Will Fitzgerald, R. James Firby
Item descriptions add value to plans. Item descriptions are descriptions about individual objects (or sets of objects) in the world that can be used within plans for reasoning about actions on the objects. Typical reasoning tasks include dereferencing the description to real objects, disambiguating multiple real objects based on the description, and tracking the status of desired goals. We describe the evolution of our thought on a-language for item descriptions, and describe some open questions that remain.