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The version of the situation calculus introduced by McCarthy in 1986 differs to the original one by the use of functional fluents (e.g., (,) is a term representing the position of x in the situation s) and for an attempt to use circumscription to replace the frame axioms.
The frame problem occurs even in very simple domains. A scenario with a door, which can be open or closed, and a light, which can be on or off, is statically represented by two propositions and .
This representation of fluents is used in the event calculus, in the fluent calculus, and in the features and fluents logics. Some fluents can be represented as functions in a different way. For example, the position of a box can be represented by a function o n ( b o x , t ) {\displaystyle on(box,t)} whose value is the object the box is ...
The event calculus is a logical theory for representing and reasoning about events and about the way in which they change the state of some real or artificial world. It deals both with action events, which are performed by agents, and with external events, which are outside the control of any agent.
A.C.S.M. Ex-P, owner of Jim White Fitness and Nutrition Studios Some of us have a negative association with the word diet, but “there are diets that are safe and effective for weight loss ...
Freddie Mac reports an average 6.91% for a 30-year fixed-rate mortgage, up 6 basis points from last week's average 6.85%, according to its weekly Prime Mortgage Market Survey of nationwide lenders ...
The frame problem shows in this example as the problem that is not a consequence of the above formulae, while the door is supposed to stay closed until the action of opening it is performed. Circumscription can be used to this aim by defining new variables c h a n g e _ o p e n t {\displaystyle change\_open_{t}} to model changes and then ...
The US last dealt with a debt ceiling crisis in early 2023, when it hit its $31.4 trillion debt limit. After months of contentious negotiations between the GOP-led House and the Democrats who ...