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Notation for context-free formal grammars
grammar, G, is said to be in Chomsky normal form (first described by Noam Chomsky) if all of its production rules are of the form: A → BC, or A → a, or
Chomsky_normal_form
Topics referred to by the same term
form Normal form in music Jordan normal form in formal language theory: Chomsky normal form Greibach normal form Kuroda normal form Normal form (abstract
Normal_form
Formalism to describe programming languages
should be read as Backus–Naur form, as it is "not a normal form in the conventional sense," unlike Chomsky normal form. In 1967, Peter Zilahy Ingerman
Backus–Naur_form
Rule system for formal languages
Chomsky normal form) Earley parser GLR parser LL parser (only for the proper subclass of LL(k) grammars) Context-free parsing for Chomsky normal form
Context-free_grammar
Hierarchy of classes of formal grammars
describes how to form strings from a formal language's alphabet that are valid according to the language's syntax. The linguist Noam Chomsky theorized that
Chomsky_hierarchy
there exists a weakly equivalent one-sided normal form. Backus–Naur form Chomsky normal form Greibach normal form Masami Ito; Yūji Kobayashi; Kunitaka Shoji
Kuroda_normal_form
Topics referred to by the same term
International Airport, Brazil, IATA code CNF Chomsky normal form, in formal language theory, first described by Noam Chomsky Configuration file, in computing, typically
CNF
Use of computational tools for the study of linguistics
described in Chomsky normal form. Attempts have been made to determine how an infant learns a "non-normal grammar" as theorized by Chomsky normal form. Research
Computational_linguistics
Form for context-free grammars
double Greibach normal form. Backus–Naur form Chomsky normal form Kuroda normal form Greibach, Sheila (January 1965). "A New Normal-Form Theorem for Context-Free
Greibach_normal_form
Parsing algorithm for context-free grammars
standard version of CYK operates only on context-free grammars given in Chomsky normal form (CNF). However any context-free grammar may be algorithmically transformed
CYK_algorithm
Topics referred to by the same term
Anti-Chomsky Reader, 2004 Chomsky hierarchy, for classifying formal grammars Chomsky normal form, a notation for formal grammars Chomsky–Schützenberger theorem
Chomsky_(disambiguation)
Formal language that can be expressed using a regular expression
Noam Chomsky, in his 1959 seminal article, used the term regular in a different meaning at first (referring to what is called Chomsky normal form today)
Regular_language
Theorem concerning occurrences of terminal symbols in context-free languages
context-free languages: Lemma—If L {\displaystyle L} is generated by a Chomsky normal form grammar, then ∃ N ≥ 1 {\displaystyle \exists N\geq 1} , such that
Parikh's_theorem
Automatic analysis of syntactic structure of natural language
merging. Algorithms generally require the CFG to be converted to Chomsky Normal Form (with two children per constituent), which can be done without losing
Syntactic parsing (computational linguistics)
Syntactic_parsing_(computational_linguistics)
American linguist and activist (born 1928)
Avram Noam Chomsky (born December 7, 1928) is an American intellectual, philosopher, linguist, political activist, and social critic. Sometimes called
Noam_Chomsky
Analysing a string of symbols, according to the rules of a formal grammar
algorithm: an O(n3) algorithm for parsing context-free grammars in Chomsky normal form Earley parser: another O(n3) algorithm for parsing any context-free
Parsing
Formal language generated by context-free grammar
G} ; is also known as recognition. Context-free recognition for Chomsky normal form grammars was shown by Leslie G. Valiant to be reducible to Boolean
Context-free_language
Measure of branching complexity
the derivation trees of context-free grammars, especially those in Chomsky normal form. This notion has been studied under the name of index of a derivation
Strahler_number
Type of formal grammar
context-free tree grammars can be found in Lohrey et al. An SLG in Chomsky normal form is equivalent to a straight-line program.[citation needed] The Sequitur
Straight-line_grammar
algorithm: an O(n3) algorithm for parsing context-free grammars in Chomsky normal form Earley parser: another O(n3) algorithm for parsing any context-free
List_of_algorithms
Type of pumping lemma
s=a^{p}b^{p}c^{p}} in L. The pumping lemma tells us that s can be written in the form s = u v w x y {\displaystyle s=uvwxy} , where u, v, w, x, and y are substrings
Pumping lemma for context-free languages
Pumping_lemma_for_context-free_languages
parser – Cat (Unix) – CD-ROM – Central processing unit – Chimera – Chomsky normal form – CIH virus – Classic Mac OS – Cloud Computing – COBOL – Cocoa (software)
Index_of_computing_articles
canonical system is said to be in normal form if it has only one initial word and every production rule is of the simple form g $ → $ h {\displaystyle
Post_canonical_system
Type of formal grammar
considered context-sensitive; the latter issue was analyzed by Chomsky in 1963. Chomsky introduced context-sensitive grammars as a way to describe the
Context-sensitive_grammar
Structured system of communication
Chomsky. Language is thought to have gradually diverged from earlier primate communication systems when early hominins acquired the ability to form a
Language
Type of formal grammar
define the same class of languages (the context-sensitive languages) in the Chomsky hierarchy. This equivalence makes them important for understanding the
Noncontracting_grammar
1966 book by Noam Chomsky
Chapter in the History of Rationalist Thought is a 1966 book by Noam Chomsky. Chomsky coined term Cartesian linguistics in the book – the adjective "Cartesian"
Cartesian_Linguistics
1981 book by Noam Chomsky
Lectures (LGB) is a book by the linguist Noam Chomsky, published in 1981. It is based on the lectures Chomsky gave at the GLOW conference and workshop held
Lectures on Government and Binding
Lectures_on_Government_and_Binding
State of standing out as unusual
involves the characterization of a "normal" linguistic unit against one or more of its possible "irregular" forms. Markedness can apply to phonological
Markedness
1965 book by Noam Chomsky
on linguistics written by American linguist Noam Chomsky, first published in 1965. In Aspects, Chomsky presented a deeper, more extensive reformulation
Aspects of the Theory of Syntax
Aspects_of_the_Theory_of_Syntax
1957 book by Noam Chomsky
p. 153 Chomsky 1962 Chomsky 1963 Chomsky 1969. Chomsky 1973a. Chomsky 1966b. Chomsky 1974. Chomsky 1970. Chomsky 1966a. Bugarski 1972. Chomsky 1973b.
Syntactic_Structures
Hypothesis that younger people are better at language acquisition
learned normal and logical rules and was able to construct an organised linguistic system, despite being exposed to inconsistent input. Chomsky developed
Critical_period_hypothesis
Universally-occurring linguistic pattern
form a potential 'theory of learning' for how humans learn all or most of our cognitive processes throughout our lives. The discussion of Chomsky's UG
Linguistic_universal
Typographical symbol (*)
of asterisk usage to entire sentences is often credited to Noam Chomsky, but Chomsky in 1968 already describes this usage as "conventional". Linguist
Asterisk
Taiwanese linguist (born 1948)
relations in Chinese and the theory of grammar," under linguists Noam Chomsky and Kenneth L. Hale. Huang was the recipient of a Guggenheim Fellowship
C.-T._James_Huang
American linguist and author (born 1951)
could continue to study Pirahã. Everett focused on the theories of Noam Chomsky. His master's thesis, "Aspectos da Fonologia do Pirahã," was written under
Daniel_Everett
Academic subfield of computer science
allowing more complex language specification than the one before it, i.e. Chomsky hierarchy, and each corresponding to a class of automata which recognizes
Theory_of_computation
Short story by Jorge Luis Borges
(PDF). Translated by Weinberger, Eliot. London: Penguin. pp. 214–216. Chomsky, Noam (1969) [1965]. Aspects of the theory of syntax (1st pbk. ed.). Cambridge:
The_Library_of_Babel
American linguist
Massachusetts Institute of Technology, where she was a student of Noam Chomsky. She has held academic positions at University of California, Irvine and
Hagit_Borer
Relationship between language and human evolution
envisage language as evolving from early human capacities for song. Noam Chomsky, a proponent of discontinuity theory, argues that a single change occurred
Origin_of_language
1969 non-fiction book by G. Spencer-Brown
depth does not exceed two. The result is a normal form, the primary algebra analog of the conjunctive normal form. LoF (T14–15) proves the primary algebra
Laws_of_Form
French philosopher (1926–1984)
Noam Chomsky, Foucault argued against the possibility of any fixed human nature, as posited by Chomsky's concept of innate human faculties. Chomsky argued
Michel_Foucault
Use of a pronoun tied to an antecedent
clause Prince 1991. Sharvit 1999. Beltrama 2013. Chomsky & Wise 1982. Zaenen, Engdahl & Maling 1981. Chomsky 1995. McKee & McDaniel 2001. Beltrama, A (2013)
Resumptive_pronoun
View in psychology about the brain
UG is Noam Chomsky, although the idea of Universal Grammar has clear historical antecedents at least as far back as the 1300s, in the form of the Speculative
Psychological_nativism
faithful cone; the inverse homomorphisms are not restricted. Within the Chomsky hierarchy, the regular languages, the context-free languages, and the recursively
Cone_(formal_languages)
θ-criterion) is a constraint on x-bar theory that was first proposed by Noam Chomsky (1981) as a rule within the system of principles of the government and
Theta_criterion
American feral child (born 1957)
discussion in both lay and academic circles about the hypotheses of Noam Chomsky, who had first suggested that language was innate to humans and distinguishes
Genie_(feral_child)
1994 book
since 1940." In 1972, Noam Chomsky questioned Herrnstein's idea that society was developing towards a meritocracy. Chomsky criticized the assumptions
The_Bell_Curve
Neurological theory
conditions. Despite this, all normal children are still able to formulate an accurate representation of grammar which led Chomsky to theorise that children
Domain-specific_learning
Diacritic used in the Hebrew alphabet
found in Hebrew. Hebrew alphabet Hebrew phonology Mater lectionis Rafe Chomsky, William (April 1973). "Dagesh and Rafe in the Tiberian Tradition". The
Mappiq
Pronoun having no referent
Noam Chomsky has argued that the it employed as the subject of English weather verbs can control the subject of an adjunct clause, just like a "normal" subject
Dummy_pronoun
Method of teaching foreign languages
underpinnings of the method were questioned by linguists, such as Noam Chomsky, who pointed out the limitations of structural linguistics. The relevance
Audio-lingual_method
Expansion of American political, economic, and military influence
p. 239. ISBN 978-0-09-944839-6. "Selections, by Noam Chomsky (Excerpted from Year 501)". chomsky.info. Retrieved February 7, 2026. Toussaint, Eric (July
American_imperialism
Guiding principle for a moral dilemma
White, W.H. New York: Penguin Classics. p. 424. ASIN B00DO8NRDC. Noam Chomsky and John Halle, "An Eight Point Brief for LEV (Lesser Evil Voting)," New
Lesser_of_two_evils_principle
Randomly determined process
form (Hopper 1987, 1988), USF rejects the Saussurean dichotomies such as langue vs. parôle. For early interpretivist approaches to focus, see Chomsky
Stochastic
Hypothesized brain structure for innate language capabilities
to contain innate capacities for language, originally posited by Noam Chomsky. There is ongoing research into brain modularity in the fields of cognitive
Language_module
Movement demanding sanctions against Israel
original on 29 March 2022. Retrieved 29 March 2022. Chomsky, "On Israel-Palestine and BDS"; Noam Chomsky and Ilan Pappe, On Palestine (Bungay, UK: Penguin
Boycott, Divestment and Sanctions
Boycott,_Divestment_and_Sanctions
Approach in linguistics
without it no matter what teaching approach they may use. In 1965, Noam Chomsky made a distinguishing explanation of competence and performance, on the
Error_analysis_(linguistics)
Esoteric, minimalist programming language
finite-state machine, recognizing exactly the regular languages in the Chomsky hierarchy. The old value is overwritten. Alternatively, the ] command may
Brainfuck
Verb form modifying a noun or noun phrase
their morphological similarity can create contextual ambiguity, as Noam Chomsky pointed out in his well-known example: Flying planes can be dangerous.
Participle
Process in which a first language is being acquired
other forms of language to which a learner is exposed, relative to acquired proficiency in first or second languages". Nativists such as Chomsky have focused
Language_acquisition
Something that has mass and volume
Newton, Optics, Book III, pt. 1, query 31. McGuire and Heimann, 104. N. Chomsky (1988). Language and problems of knowledge: the Managua lectures (2nd ed
Matter
2024 suicide protesting Israel's invasion of Gaza
colonizers—it's not extreme at all. This is what our ruling class has decided will be normal. Outside the embassy, Bushnell placed his camera down, positioned himself
Self-immolation of Aaron Bushnell
Self-immolation_of_Aaron_Bushnell
2005 science fiction novel by Charles Stross
conformational problem Ken Thompson's compiler hack Penrose tiling Noam Chomsky's example sentence, Colorless green ideas sleep furiously A Dyson sphere
Accelerando
Type of formal grammar
Regular tree grammar, a generalization from strings to trees Prefix grammar Chomsky hierarchy Hidden Markov model Hopcroft & Ullman 1979, p. 217 (left, right-regular
Regular_grammar
Eban's statement, Chomsky replied: "That is a convenient stand. It cuts off a mere 100 percent of critical comment!" In 2002, Chomsky wrote that this equation
Criticism_of_Israel
American philosopher (1922–1996)
term used in certain forms of linguistics and the work of Georg Lichtenberg to its current broader meaning, coined the term "normal science" to refer to
Thomas_Kuhn
1999 military operation
war." On 31 May 2006, Brad DeLong rebutted Chomsky and quoted from elsewhere in the passage which Chomsky had cited, "the Kosovo crisis was fueled by
NATO_bombing_of_Yugoslavia
American politician and activist (born 1941)
Burlington City Hall hosted a foreign policy speech by Noam Chomsky. In his introduction, he praised Chomsky as "a very vocal and important voice in the wilderness
Bernie_Sanders
classes. Regular languages are a category of languages (sometimes termed Chomsky Type 3) which can be matched by a state machine (more specifically, by
Comparison of parser generators
Comparison_of_parser_generators
Norms for writing the English language
Rollings 2004. Rollings 2004, pp. 16–19. Chomsky & Halle 1968. Chomsky 1970. Chomsky & Halle 1968, p. 54. Chomsky 1970, p. 294. Rollings 2004, p. 17. Rollings
English_orthography
Distinction between using a word and mentioning it
called cheese. It demonstrates a use or usage; the writer is using the normal English word cheese, in its typical way, to refer to the common dairy product
Use–mention_distinction
Intellectual controversy
Documentality John Searle#Intentionality and the background Science wars Chomsky-Foucault debate Habermas-Foucault debate J. L. Austin – English philosopher
Searle–Derrida_debate
Interdisciplinary scientific study of cognitive processes
experiments using computer memory as a model of human cognition. In 1959, Noam Chomsky published a scathing review of B. F. Skinner's book Verbal Behavior. At
Cognitive_science
1988 aircraft shootdown over the Strait of Hormuz
from the original (PDF) on 29 February 2008. Retrieved 29 February 2008. Chomsky, Noam (24 August 2014). "Outrage". ZNetwork. Archived from the original
Iran_Air_Flight_655
Study, evaluation, and interpretation of literature
the Essence of Poetry E. D. Hirsch Jr.: Objective Interpretation Noam Chomsky: Aspects of the Theory of Syntax Jacques Derrida: Structure, Sign, and
Literary_criticism
Concept in the social and political sciences
act as a deterrent as means of social control. Theorists such as Noam Chomsky have argued that systemic bias exists in the modern media. The marketing
Social_control
Jewish nationalist movement
antisemitic.[page needed] Anti-Zionist writers such as Norman Finkelstein, Noam Chomsky, Michael Marder, and Tariq Ali have argued that conflation of anti-Zionism
Zionism
British linguist (1925–2018)
linguistics". On Chomsky specifically, he writes that "imaginary problems were created by the whole series of dichotomies that Chomsky introduced, or took
Michael_Halliday
Political philosophy
(2003). "Introduction to Chomsky's Social Theory". In Otero, Carlos Peregrin (ed.). Radical Priorities. Chomsky, Noam Chomsky (3rd ed.). Oakland, California:
Right-libertarianism
1962 book by Thomas S. Kuhn
conceptual continuity and cumulative progress, referred to as periods of "normal science", were interrupted by periods of revolutionary science. The discovery
The Structure of Scientific Revolutions
The_Structure_of_Scientific_Revolutions
Indian-American politician and economist
Retrieved December 10, 2021. "Sawant recall campaign in full swing and Noam Chomsky has a bit role". Puget Sound Business Journal. November 18, 2021. Retrieved
Kshama_Sawant
Political party in the US and Canada
– via X (formerly Twitter). Bloomington-Normal CPUSA [@BloNoCpusa] (July 22, 2024). "The Bloomington-Normal Club of the Communist Party USA is not a
American Communist Party (2024)
American_Communist_Party_(2024)
Concept in modern economics
shown that in general the resulting equilibrium is not efficient. Noam Chomsky suggests that Smith (and more specifically David Ricardo) sometimes used
Invisible_hand
1949 dystopian novel by George Orwell
the outside world but continuously watched by television cameras. Noam Chomsky adapted Orwell's neologism "unpeople" to describe those whom the state
Nineteen_Eighty-Four
American fruit company (1899–1970)
491–509. doi:10.1525/ae.1979.6.3.02a00050. ISSN 0094-0496. JSTOR 643778. Chomsky, Aviva (2007). "Globalization, Labor, and Violence in Colombia's Banana
United_Fruit_Company
1968 U.S. war crime during the Vietnam War
references. ISBN 978-0670842964 Chomsky, Noam. "After Pinkville", Bertrand Russell War Crimes Tribunal on Vietnam, 1971 Chomsky, Noam and Edward S. Herman
My_Lai_massacre
Ancient Sanskrit grammarian
applications of modern mathematical logic to linguistics by Noam Chomsky. (Chomsky himself has said that the first generative grammar in the modern sense
Pāṇini
Marvel Comics superhero team of mutants
by Nocenti's readings of media critics such as Marshall McLuhan, Noam Chomsky, and Walter Lippmann. The X-Men's resistance against Mojo's tyranny is
X-Men
Anti-fascist political activist movement
he described as "neofascists". In 2017, veteran radical activist Noam Chomsky described antifa as "a major gift to the right", arguing that "the movement
Antifa_(United_States)
Flag of the United Kingdom
December 2015. Salkie, Raphael (1990). "Outside the 'Free World'". The Chomsky Update: Linguistics and Politics. Unwin Hyman. p. 174. ISBN 978-0-04-445589-9
Union_Jack
Japanese linguist (1934–2009)
dissertation, Generative Studies in the Japanese Language (1965), under Chomsky's supervision. "Classes of languages and linear-bounded automata", Information
S.-Y._Kuroda
Sequence of characters that forms a search pattern
regular languages. NFAs are a simple variation of the type-3 grammars of the Chomsky hierarchy. In the opposite direction, there are many languages easily described
Regular_expression
Anarchist school of thought
he finds fallacious. Edmundson claims that the individual does not owe a normal state a duty of obedience, but he considers that not to imply that anarchism
Philosophical_anarchism
Something that represents an idea, process, or physical entity
that symbols are not just relevant to the theory of dreams but also to "normal symbol systems". He says they are related through "substitution", where
Symbol
Type of a context-free grammar
ε-free can be transformed into an equivalent LL(k) grammar in Greibach normal form (which by definition does not have rules with left recursion). Let Σ
LL_grammar
Study of how humans produce and perceive sounds
unlikely that a given language can minimally contrast all seven levels. Chomsky and Halle suggest that there are only three levels, although four levels
Phonetics
Idea that knowledge comes only/mainly from sensory experience
translating or paraphrasing statement must be couched in terms of normal observers in normal conditions of observation. There is, however, no finite set of
Empiricism
Phonology of the English language
approach to the English vowel system was proposed by Chomsky and Halle. Their Sound Pattern of English (Chomsky & Halle 1968) proposed that English has lax and
English_phonology
Awareness of internal and external existence
the way the retinal axons were wired. Several scholars including Pinker, Chomsky, Edelman, and Luria have indicated the importance of the emergence of human
Consciousness
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