Question

What are the types of an expert system? Explain one with a real-time example. “Better the user interface, better is the expert system”. Is this valid? Discuss

Answer 1

Expert system is a knowledge based system, where the system is acting like a human expert. It is an AI software which has wide variety of applications in gaming ,medical diagnosis and so on. It is capable of advising , predicting results, diagnosis ,deriving results ,helping in decision making etc.All knew about the famous Apple's siri. It is the real time application of an expert system.Components of expert systems are :

• Knowledge Base: It contains domain knowledge aswell as rules for forming solutions and procedures.
• Inference Engine: Find most relevant data from the pool and interpret it for finding the best solution for the users question.
• Knowledge acquisition and learning module: Allows the system to acquire data from various sources and keep it in the knowledge base.
• User Interface: Used for a non-expert user to interact with the expert system and find solutions.
• Explanation module : Provides the required answer with explanation.

Types of expert systems are

• Expert System Development Environment :It contains a set of hardware tools such as workstations, minicomputers, mainframes etc ,High level symbolic programming languages as well as large data bases.

• Tools: It helps in reducing the effort and cost for developing an expert system to a great extent.

• Shell : No knowledg base is required. It provides developers with knowledge acquisition, inference engine, user interface, and explanation facility. For example – Java Expert System .

User interface is important , because it determines how the expert system is interacting with user. If it is simple and easy to use ,the non expert users can interact well. Siri is the best example for user friendly system.