In logic, mathematics, computer science, and linguistics, a formal language consists of words whose letters are taken from an alphabet and are well-formed according to a specific set of rules called a formal grammar.
In linguistics, a grammar is the set of rules for how a natural language is structured, as demonstrated by its speakers or writers. Grammar rules may concern the use of clauses, phrases, and words. The term may also refer to the study of such rules, a subject that includes phonology, morphology, and syntax, together with phonetics, semantics, and pragmatics. There are, broadly speaking, two different ways to study grammar: traditional grammar and theoretical grammar.
Language is a structured system of communication that consists of grammar and vocabulary. It is the primary means by which humans convey meaning, both in spoken and signed forms, and may also be conveyed through writing. Human language is characterized by its cultural and historical diversity, with significant variations observed between cultures and across time. Human languages possess the properties of productivity and displacement, which enable the creation of an infinite number of sentences, and the ability to refer to objects, events, and ideas that are not immediately present in the discourse. The use of human language relies on social convention and is acquired through learning.
Natural language processing (NLP) is an interdisciplinary subfield of computer science and artificial intelligence. It is primarily concerned with providing computers the ability to process data encoded in natural language and is thus closely related to information retrieval, knowledge representation and computational linguistics, a subfield of linguistics. Typically data is collected in text corpora, using either rule-based, statistical or neural-based approaches of machine learning and deep learning.
In linguistics, transformational grammar (TG) or transformational-generative grammar (TGG) is part of the theory of generative grammar, especially of natural languages. It considers grammar to be a system of rules that generate exactly those combinations of words that form grammatical sentences in a given language and involves the use of defined operations to produce new sentences from existing ones.
The Language Instinct: How the Mind Creates Language is a 1994 book by Steven Pinker, written for a general audience. Pinker argues that humans are born with an innate capacity for language. He deals sympathetically with Noam Chomsky's claim that all human language shows evidence of a universal grammar, but dissents from Chomsky's skepticism that evolutionary theory can explain the human language instinct.
Parsing, syntax analysis, or syntactic analysis is the process of analyzing a string of symbols, either in natural language, computer languages or data structures, conforming to the rules of a formal grammar. The term parsing comes from Latin pars (orationis), meaning part.
A formal system is an abstract structure and formalization of an axiomatic system used for inferring theorems from axioms by a set of inference rules.
The pronoun who, in English, is an interrogative pronoun and a relative pronoun, used primarily to refer to persons.
Controlled natural languages (CNLs) are subsets of natural languages that are obtained by restricting the grammar and vocabulary in order to reduce or eliminate ambiguity and complexity. Traditionally, controlled languages fall into two major types: those that improve readability for human readers , and those that enable reliable automatic semantic analysis of the language.
Analytic or analytical may refer to:
A grammar checker, in computing terms, is a program, or part of a program, that attempts to verify written text for grammatical correctness. Grammar checkers are most often implemented as a feature of a larger program, such as a word processor, but are also available as a stand-alone application that can be activated from within programs that work with editable text.
Personal pronouns are pronouns that are associated primarily with a particular grammatical person – first person, second person, or third person. Personal pronouns may also take different forms depending on number, grammatical or natural gender, case, and formality. The term "personal" is used here purely to signify the grammatical sense; personal pronouns are not limited to people and can also refer to animals and objects.
The grammar–translation method is a method of teaching foreign languages derived from the classical method of teaching Ancient Greek and Latin. In grammar–translation classes, students learn grammatical rules and then apply those rules by translating sentences between the target language and the native language. Advanced students may be required to translate whole texts word-for-word. The method has two main goals: to enable students to read and translate literature written in the source language, and to further students' general intellectual development. It originated from the practice of teaching Latin; in the early 16th century, students learned Latin for communication, but after the language died out it was studied purely as an academic discipline. When teachers started teaching other foreign languages in the 19th century, they used the same translation-based approach as had been used for teaching Latin. The method has been criticized for its shortcomings.
The direct method of teaching, which is sometimes called the natural method, and is often used in teaching foreign languages, refrains from using the learners' native language and uses only the target language. It was established in England around 1900 and contrasts with the grammar–translation method and other traditional approaches, as well as with C.J. Dodson's bilingual method. It was adopted by key international language schools such as Berlitz, Alliance Française and Inlingua in the 1970s and many of the language departments of the Foreign Service Institute of the U.S. State Department in 2012.
The input hypothesis, also known as the monitor model, is a group of five hypotheses of second-language acquisition developed by the linguist Stephen Krashen in the 1970s and 1980s. Krashen originally formulated the input hypothesis as just one of the five hypotheses, but over time the term has come to refer to the five hypotheses as a group. The hypotheses are the input hypothesis, the acquisition–learning hypothesis, the monitor hypothesis, the natural order hypothesis and the affective filter hypothesis. The input hypothesis was first published in 1977.
Lojban is a logical, constructed, human language created by the Logical Language Group which aims to be syntactically unambiguous. It succeeds the Loglan project.
Language is the capacity for acquiring and using complex systems of communication, and a language is any specific example of such a system.
Junction grammar is a descriptive model of language developed during the 1960s by Eldon G. Lytle (1936–2010).
The following outline is provided as an overview of and topical guide to natural-language processing:
