would produce these schedules. Explain what is meant by backward chaining.

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THEORY

2022

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Explain what is meant by the term ‘data driven’ within the context of expert systems.

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THEORY

2023

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