4 August 2009
Progressing Databases 
 

Prof. Gerhard Lakemeyer
Aachen University of Technology
 


In planning and action languages the notion of progressing an initial database when actions are performed plays an important role. A classical example is STRIPS with its add and delete lists. While progression can be done efficiently when the database consists only of literals (as in STRIPS) the general picture is more complicated. In fact, Lin and Reiter showed that progression needs second-order logic in general. In this talk, I will review the idea of progression in the context of the situation calculus and discuss recent results on first-order progression, including cases where the progressed database can be computed efficiently.. 

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