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Well-formedness
__NOTOC__ Well-formedness is the quality of a clause, word, or other linguistic element that conforms to the grammar of the language of which it is a part. Well-formed words or phrases are grammatical, meaning they obey all relevant rules of grammar. In contrast, a form that violates some grammar rule is ill-formed and does not constitute part of the language. A word may be phonologically well-formed, meaning it conforms to the sound pattern of the language. A word, phrase, clause, or utterance may be grammatically well-formed, meaning it obeys the rules of morphology and syntax. A semantically well-formed utterance or sentence is one that is meaningful. Grammatical well-formedness and semantic well-formedness do not always coincide. For example, the following sentence is grammatically well-formed, but has no clear meaning. :''Colorless green ideas sleep furiously.'' The concept of well-formedness was developed in generative grammar during the twentieth century. Sometimes native s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grammaticality
In linguistics, grammaticality is determined by the conformity to language usage as derived by the grammar of a particular speech variety. The notion of grammaticality rose alongside the theory of generative grammar, the goal of which is to formulate rules that define well-formed, grammatical, sentences. These rules of grammaticality also provide explanations of ill-formed, ungrammatical sentences. In theoretical linguistics, a speaker's judgement on the well-formedness of a linguistic 'string'—called a grammaticality judgement—is based on whether the sentence is interpreted in accordance with the rules and constraints of the relevant grammar. If the rules and constraints of the particular lect are followed, then the sentence is judged to be grammatical. In contrast, an ungrammatical sentence is one that violates the rules of the given language variety. Linguists use grammaticality judgements to investigate the syntactic structure of sentences. Generative linguists are la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grammaticality
In linguistics, grammaticality is determined by the conformity to language usage as derived by the grammar of a particular speech variety. The notion of grammaticality rose alongside the theory of generative grammar, the goal of which is to formulate rules that define well-formed, grammatical, sentences. These rules of grammaticality also provide explanations of ill-formed, ungrammatical sentences. In theoretical linguistics, a speaker's judgement on the well-formedness of a linguistic 'string'—called a grammaticality judgement—is based on whether the sentence is interpreted in accordance with the rules and constraints of the relevant grammar. If the rules and constraints of the particular lect are followed, then the sentence is judged to be grammatical. In contrast, an ungrammatical sentence is one that violates the rules of the given language variety. Linguists use grammaticality judgements to investigate the syntactic structure of sentences. Generative linguists are la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colorless Green Ideas Sleep Furiously
''Colorless green ideas sleep furiously'' is a sentence composed by Noam Chomsky in his 1957 book ''Syntactic Structures'' as an example of a sentence that is grammatically well-formed, but semantically nonsensical. The sentence was originally used in his 1955 thesis ''The Logical Structure of Linguistic Theory'' and in his 1956 paper "Three Models for the Description of Language". There is no obvious understandable meaning that can be derived from it, which demonstrates the distinction between syntax and semantics, and the idea that a syntactically well-formed sentence is not guaranteed to be semantically well-formed as well. As an example of a category mistake, it was used to show the inadequacy of certain probabilistic models of grammar, and the need for more structured models. Senseless but grammatical Chomsky writes in his 1957 book ''Syntactic Structures'': It is fair to assume that neither sentence (1) nor (2) (nor indeed any part of these sentences) has ever occurred i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accidental Gap
In linguistics an accidental gap, also known as a gap, paradigm gap, accidental lexical gap, lexical gap, lacuna, or hole in the pattern, is a potential word, word sense, morpheme, or other form that does not exist in some language despite being theoretically permissible by the grammatical rules of that language. For example, a word pronounced is theoretically possible in English, as it would obey English word-formation rules, but does not currently exist. Its absence is therefore an accidental gap, in the ontologic sense of the word ''accidental'' (that is, circumstantial rather than essential). Accidental gaps differ from systematic gaps, those words or other forms which do not exist in a language due to the boundaries set by phonological, morphological, and other rules of that specific language. In English, a word pronounced does not and ''cannot'' exist because it has no vowels and therefore does not obey the word-formation rules of English. This is a systematic, rather t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clause
In language, a clause is a constituent that comprises a semantic predicand (expressed or not) and a semantic predicate. A typical clause consists of a subject and a syntactic predicate, the latter typically a verb phrase composed of a verb with any objects and other modifiers. However, the subject is sometimes unvoiced if it is retrievable from context, especially in null-subject language but also in other languages, including English instances of the imperative mood. A complete simple sentence includes a single clause with a finite verb. Complex sentences contain multiple clauses including at least one ''independent clause'' (meaning, a clause that can stand alone as a simple sentence) coordinated either with at least one dependent clause (also called an embedded clause) or with one or more independent clauses. Two major distinctions A primary division for the discussion of clauses is the distinction between independent clauses and dependent clauses. An independent clause can s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Generative Syntax
Generative grammar, or generativism , is a linguistic theory that regards linguistics as the study of a hypothesised innate grammatical structure. It is a biological or biologistic modification of earlier structuralist theories of linguistics, deriving ultimately from glossematics. Generative grammar considers grammar as a system of rules that generates exactly those combinations of words that form grammatical sentences in a given language. It is a system of explicit rules that may apply repeatedly to generate an indefinite number of sentences which can be as long as one wants them to be. The difference from structural and functional models is that the object is base-generated within the verb phrase in generative grammar. This purportedly cognitive structure is thought of as being a part of a universal grammar, a syntactic structure which is caused by a genetic mutation in humans. Generativists have created numerous theories to make the NP VP (NP) analysis work in natural la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grammar
In linguistics, the grammar of a natural language is its set of structure, structural constraints on speakers' or writers' composition of clause (linguistics), clauses, phrases, and words. The term can also refer to the study of such constraints, a field that includes domains such as phonology, morphology (linguistics), morphology, and syntax, often complemented by phonetics, semantics, and pragmatics. There are currently two different approaches to the study of grammar: traditional grammar and Grammar#Theoretical frameworks, theoretical grammar. Fluency, Fluent speakers of a variety (linguistics), language variety or ''lect'' have effectively internalized these constraints, the vast majority of which – at least in the case of one's First language, native language(s) – are language acquisition, acquired not by conscious study or language teaching, instruction but by hearing other speakers. Much of this internalization occurs during early childhood; learning a language later ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Well-formed Formula
In mathematical logic, propositional logic and predicate logic, a well-formed formula, abbreviated WFF or wff, often simply formula, is a finite sequence of symbols from a given alphabet that is part of a formal language. A formal language can be identified with the set of formulas in the language. A formula is a syntactic object that can be given a semantic meaning by means of an interpretation. Two key uses of formulas are in propositional logic and predicate logic. Introduction A key use of formulas is in propositional logic and predicate logic such as first-order logic. In those contexts, a formula is a string of symbols φ for which it makes sense to ask "is φ true?", once any free variables in φ have been instantiated. In formal logic, proofs can be represented by sequences of formulas with certain properties, and the final formula in the sequence is what is proven. Although the term "formula" may be used for written marks (for instance, on a piece of paper or ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Well-formed Element
In web page design, and generally for all markup languages such as SGML, HTML, and XML, a well-formed element is one that is either a) opened and subsequently closed, or b) an empty element, which in that case must be terminated; and in either case which is properly Nesting (computing), nested so that it does not Overlapping markup, overlap with other elements. For example, in HTML: word is a well-formed element, while is not, since the bold element is not closed. In XHTML, and XML, empty elements (elements that inherently have no content) are terminated by putting a slash at the end of the "opening" (only) tag, e.g. etc. In HTML 4.01 and earlier, no slash is added to terminate the element. HTML5 does not require one, but it is often added for compatibility with XHTML and XML processing. In a well-formed document, * all elements are well-formed, and * a single element, known as the root element, contains all of the other elements in the document. For example, the code b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Well-formed Document
A well-formed document in XML is a document that "adheres to the syntax rules specified by the XML 1.0 specification in that it must satisfy both physical and logical structures". Requirements At its base level well-formed documents require that: * Content be defined. * Content be delimited with a beginning and end tag * Content be properly nested (parents within roots, children within parents) To be a well-formed document, rules must be established about the declaration and treatment of entities. Tags are case sensitive, with attributes delimited with quotation marks. Empty elements have rules established. Overlapping tags invalidate a document. Ideally, a well-formed document conforms to the design goals of XML. Other key syntax rules provided in the specification include: * It contains only properly encoded legal Unicode characters. * None of the special syntax characters such as < and & appear except when performing their markup-delineation roles. * The begin, end, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Validator
A validator is a computer program used to check the validity or syntactical correctness of a fragment of code or document. The term is commonly used in the context of validating HTML,Tittel, Ed, and Mary C. Burmeister. HTML 4 for Dummies. --For dummies. Hoboken, NJ: Wiley Pub, 2005. CSS, and XML documents like RSS feeds, though it can be used for any defined format or language. ''Accessibility validators'' are automated tools that are designed to verify compliance of a web page or a web site with respect to one or more accessibility guidelines (such as WCAG, Section 508 or those associated with national laws such as the Stanca Act). See also * CSS HTML Validator for Windows * HTML Tidy * W3C Markup Validation Service * Well-formed element * XML validation References {{reflist External links * W3C'HTML Validator * W3C'CSS Validator Mauve an accessibility validator developed bHIIS Lab– ISTI of CNR of Pisa Pisa ( , or ) is a city and ''comune'' in Tuscany, central I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constituent (linguistics)
In syntactic analysis, a constituent is a word or a group of words that function as a single unit within a hierarchical structure. The constituent structure of sentences is identified using ''tests for constituents''. These tests apply to a portion of a sentence, and the results provide evidence about the constituent structure of the sentence. Many constituents are phrases. A phrase is a sequence of one or more words (in some theories two or more) built around a head lexical item and working as a unit within a sentence. A word sequence is shown to be a phrase/constituent if it exhibits one or more of the behaviors discussed below. The analysis of constituent structure is associated mainly with phrase structure grammars, although dependency grammars also allow sentence structure to be broken down into constituent parts. Tests for constituents in English Tests for constituents are diagnostics used to identify sentence structure. There are numerous tests for constituents that are co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
