Expert System - IGCSE ICT 0417 | Prof Pras
1In IGCSE ICT, an expert system is a computer-based system that mimics human expert decision-making to solve complex problems in a specific domain. It is commonly used when human expertise is limited or expensive.
Components of an Expert System
Knowledge Base – Stores facts and rules collected from human experts.
Inference Engine – Applies logic and rules to draw conclusions.
User Interface – Allows users to input data and receive advice.
Examples of Expert Systems in ICT
Medical Diagnosis Systems – Suggest diseases based on symptoms.
Car Fault Diagnosis – Identifies vehicle issues from user input.
Loan Approval Systems – Assesses loan eligibility in banks.
Advantages:
✅ Can work 24/7 without fatigue.
✅ Reduces human error.
✅ Provides quick and consistent decisions.
Disadvantages:
❌ Lacks human intuition and creativity.
❌ Expensive to develop and maintain.
❌ Cannot adapt to new situations easily.
Expert systems are important in automation, decision-making, and problem-solving across various fields.