Tell-and-Ask Systems
A Tell-and-Ask system is a simple system—you tell it some facts, and then it can answer questions you ask based on what you told it. Consider the following simple example:
Tell: James Dean played in the movie Giant.
Then you could ask questions like:
Ask: Who played in Giant?
Answer: James Dean
Ask: James Dean played in what?
Answer: Giant
You might tell it some more things, too, like:
Tell: James Dean played in East of Eden.
James Dean played in Rebel Without a Cause.
Then if you ask:
Ask: James Dean played in what?
Answer: Giant, East of Eden, Rebel Without a Cause.
One could imagine a sophisticated Tell-and-Ask system that understands natural language and can cope with questions like
Ask: What movies did James ...
Get Semantic Web for the Working Ontologist, 2nd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
