circumscriptionˌsɜr kəmˈskrɪp ʃən
circumscription (n)
English Definitions:
circumscription (noun)
the act of circumscribing
circumscription (Noun)
the act of circumscribing or the quality of being circumscribed
circumscription (Noun)
anything that circumscribes or a circumscribed area
circumscription (Noun)
the definition of what does and does not belong to a given taxon, from a particular taxonomic viewpoint or taxonomic system.
circumscription (Noun)
An electoral district; used often in texts treating electoral systems in Romance countries.
Circumscription
Circumscription is a non-monotonic logic created by John McCarthy to formalize the common sense assumption that things are as expected unless otherwise specified. Circumscription was later used by McCarthy in an attempt to solve the frame problem. In its original first-order logic formulation, circumscription minimizes the extension of some predicates, where the extension of a predicate is the set of tuples of values the predicate is true on. This minimization is similar to the closed world assumption that what is not known to be true is false. The original problem considered by McCarthy was that of missionaries and cannibals: there are three missionaries and three cannibals on one bank of a river; they have to cross the river using a boat that can only take two, with the additional constraint that cannibals must never outnumber the missionaries on either bank. The problem considered by McCarthy was not that of finding a sequence of steps to reach the goal, but rather that of excluding conditions that are not explicitly stated. For example, the solution “go half a mile south and cross the river on the bridge” is intuitively not valid because the statement of the problem does not mention such a bridge. On the other hand, the existence of this bridge is not excluded by the statement of the problem either. That the bridge does not exist is a consequence of the implicit assumption that the statement of the problem contains everything that is relevant to its solution. Explicitly stating that a bridge does not exist is not a solution to this problem, as there are many other exceptional conditions that should be excluded
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"circumscription." Kamus.net. STANDS4 LLC, 2024. Web. 24 Apr. 2024. <https://www.kamus.net/english/circumscription>.
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