4 interactive labs · O Level Computer Science 2210
· Run a greenhouse controller: a sensor feeds an ADC and a microprocessor, which switches a heater and a window motor to hold the preset temperature.
Run a greenhouse controller: a sensor feeds an ADC and a microprocessor, which switches a heater and a window motor to hold the preset temperature.
You will be able to
· Program a robot vacuum, switch its infrared sensor off, move the furniture and watch how its sensors, microprocessor and program decide what it does.
Program a robot vacuum, switch its infrared sensor off, move the furniture and watch how its sensors, microprocessor and program decide what it does.
You will be able to
· Answer an expert system's questions about a computer that will not start, and watch its inference engine apply the rule base to your facts and explain itself.
Answer an expert system's questions about a computer that will not start, and watch its inference engine apply the rule base to your facts and explain itself.
You will be able to
· Train a spam filter on labelled emails, watch its boundary move after each mistake, and test it on unseen emails against a fixed, hand-written rule.
Train a spam filter on labelled emails, watch its boundary move after each mistake, and test it on unseen emails against a fixed, hand-written rule.
You will be able to
Examiner's note. Name the four parts and say what each does: the user interface asks the questions and shows the result; the knowledge base holds the facts; the rule base holds the IF … THEN rules, written with the help of human experts; the inference engine applies the rules to the facts to reach a conclusion and decides which question to ask next. A good answer adds that the system can explain its reasoning. The classic mistakes: saying the knowledge base makes the decisions (the inference engine does), and describing an expert system as one that learns by itself; that is machine learning.
