Expert systems and expert support systems : the next challenge for
Information knowledge based systems (IKBS) and expert systems
description
Transcript of Information knowledge based systems (IKBS) and expert systems
Information knowledge based systems (IKBS) and expert systems
Information knowledge based systems (IKBS) and expert systems
IKBS/expert systems• A computer that thinks and behaves
like a human expert in a certain field• These are systems that can be used
to mimic a human expert• They use artificial intelligence to
make decisions based on answers to questions
Information knowledge based systems (IKBS) and expert systems
Components• Knowledge base – set of knowledge about a
about particular field/subject• Inference engine – a set of rules on which
the decisions made by the system are based - these rules are applied to the knowledge base
• User interface – the way the expert system/IKBS communicates with the user - it presents the user with questions and allows them to type in the answers
Information knowledge based systems (IKBS) and expert systems
Applications of expert systems/IKBS
• Doctors – for medical diagnosis• Architects – to help with the design
of buildings• Geologists – to help them find the
best place to look for minerals or oil• Accountants – for giving tax advice to
individuals/companies
Information knowledge based systems (IKBS) and expert systems
Medical diagnosis• Enables a doctor to
make an accurate diagnosis
• Gives a doctor the the knowledge and decision-making ability of a consultant in the field
• Enables a patient to be put on the correct treatment without delay
Information knowledge based systems (IKBS) and expert systems
Designing buildings• Gives builders/architects
expert information on the best way to construct buildings
• For example, builders can specify a certain number of rooms and the system will put them together in the best way
Information knowledge based systems (IKBS) and expert systems
Prospecting for minerals/oil
• Can take geological information from maps to create the knowledge base
• Use knowledge base and apply the rules in the inference engine to it
• The user can enter locations using the user interface
• The expert system/IKBS will suggest the most likely places where minerals/oil could be found
Information knowledge based systems (IKBS) and expert systems
Giving tax advice to companies/individuals
• Tax is complex• Companies and
individuals want to legally minimize the tax they pay
• Expert systems ask a series of question to arrive at an expert decision
Information knowledge based systems (IKBS) and expert systemsAdvantages and
disadvantages of expert systems/IKBS
Advantages• Fewer mistakes – they do not
forget things• Less time to train – human
experts take a long time to train
• More expertise than a single expert – systems based on expertise of many experts
• Always asks the questions that a human expert may forget to ask
Disadvantages• Systems lack common
sense – they cannot spot a situation that is ridiculous
• Systems lack senses – for example, a patient may need to be observed
• The system relies on the rules being correct – the person creating the expert system may have made mistakes