英和和英

出典:『Wikipedia』 (2011/01/10 19:43 UTC 版)

英語による解説

引用

In programming language semantics, normalisation by evaluation (NBE) is a style of obtaining the normal form of terms in the λ calculus by appealing to their denotational semantics. A term is first interpreted into a denotational model of the λ-term structure, and then a canonical (β-normal and η-long) representative is extracted by reifying the denotation. Such an essentially semantic approach differs from the more traditional syntactic description of normalisation as a reductions in a term rewrite system where β-reductions are allowed deep inside λ-terms.