A program or algorithm trained and programmed by a human on specific data to achieve an explicitly defined task.

Types
– Rule-Based Systems: The act of machines performing tasks based on predetermined rules that have been hard-coded into them by humans, resulting in predefined outcomes using “if-then” coding statements
– Expert Systems: The act of machines performing tasks based on predetermined expertise that has been hard-coded
into them by humans to simulate the judgment and behavior of a human expert
– Machine Learning: The act of machines learning to perform tasks and optimize performance from experience — without a human explicitly defining the rules