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About: Director string     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:WikicatRewritingSystems, within Data Space : dbpedia.org:8891 associated with source document(s)

Type: yago:Artifact100021939yago:Instrumentality103575240yago:Object100002684yago:PhysicalEntity100001930organisationyago:System104377057yago:Whole100003553yago:WikicatRewritingSystems New Facet based on Instances of this Class

In mathematics, in the area of lambda calculus and computation, directors or director strings are a mechanism for keeping track of the free variables in a term. Loosely speaking, they can be understood as a kind of memoization for free variables; that is, as an optimization technique for rapidly locating the free variables in a term algebra or in a lambda expression. Director strings were introduced by Kennaway and Sleep in 1982 and further developed by Sinot, Fernández and Mackie as a mechanism for understanding and controlling the computational complexity cost of beta reduction.