What is AI?
-Eight definitions of AI laid out along 2 dimensions.
-The dimensions on top are concerned with thought process & reasoning.
Acting Humanly : The Turing Test Approach
Turing Test : A computer passes the test if a human interrogator, after posing some written questions , cannot tell whether the written responses comes from a person or from a computer.
-Computer will need to possess following capabilities :
Natural language Processing to enable it to communicate successfully in English
Knowledge representationto store what it knows.
Automated reasoning to use the stored information to answer questions & to draw new conclusions
Machine learning to adapt to new circumstances & to delete & extrapolate Patterns
Total Turing Test : includes a video signal so that the interrogator can test the subject’s perceptual abilities as well the opportunity for the interrogator to pass physical objects “through the hatch”
To pass the total turing test computer will need :
- Computer version to perceive objects &
- Robotics to manipulate objects & move about
Thinking Humanly : The cognitive modeling approach
Cognitive Science : The interdisciplinary field of cognitive science brings together computer models from AI & experimental techniques from psychology to construct precise & testable theories of the human mind.
What is AI Agent? An agent is just something that acts . Computer agents are expected to operate autonomously , perceive their environment, persist over a prolonged time period , adapt to change, & create & pursue goals.
Rational Agent : A rational agent is one that acts so as to achieve the best outcome or when there is uncertainly , the best expected outcome.