Grammar
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tree-adjoining grammar (TAG)
المؤلف:
David Crystal
المصدر:
A dictionary of linguistics and phonetics
الجزء والصفحة:
495-20
2023-11-30
1034
tree-adjoining grammar (TAG)
A type of FORMAL GRAMMAR which recognizes TREES as PRIMITIVE elements (elementary trees), combining these into larger structures; also called tree-adjunction grammar. Elementary trees are of two kinds: initial trees, which contain the basic PHRASAL elements of simple SENTENCES, without any RECURSION; and auxiliary trees, which represent recursive structures. The tag FORMALISM makes use of the operations of SUBSTITUTION (in which a ROOT NODE from one tree is merged with a non-terminal node in another, to produce a new tree) and ADJUNCTION (in which an auxiliary tree is attached to a non-terminal node in an initial tree). TAGs were devised by US computer scientist Aravind K. Joshi (b. 1929) and colleagues. They are weakly equivalent to CONTEXT-free grammars.
قسم الشؤون الفكرية يصدر مجموعة قصصية بعنوان (قلوب بلا مأوى)
قسم الشؤون الفكرية يصدر مجموعة قصصية بعنوان (قلوب بلا مأوى)
قسم الشؤون الفكرية يصدر كتاب (سر الرضا) ضمن سلسلة (نمط الحياة)
