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Historical Glottometry
Historical Glottometry is a method used in historical linguistics. It is a quantitative, non-cladistic approach to language subgrouping. The aim of Historical Glottometry (HG) is to address the limitations of the tree model when applied to dialect continua and linkages. It acknowledges that the genealogical structure of a linkage typically consists of entangled subgroups, and provides ways to reconstruct that internal structure by measuring the relative strength of these subgroups. This approach was developed by Alexandre François (CNRS) and Siva Kalyan ( ANU). François (2014). François (2017). Kalyan & François (2018). While the method was initially applied to Oceanic languages, in recent years it has been applied to a much broader range of language families. Rationale Historical Glottometry grew out of the observation that a large number of language families in the world form linkages (a term coined by Malcolm Ross), i.e. they evolved out of former dialect continua in whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Historical Linguistics
Historical linguistics, also termed diachronic linguistics, is the scientific study of language change over time. Principal concerns of historical linguistics include: # to describe and account for observed changes in particular languages # to reconstruct the pre-history of languages and to determine their relatedness, grouping them into language families ( comparative linguistics) # to develop general theories about how and why language changes # to describe the history of speech communities # to study the history of words, i.e. etymology Historical linguistics is founded on the Uniformitarian Principle, which is defined by linguist Donald Ringe as: History and development Western modern historical linguistics dates from the late-18th century. It grew out of the earlier discipline of philology, the study of ancient texts and documents dating back to antiquity. At first, historical linguistics served as the cornerstone of comparative linguistics, primarily as a t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dialectometry
Dialectometry is the quantitative and computational branch of dialectology, the study of dialect. This sub-field of linguistics studies language variation using the methods of statistics; it arose in the 1970s and 80s as a result of seminal work by J. Séguy and Hans Goebl. The research concentrates mainly on the regional distribution of dialect similarities, such as cores of dialect and overlapping zones, which can be labelled according to a more or less slight variance of dialect between bordering locations. However, analysis of dialect relationships cannot always be clearly depicted by cladistics, since there are often dialect continuum A dialect continuum or dialect chain is a series of Variety (linguistics), language varieties spoken across some geographical area such that neighboring varieties are Mutual intelligibility, mutually intelligible, but the differences accumulat ... cases and also examples with elements of convergence, as well as division.Gary Simons. 1977. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sogeram Languages
The Sogeram languages are a family of languages in the Madang stock of New Guinea. They are named after the Sogeram River.Usher, Timothy. 2020Sogeram River ''New Guinea World''. In earlier classifications, such as that of Wurm, most of the Sogeram family were called "Wanang", after the Wanang River. The exceptions were Faita, placed as a separate branch of the Southern Adelbert languages, and Mum–Sirva (then called the "Sikan" family), which were classified with the other branch, Josephstaal ( Tomul River). Languages Daniels (2016) classifies the Sogeram languages in three branches, including some recently documented languages.Daniels, Don. 2016. Magɨ: An undocumented language of Papua New Guinea. ''Oceanic Linguistics'' 55: 199-224. ;Sogeram *West Sogeram ** Mand ** Nend *Central Segeram ** Manat ** Apalɨ **North Central Sogeram (Sikan): Mum, Sirva *"East" Sogeram ** Gants ** Kursav **Aisian: Magɨ, Aisi Daniels (2017), following Pawley, resolves the issue of Gants by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neighbor-net
NeighborNet is an algorithm for constructing phylogenetic networks which is loosely based on the neighbor joining algorithm. Like neighbor joining, the method takes a distance matrix as input, and works by agglomerating clusters. However, the NeighborNet algorithm can lead to collections of clusters which overlap and do not form a hierarchy (mathematics), hierarchy, and are represented using a type of phylogenetic network called a Split graph, splits graph. If the distance matrix satisfies the Kalmanson combinatorial conditions then Neighbor-net will return the corresponding circular ordering. The method is implemented in the SplitsTree and R (programming language), R/Phangorn packages. Examples of the application of Neighbor-net can be found in virology, horticulture, dinosaur genetics, Quantitative comparative linguistics, comparative linguistics, and archaeology. References Computational phylogenetics Genetics software Molecular biology {{bioinformatics-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vanuatu
Vanuatu ( or ; ), officially the Republic of Vanuatu (french: link=no, République de Vanuatu; bi, Ripablik blong Vanuatu), is an island country located in the South Pacific Ocean. The archipelago, which is of volcanic origin, is east of northern Australia, northeast of New Caledonia, east of New Guinea, southeast of the Solomon Islands, and west of Fiji. Vanuatu was first inhabited by Melanesian people. The first Europeans to visit the islands were a Spanish expedition led by Portuguese navigator Fernandes de Queirós, who arrived on the largest island, Espíritu Santo, in 1606. Queirós claimed the archipelago for Spain, as part of the colonial Spanish East Indies, and named it . In the 1880s, France and the United Kingdom claimed parts of the archipelago, and in 1906, they agreed on a framework for jointly managing the archipelago as the New Hebrides through an Anglo-French condominium. An independence movement arose in the 1970s, and the Republic of Vanuatu was fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dialectology
Dialectology (from Greek , ''dialektos'', "talk, dialect"; and , ''-logia'') is the scientific study of linguistic dialect, a sub-field of sociolinguistics. It studies variations in language based primarily on geographic distribution and their associated features. Dialectology treats such topics as divergence of two local dialects from a common ancestor and synchronic variation. Dialectologists are ultimately concerned with grammatical, lexical and phonological features that correspond to regional areas. Thus they usually deal not only with populations that have lived in certain areas for generations, but also with migrant groups that bring their languages to new areas (see language contact). Commonly studied concepts in dialectology include the problem of mutual intelligibility in defining languages and dialects; situations of diglossia, where two dialects are used for different functions; dialect continua including a number of partially mutually intelligible dialects; and pluric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isogloss
An isogloss, also called a heterogloss (see Etymology below), is the geographic boundary of a certain linguistic feature, such as the pronunciation of a vowel, the meaning of a word, or the use of some morphological or syntactic feature. Major dialects are typically demarcated by ''bundles'' of isoglosses, such as the Benrath line that distinguishes High German from the other West Germanic languages and the La Spezia–Rimini Line that divides the Northern Italian languages and Romance languages west of Italy from Central Italian dialects and Romance languages east of Italy. However, an ''individual'' isogloss may or may not have any coterminus with a language border. For example, the front-rounding of /y/ cuts across France and Germany, while the /y/ is absent from Italian and Spanish words that are cognates with the /y/-containing French words. One of the best-known isoglosses is the centum-satem isogloss. Similar to an isogloss, an isograph is a distinguishing feature of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intersection (set Theory)
In set theory, the intersection of two sets A and B, denoted by A \cap B, is the set containing all elements of A that also belong to B or equivalently, all elements of B that also belong to A. Notation and terminology Intersection is written using the symbol "\cap" between the terms; that is, in infix notation. For example: \\cap\=\ \\cap\=\varnothing \Z\cap\N=\N \\cap\N=\ The intersection of more than two sets (generalized intersection) can be written as: \bigcap_^n A_i which is similar to capital-sigma notation. For an explanation of the symbols used in this article, refer to the table of mathematical symbols. Definition The intersection of two sets A and B, denoted by A \cap B, is the set of all objects that are members of both the sets A and B. In symbols: A \cap B = \. That is, x is an element of the intersection A \cap B if and only if x is both an element of A and an element of B. For example: * The intersection of the sets and is . * The number 9 is in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synapomorphy And Apomorphy
In phylogenetics, an apomorphy (or derived trait) is a novel character or character state that has evolved from its ancestral form (or plesiomorphy). A synapomorphy is an apomorphy shared by two or more taxa and is therefore hypothesized to have evolved in their most recent common ancestor. ) In cladistics, synapomorphy implies homology. Examples of apomorphy are the presence of erect gait, fur, the evolution of three middle ear bones, and mammary glands in mammals but not in other vertebrate animals such as amphibians or reptiles, which have retained their ancestral traits of a sprawling gait and lack of fur. Thus, these derived traits are also synapomorphies of mammals in general as they are not shared by other vertebrate animals. Etymology The word —coined by German entomologist Willi Hennig—is derived from the Ancient Greek words (''sún''), meaning "with, together"; (''apó''), meaning "away from"; and (''morphḗ''), meaning "shape, form". Clade analysis Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
August Leskien
August Leskien (; 8 July 1840 – 20 September 1916) was a German linguist active in the field of comparative linguistics, particularly relating to the Baltic and Slavic languages. Biography Leskien was born in Kiel. He studied philology at the universities of Kiel and Leipzig, receiving his doctorate from the latter in 1864. He taught Latin and Ancient Greek at the from 1864 to 1866. In 1866, he began studying comparative linguistics under August Schleicher at the University of Jena. He completed his habilitation in 1867 and went on to lecture at the University of Göttingen. He was appointed as the extraordinary professor (außerordentlicher Professor) of comparative linguistics and Sanskrit at Jena in 1868. Two years later, he was named as the extraordinary professor of Slavic philology at the University of Leipzig, where he delivered the first course there in Slavic languages. He was promoted to full professorship (ordentlicher Professor) in 1876 and remained in the positio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clade
A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, the equivalent Latin term ''cladus'' (plural ''cladi'') is often used in taxonomical literature. The common ancestor may be an individual, a population, or a species (extinct or extant). Clades are nested, one in another, as each branch in turn splits into smaller branches. These splits reflect evolutionary history as populations diverged and evolved independently. Clades are termed monophyletic (Greek: "one clan") groups. Over the last few decades, the cladistic approach has revolutionized biological classification and revealed surprising evolutionary relationships among organisms. Increasingly, taxonomists try to avoid naming taxa that are not clades; that is, taxa that are not monophyletic. Some of the relationships between organisms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
