Linguistic prescription, or prescriptive grammar, is the attempt to lay down rules defining preferred or "correct" use of language. These rules may address such linguistic aspects as spelling, vocabulary and semantics. Sometimes informed by linguistic purism, such normative practices may suggest that some usages are incorrect, lack communicative effect, or are of low aesthetic value, they may include judgments on proper and politically correct language use. Linguistic prescriptivism may aim to establish a standard language, teach what a particular society perceives as a correct form, or advise on effective and stylistically felicitous communication. If usage preferences are conservative, prescription might appear resistant to language change. Prescriptive approaches to language are contrasted with the descriptive approach, employed in academic linguistics, which observes and records how language is used; the basis of linguistic research is text analysis and field study, both of which are descriptive activities.
Description, may include researchers' observations of their own language usage. In the Eastern European linguistic tradition, the discipline dealing with standard language cultivation and prescription is known as "language culture" or "speech culture". Despite being apparent opposites and description are considered complementary, as comprehensive descriptive accounts must take existing speaker preferences into account, an understanding of how language is used is necessary for prescription to be effective. Since the mid-20th century some dictionaries and style guides, which are prescriptive works by nature, have integrated descriptive material and approaches. Examples of guides updated to add more descriptive and evidence-based material include Webster's Third New International Dictionary and the third edition Garner's Modern English Usage in English, or the Nouveau Petit Robert in French. A descriptive approach can be useful when approaching topics of ongoing conflict between authorities, or in different dialects, styles, or registers.
Other guides, such as The Chicago Manual of Style, are designed to impose a single style and thus remain prescriptive. Some authors define "prescriptivism" as the concept where a certain language variety is promoted as linguistically superior to others, thus recognizing the standard language ideology as a constitutive element of prescriptivism or identifying prescriptivism with this system of views. Others, use this term in relation to any attempts to recommend or mandate a particular way of language usage, however, implying that these practices must involve propagating the standard language ideology. According to another understanding, the prescriptive attitude is an approach to norm-formulating and codification that involves imposing arbitrary rulings upon a speech community, as opposed to more liberal approaches that draw from descriptive surveys. Mate Kapović makes a distinction between "prescription" and "prescriptivism", defining the former as "process of codification of a certain variety of language for some sort of official use", the latter as "an unscientific tendency to mystify linguistic prescription".
Linguistic prescription is categorized as the final stage in a language standardization process. It is politically motivated, it can be included in the cultivation of a culture. As culture is seen to be a major force in the development of standard language, multilingual countries promote standardization and advocate adherence to prescriptive norms; the chief aim of linguistic prescription is to specify preferred language forms in a way, taught and learned. Prescription may apply to most aspects of language, including spelling, vocabulary and semantics. Prescription is useful for facilitating inter-regional communication, allowing speakers of divergent dialects to understand a standardized idiom used in broadcasting, for example, more than each other's dialects. While such a lingua franca may evolve by itself, the desire to formally codify and promote it is widespread in most parts of the world. Writers or communicators adhere to prescriptive rules to make their communication clearer and more understood.
Stability of a language over time helps one to understand writings from the past. Foreign language instruction is considered a form of prescription, since it involves instructing learners how to speak, based on usage documentation laid down by others. Linguistic prescription may be used to advance a social or political ideology. During the second half of the 20th century, efforts driven by various advocacy groups had considerable influence on language use under the broad banner of "political correctness", to promote special rules for anti-sexist, anti-racist, or generically anti-discriminatory language. George Orwell criticized the use of euphemisms and convoluted phrasing as a means of hiding insincerity in Politics and the English Language, his fictional "Newspeak" is a parody of ideologically motivated linguistic prescriptivism. Prescription presupposes authorities whose judgments may come to be followed by many other speakers and writers. For English, these authorities tend to be books. H. W. Fowler's Mo
Dependency grammar is a class of modern grammatical theories that are all based on the dependency relation and that can be traced back to the work of Lucien Tesnière. Dependency is the notion that linguistic units, e.g. words, are connected to each other by directed links. The verb is taken to be the structural center of clause structure. All other syntactic units are either directly or indirectly connected to the verb in terms of the directed links, which are called dependencies. DGs are distinct from phrase structure grammars, since DGs lack phrasal nodes, although they acknowledge phrases. Structure is determined by the relation between its dependents. Dependency structures are flatter than phrase structures in part because they lack a finite verb phrase constituent, they are thus well suited for the analysis of languages with free word order, such as Czech and Warlpiri; the notion of dependencies between grammatical units has existed since the earliest recorded grammars, e.g. Pāṇini, the dependency concept therefore arguably predates that of phrase structure by many centuries.
Ibn Maḍāʾ, a 12th-century linguist from Córdoba, may have been the first grammarian to use the term dependency in the grammatical sense that we use it today. In early modern times, the dependency concept seems to have coexisted side by side with that of phrase structure, the latter having entered Latin, French and other grammars from the widespread study of term logic of antiquity. Dependency is concretely present in the works of Sámuel Brassai, a Hungarian linguist, Franz Kern, a German philologist, of Heimann Hariton Tiktin, a Romanian linguist. Modern dependency grammars, begin with the work of Lucien Tesnière. Tesnière was a Frenchman, a polyglot, a professor of linguistics at the universities in Strasbourg and Montpellier, his major work Éléments de syntaxe structurale was published posthumously in 1959 – he died in 1954. The basic approach to syntax he developed seems to have been seized upon independently by others in the 1960s and a number of other dependency-based grammars have gained prominence since those early works.
DG has generated a lot of interest in Germany in both theoretical language pedagogy. In recent years, the great development surrounding dependency-based theories has come from computational linguistics and is due, in part, to the influential work that David Hays did in machine translation at the RAND Corporation in the 1950s and 1960s. Dependency-based systems are being used to parse natural language and generate tree banks. Interest in dependency grammar is growing at present, international conferences on dependency linguistics being a recent development. Dependency is a one-to-one correspondence: for every element in the sentence, there is one node in the structure of that sentence that corresponds to that element; the result of this one-to-one correspondence is. All that exist are the dependencies that connect the elements into a structure; this situation should be compared with phrase structure. Phrase structure is a one-to-one-or-more correspondence, which means that, for every element in a sentence, there is one or more nodes in the structure that correspond to that element.
The result of this difference is that dependency structures are minimal compared to their phrase structure counterparts, since they tend to contain many fewer nodes. These trees illustrate two possible ways to render the phrase structure relations; this dependency tree is an "ordered" tree. Many dependency trees abstract away from linear order and focus just on hierarchical order, which means they do not show actual word order; this constituency tree follows the conventions of bare phrase structure, whereby the words themselves are employed as the node labels. The distinction between dependency and phrase structure grammars derives in large part from the initial division of the clause; the phrase structure relation derives from an initial binary division, whereby the clause is split into a subject noun phrase and a predicate verb phrase. This division is present in the basic analysis of the clause that we find in the works of, for instance, Leonard Bloomfield and Noam Chomsky. Tesnière, argued vehemently against this binary division, preferring instead to position the verb as the root of all clause structure.
Tesnière's stance was that the subject-predicate division stems from term logic and has no place in linguistics. The importance of this distinction is that if one acknowledges the initial subject-predicate division in syntax is real one is to go down the path of phrase structure grammar, while if one rejects this division one must consider the verb as the root of all structure, so go down the path of dependency grammar; the following frameworks are dependency-based: Algebraic syntax Operator grammar Link grammar Functional generative description Lexicase Meaning–text theory Word grammar Extensible dependency grammar Universal DependenciesLink grammar is similar to dependency grammar, but link grammar does not include directionality between the linked words, thus does not describe head-dependent relationships. Hybrid dependency/phrase structure grammar uses dependencies between words, but includes dependencies between phrasal nodes – see for example the Quranic Arabic Dependency Treebank; the derivation trees of tree-adjoining grammar are dependency struc
International Phonetic Alphabet
The International Phonetic Alphabet is an alphabetic system of phonetic notation based on the Latin alphabet. It was devised by the International Phonetic Association in the late 19th century as a standardized representation of the sounds of spoken language; the IPA is used by lexicographers, foreign language students and teachers, speech-language pathologists, actors, constructed language creators and translators. The IPA is designed to represent only those qualities of speech that are part of oral language: phones, phonemes and the separation of words and syllables. To represent additional qualities of speech, such as tooth gnashing and sounds made with a cleft lip and cleft palate, an extended set of symbols, the extensions to the International Phonetic Alphabet, may be used. IPA symbols are composed of one or more elements of two basic types and diacritics. For example, the sound of the English letter ⟨t⟩ may be transcribed in IPA with a single letter, or with a letter plus diacritics, depending on how precise one wishes to be.
Slashes are used to signal broad or phonemic transcription. Letters or diacritics are added, removed or modified by the International Phonetic Association; as of the most recent change in 2005, there are 107 letters, 52 diacritics and four prosodic marks in the IPA. These are shown in the current IPA chart, posted below in this article and at the website of the IPA. In 1886, a group of French and British language teachers, led by the French linguist Paul Passy, formed what would come to be known from 1897 onwards as the International Phonetic Association, their original alphabet was based on a spelling reform for English known as the Romic alphabet, but in order to make it usable for other languages, the values of the symbols were allowed to vary from language to language. For example, the sound was represented with the letter ⟨c⟩ in English, but with the digraph ⟨ch⟩ in French. However, in 1888, the alphabet was revised so as to be uniform across languages, thus providing the base for all future revisions.
The idea of making the IPA was first suggested by Otto Jespersen in a letter to Paul Passy. It was developed by Alexander John Ellis, Henry Sweet, Daniel Jones, Passy. Since its creation, the IPA has undergone a number of revisions. After revisions and expansions from the 1890s to the 1940s, the IPA remained unchanged until the Kiel Convention in 1989. A minor revision took place in 1993 with the addition of four letters for mid central vowels and the removal of letters for voiceless implosives; the alphabet was last revised in May 2005 with the addition of a letter for a labiodental flap. Apart from the addition and removal of symbols, changes to the IPA have consisted of renaming symbols and categories and in modifying typefaces. Extensions to the International Phonetic Alphabet for speech pathology were created in 1990 and adopted by the International Clinical Phonetics and Linguistics Association in 1994; the general principle of the IPA is to provide one letter for each distinctive sound, although this practice is not followed if the sound itself is complex.
This means that: It does not use combinations of letters to represent single sounds, the way English does with ⟨sh⟩, ⟨th⟩ and ⟨ng⟩, or single letters to represent multiple sounds the way ⟨x⟩ represents /ks/ or /ɡz/ in English. There are no letters that have context-dependent sound values, as do "hard" and "soft" ⟨c⟩ or ⟨g⟩ in several European languages; the IPA does not have separate letters for two sounds if no known language makes a distinction between them, a property known as "selectiveness". Among the symbols of the IPA, 107 letters represent consonants and vowels, 31 diacritics are used to modify these, 19 additional signs indicate suprasegmental qualities such as length, tone and intonation; these are organized into a chart. The letters chosen for the IPA are meant to harmonize with the Latin alphabet. For this reason, most letters modifications thereof; some letters are neither: for example, the letter denoting the glottal stop, ⟨ʔ⟩, has the form of a dotless question mark, derives from an apostrophe.
A few letters, such as that of the voiced pharyngeal fricative, ⟨ʕ⟩, were inspired by other writing systems. Despite its preference for harmonizing with the Latin script, the International Phonetic Association has admitted other letters. For example, before 1989, the IPA letters for click consonants were ⟨ʘ⟩, ⟨ʇ⟩, ⟨ʗ⟩, ⟨ʖ⟩, all of which were derived either from existing IPA letters, or from Latin and Greek letters. However, except for ⟨ʘ⟩, none of these letters were used among Khoisanists or Bantuists, as a result they were replaced by the more widespread symbols ⟨ʘ⟩, ⟨ǀ⟩, ⟨ǃ⟩, ⟨ǂ⟩, ⟨ǁ⟩ at the IPA Kiel Convention in 1989. Although the IPA diacritics are featural, there is little systemicity in the letter forms. A retroflex articulation is indicated with a right-swinging tail, as in ⟨ɖ ʂ ɳ⟩, implosion by a top hook, ⟨ɓ ɗ ɠ⟩, but other pseudo-featural elements are due to haphazard derivation and coincidence. For example, all nasal consonants but uvular ⟨ɴ⟩ are based on the form ⟨n⟩: ⟨m ɱ n ɳ ɲ ŋ⟩.
However, the similarity between ⟨m⟩ and ⟨n⟩ is a historical accident. Some of the new letters were ordinary Latin letters tu
Phonology is a branch of linguistics concerned with the systematic organization of sounds in spoken languages and signs in sign languages. It used to be only the study of the systems of phonemes in spoken languages, but it may cover any linguistic analysis either at a level beneath the word or at all levels of language where sound or signs are structured to convey linguistic meaning. Sign languages have a phonological system equivalent to the system of sounds in spoken languages; the building blocks of signs are specifications for movement and handshape. The word'phonology' can refer to the phonological system of a given language; this is one of the fundamental systems which a language is considered to comprise, like its syntax and its vocabulary. Phonology is distinguished from phonetics. While phonetics concerns the physical production, acoustic transmission and perception of the sounds of speech, phonology describes the way sounds function within a given language or across languages to encode meaning.
For many linguists, phonetics belongs to descriptive linguistics, phonology to theoretical linguistics, although establishing the phonological system of a language is an application of theoretical principles to analysis of phonetic evidence. Note that this distinction was not always made before the development of the modern concept of the phoneme in the mid 20th century; some subfields of modern phonology have a crossover with phonetics in descriptive disciplines such as psycholinguistics and speech perception, resulting in specific areas like articulatory phonology or laboratory phonology. The word phonology comes from phōnḗ, "voice, sound," and the suffix - logy. Definitions of the term vary. Nikolai Trubetzkoy in Grundzüge der Phonologie defines phonology as "the study of sound pertaining to the system of language," as opposed to phonetics, "the study of sound pertaining to the act of speech". More Lass writes that phonology refers broadly to the subdiscipline of linguistics concerned with the sounds of language, while in more narrow terms, "phonology proper is concerned with the function and organization of sounds as linguistic items."
According to Clark et al. it means the systematic use of sound to encode meaning in any spoken human language, or the field of linguistics studying this use. Early evidence for a systematic study of the sounds in a language appears in the 4th century BCE Ashtadhyayi, a Sanskrit grammar composed by Pāṇini. In particular the Shiva Sutras, an auxiliary text to the Ashtadhyayi, introduces what may be considered a list of the phonemes of the Sanskrit language, with a notational system for them, used throughout the main text, which deals with matters of morphology and semantics; the study of phonology as it exists today is defined by the formative studies of the 19th-century Polish scholar Jan Baudouin de Courtenay, who shaped the modern usage of the term phoneme in a series of lectures in 1876-1877. The word phoneme had been coined a few years earlier in 1873 by the French linguist A. Dufriche-Desgenettes. In a paper read at the 24th of May meeting of the Société de Linguistique de Paris, Dufriche-Desgenettes proposed that phoneme serve as a one-word equivalent for the German Sprachlaut.
Baudouin de Courtenay's subsequent work, though unacknowledged, is considered to be the starting point of modern phonology. He worked on the theory of phonetic alternations, may have had an influence on the work of Saussure according to E. F. K. Koerner. An influential school of phonology in the interwar period was the Prague school. One of its leading members was Prince Nikolai Trubetzkoy, whose Grundzüge der Phonologie, published posthumously in 1939, is among the most important works in the field from this period. Directly influenced by Baudouin de Courtenay, Trubetzkoy is considered the founder of morphophonology, although this concept had been recognized by de Courtenay. Trubetzkoy developed the concept of the archiphoneme. Another important figure in the Prague school was Roman Jakobson, one of the most prominent linguists of the 20th century. In 1968 Noam Chomsky and Morris Halle published The Sound Pattern of English, the basis for generative phonology. In this view, phonological representations are sequences of segments made up of distinctive features.
These features were an expansion of earlier work by Roman Jakobson, Gunnar Fant, Morris Halle. The features describe aspects of articulation and perception, are from a universally fixed set, have the binary values + or −. There are at least two levels of representation: underlying representation and surface phonetic representation. Ordered phonological rules govern how underlying representation is transformed into the actual pronunciation. An important consequence of the influence SPE had on phonological theory was the downplaying of the syllable and the emphasis on segments. Furthermore, the generativists folded morphophonology into phonology, which both solved and created problems. Natural phonology is a theory based on the publications of its proponent David Stampe in 1969 and in 1979. In this view, phonology is based on a set of universal phonological p
Phonetics is a branch of linguistics that studies the sounds of human speech, or—in the case of sign languages—the equivalent aspects of sign. It is concerned with the physical properties of speech sounds or signs: their physiological production, acoustic properties, auditory perception, neurophysiological status. Phonology, on the other hand, is concerned with the abstract, grammatical characterization of systems of sounds or signs. In the case of oral languages, phonetics has three basic areas of study: Articulatory phonetics: the study of the organs of speech and their use in producing speech sounds by the speaker. Acoustic phonetics: the study of the physical transmission of speech sounds from the speaker to the listener. Auditory phonetics: the study of the reception and perception of speech sounds by the listener; the first known phonetic studies were carried out as early as the 6th century BCE by Sanskrit grammarians. The Hindu scholar Pāṇini is among the most well known of these early investigators, whose four part grammar, written around 350 BCE, is influential in modern linguistics and still represents "the most complete generative grammar of any language yet written".
His grammar formed the basis of modern linguistics and described a number of important phonetic principles. Pāṇini provided an account of the phonetics of voicing, describing resonance as being produced either by tone, when vocal folds are closed, or noise, when vocal folds are open; the phonetic principles in the grammar are considered "primitives" in that they are the basis for his theoretical analysis rather than the objects of theoretical analysis themselves, the principles can be inferred from his system of phonology. Advancements in phonetics after Pāṇini and his contemporaries were limited until the modern era, save some limited investigations by Greek and Roman grammarians. In the millenia between Indic grammarians and modern phonetics the focus of phonetics shifted from the difference between spoken and written language, the driving force behind Pāṇini's account, began to focus on the physical properties of speech alone. Sustained interest in phonetics began again around 1800 CE with the term "phonetics" being first used in the present sense in 1841.
With new developments in medicine and the development of audio and visual recording devices, phonetic insights were able to use and review new and more detailed data. This early period of modern phonetics included the development of an influential phonetic alphabet based on articulatory positions by Alexander Melville Bell. Known as visible speech, it gained prominency as a tool in the oral education of deaf children. Speech sounds are produced by the modification of an airstream exhaled from the lungs; the respiratory organs used to create and modify airflow are divided into three regions: the vocal tract, the larynx, the subglottal system. The airstream can be either ingressive. In pulmonic sounds, the airstream is produced by the lungs in the subglottal system and passes through the larynx and vocal tract. Glottalic sounds use. Clicks or lingual ingressive sounds create an airstream using the tongue. Articulations take place in particular parts of the mouth, they are described by the part of the mouth that constricts airflow and by what part of the mouth that constriction occurs.
In most languages constrictions are made with tongue. Constrictions made by the lips are called labials; the tongue can make constrictions with many different parts, broadly classified into coronal and dorsal places of articulation. Coronal articulations are made with either the tip or blade of the tongue, while dorsal articulations are made with the back of the tongue; these divisions are not sufficient for describing all speech sounds. For example, in English the sounds and are both voiceless coronal fricatives, but they are produced in different places of the mouth. Additionally, that difference in place can result in a difference of meaning like in "sack" and "shack". To account for this, articulations are further divided based upon the area of the mouth in which the constriction occurs. Articulations involving the lips can be made in three different ways: with both lips, with one lip and the teeth, with the tongue and the upper lip. Depending on the definition used, some or all of these kinds of articulations may be categorized into the class of labial articulations.
Ladefoged and Maddieson propose that linguolabial articulations be considered coronals rather than labials, but make clear this grouping, like all groupings of articulations, is equivocable and not cleanly divided. Linguolabials are included in this section as labials given their use of the lips as a place of articulation. Bilabial consonants are made with both lips. In producing these sounds the lower lip moves farthest to meet the upper lip, which moves down though in some cases the force from air moving through the aperature may cause the lips to separate faster than they can come together. Unlike most other articulations, both articulators are made from soft tissue, so bilabial stops are more to be produced with incomplete closures than articulations involving hard surfaces like the teeth or palate. Bilabial stops are unusual in that an articulator in the upper section of the vocal tract moves downwards, as the upper lip shows some active downward movement. Labiodental consonants are made by the lower lip rising to the upper teeth.
Labiodental consonants are most fricatives while labiodental nasals are typologically common. There is debate as to
Computational linguistics is an interdisciplinary field concerned with the statistical or rule-based modeling of natural language from a computational perspective, as well as the study of appropriate computational approaches to linguistic questions. Traditionally, computational linguistics was performed by computer scientists who had specialized in the application of computers to the processing of a natural language. Today, computational linguists work as members of interdisciplinary teams, which can include regular linguists, experts in the target language, computer scientists. In general, computational linguistics draws upon the involvement of linguists, computer scientists, experts in artificial intelligence, logicians, cognitive scientists, cognitive psychologists, psycholinguists and neuroscientists, among others. Computational linguistics has applied components. Theoretical computational linguistics focuses on issues in theoretical linguistics and cognitive science, applied computational linguistics focuses on the practical outcome of modeling human language use.
The Association for Computational Linguistics defines computational linguistics as:...the scientific study of language from a computational perspective. Computational linguists are interested in providing computational models of various kinds of linguistic phenomena. Computational linguistics is grouped within the field of artificial intelligence, but was present before the development of artificial intelligence. Computational linguistics originated with efforts in the United States in the 1950s to use computers to automatically translate texts from foreign languages Russian scientific journals, into English. Since computers can make arithmetic calculations much faster and more than humans, it was thought to be only a short matter of time before they could begin to process language. Computational and quantitative methods are used in attempted reconstruction of earlier forms of modern languages and subgrouping modern languages into language families. Earlier methods such as lexicostatistics and glottochronology have been proven to be premature and inaccurate.
However, recent interdisciplinary studies which borrow concepts from biological studies gene mapping, have proved to produce more sophisticated analytical tools and more trustworthy results. When machine translation failed to yield accurate translations right away, automated processing of human languages was recognized as far more complex than had been assumed. Computational linguistics was born as the name of the new field of study devoted to developing algorithms and software for intelligently processing language data; the term "computational linguistics" itself was first coined by David Hays, founding member of both the Association for Computational Linguistics and the International Committee on Computational Linguistics. When artificial intelligence came into existence in the 1960s, the field of computational linguistics became that sub-division of artificial intelligence dealing with human-level comprehension and production of natural languages. In order to translate one language into another, it was observed that one had to understand the grammar of both languages, including both morphology and syntax.
In order to understand syntax, one had to understand the semantics and the lexicon, something of the pragmatics of language use. Thus, what started as an effort to translate between languages evolved into an entire discipline devoted to understanding how to represent and process natural languages using computers. Nowadays research within the scope of computational linguistics is done at computational linguistics departments, computational linguistics laboratories, computer science departments, linguistics departments; some research in the field of computational linguistics aims to create working speech or text processing systems while others aim to create a system allowing human-machine interaction. Programs meant for human-machine communication are called conversational agents. Just as computational linguistics can be performed by experts in a variety of fields and through a wide assortment of departments, so too can the research fields broach a diverse range of topics; the following sections discuss some of the literature available across the entire field broken into four main area of discourse: developmental linguistics, structural linguistics, linguistic production, linguistic comprehension.
Language is a cognitive skill. This developmental process has been examined using a number of techniques, a computational approach is one of them. Human language development does provide some constraints which make it harder to apply a computational method to understanding it. For instance, during language acquisition, human children are only exposed to positive evidence; this means that during the linguistic development of an individual, only evidence for what is a correct form is provided, not evidence for what is not correct. This is insufficient information for a simple hypothesis testing procedure for information as complex as language, so provides certain boundaries for a computational approach to modeling language development and acquisition in an individual. Attempts have been made to model the developmental process of language acquisition in children from a computational angle, leading to both statistical grammars and connectionist models. Work in this realm has been proposed as a method to explain the evolution of language through history.
Using models, it has been shown that languages