View source for Social:Constraint-based grammar

{{Linguistics}}
'''Constraint-based grammars''' can perhaps be best understood in contrast to [[Software:Generative grammar|generative grammar]]s. A generative grammar lists all the transformations, merges, movements, and deletions that can result in all well-formed sentences, while constraint-based grammars, take the opposite approach, allowing anything that is not otherwise constrained. "The grammar is nothing but a set of constraints that structures are required to satisfy in order to be considered well-formed."<ref>{{cite web|last1=Pollard|first1=Carl|title=The nature of constraint-based grammar|url=http://isli.khu.ac.kr/journal/content/data/15/1.pdf|website=11th Pacific Asian conference on language, information and computation}}</ref> "A constraint-based grammar is more like a data base or a knowledge representation system than it is like a collection of algorithms."<ref>{{cite web|last1=Pollard|first1=Carl|title=The nature of constraint-based grammar|url=http://isli.khu.ac.kr/journal/content/data/15/1.pdf|website=11th Pacific Asian conference on language, information and computation}}</ref>

Examples of such grammars include
*the non-procedural variant of Transformational Grammar of Lakoff, that formulates constraints on potential tree sequences<ref name="=Müller"/>
*Johnson and Postal’s formalization of Relational Grammar (1980), GPSG in the variants developed by Gazdar et al. (1988), Blackburn et al. (1993) and Rogers (1997)<ref name="=Müller"/>
*[[Software:Lexical functional grammar|LFG]] in the formalization of Kaplan (1995)<ref name="=Müller"/>
*HPSG in the formalization of King (1999)<ref name="=Müller">{{cite book|last1=Müller|first1=Stefan|title=Grammatical theory: From transformational grammar to constraint-based approaches|date=2016|publisher=Language Science Press|location=Berlin|pages=490–491|url=http://www.oapen.org/download?type=document&docid=611693}}</ref>
*[[Constraint Handling Rules|Constraint handling rule]] grammars<ref>Christiansen, Henning. "[http://dtai.cs.kuleuven.be/projects/CHR/papers/chr2004/christ_grammars_mult_stores_chr04.pdf CHR Grammars with multiple constraint stores]." First Workshop on Constraint Handling Rules: Selected Contributions. Universität Ulm, Fakultät für Informatik, 2004.</ref>

==References==

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[[Category:Linguistics]]
[[Category:Grammar frameworks]]



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