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<italic>In previous heap storage systems, the cost of creating objects and garbage collection is independent of the lifetime of the object. Since objects with short lifetimes account for a large portion of storage use, it is worth optimizing a garbage collector to reclaim storage for these objects more quickly. The garbage collector should spend(More)
This paper surveys the state of the art in the development of problem solving mechanisms for PLANNER-like formalisms. A major design goal for such formalisms is that "for any given piece of knowledge there arc natural placet in the formatitm to procedurally embed the knowledge MO that it will He u$ed when it is appropriate and not used when it it(More)