Learning In Autonomous Robots: A Summary Of The 1996 Robolearn Workshop
Knowledge Engineering Review
The definitions above, separated by ten years, represent two very different conceptions of learning. For Simon learning depends on an internal change in representation, and for Kaelbling it is instead measured in terms of an external change in behaviour. Furthermore, Kaelbling's focus on the situatedness of the learning system being embedded in its environment reflects the recent experience gained by much direct experimentation with physical robots.
H. Hexmoor and Lisa A. Meeden.
"Learning In Autonomous Robots: A Summary Of The 1996 Robolearn Workshop".
Knowledge Engineering Review.