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Context-free grammar. Simplified excerpt of the formal grammar [1] for the C programming language (left), and a derivation of a piece of C code (right) from the nonterminal symbol . Nonterminal symbols are blue and terminal symbols are red. In formal language theory, a context-free grammar ( CFG) is a formal grammar whose production rules can ...
Context (linguistics) In semiotics, linguistics, sociology and anthropology, context refers to those objects or entities which surround a focal event, in these disciplines typically a communicative event, of some kind. Context is "a frame that surrounds the event and provides resources for its appropriate interpretation".
Context-free language. In formal language theory, a context-free language ( CFL ), also called a Chomsky type-2 language, is a language generated by a context-free grammar (CFG). Context-free languages have many applications in programming languages, in particular, most arithmetic expressions are generated by context-free grammars.
In computer science, in particular in formal language theory, the pumping lemma for context-free languages, also known as the Bar-Hillel lemma, [1] is a lemma that gives a property shared by all context-free languages and generalizes the pumping lemma for regular languages . The pumping lemma can be used to construct a proof by contradiction ...
ConTeXt. ConTeXt is a general-purpose document processor. Like LaTeX, it is derived from TeX. It is especially suited for structured documents, automated document production, very fine typography, and multilingual typesetting. It is based in part on the TeX typesetting system, and uses a document markup language for manuscript preparation.
Context-sensitive grammar. A context-sensitive grammar ( CSG) is a formal grammar in which the left-hand sides and right-hand sides of any production rules may be surrounded by a context of terminal and nonterminal symbols. Context-sensitive grammars are more general than context-free grammars, in the sense that there are languages that can be ...
Quoting out of context. Quoting out of context (sometimes referred to as contextomy or quote mining) is an informal fallacy in which a passage is removed from its surrounding matter in such a way as to distort its intended meaning. [1] Context may be omitted intentionally or accidentally, thinking it to be non-essential.
Key Word in Context. Key Word In Context ( KWIC) is the most common format for concordance lines. The term KWIC was coined by Hans Peter Luhn. [1] The system was based on a concept called keyword in titles, which was first proposed for Manchester libraries in 1864 by Andrea Crestadoro. [2]
In formal language theory, deterministic context-free languages ( DCFL) are a proper subset of context-free languages. They are the context-free languages that can be accepted by a deterministic pushdown automaton. DCFLs are always unambiguous, meaning that they admit an unambiguous grammar. There are non-deterministic unambiguous CFLs, so ...
Context collapse or "the flattening of multiple audiences into a single context " [1] is a term arising out of the study of human interaction on the internet, especially within social media. [2] Context collapse "generally occurs when a surfeit of different audiences occupy the same space, and a piece of information intended for one audience ...