Detecting evolutionary forces in language change
نویسندگان
چکیده
منابع مشابه
Internal and external forces in language change
If every productive form of linguistic expression can be described by some idealized human grammar, an individuals’s variable linguistic behavior (Weinreich, Labov, & Herzog, 1968) can be modeled as a statistical distribution of multiple idealized grammars. The distribution of grammars is determined by the interaction between the biological constraints on human grammar and the properties of lin...
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Article history: Received 19 July 2013 Received in revised form 22 November 2014 Accepted 31 December 2014 Available online 13 January 2015
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Human language, over its evolutionary history, has emerged as one of the fundamental defining characteristic of the modern man. However, this milestone evolutionary process through natural selection has not left any ’linguistic fossils’ that may enable us to trace back the actual course of development of language and its establishment in human societies. Lacking analytical tools to fathom the cr...
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UNLABELLED We present an algorithmic tool for the identification of biologically significant amino acids in proteins of known three dimensional structure. We estimate the degree of purifying selection and positive Darwinian selection at each site and project these estimates onto the molecular surface of the protein. Thus, patches of functional residues (undergoing either positive or purifying s...
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ژورنال
عنوان ژورنال: Nature
سال: 2017
ISSN: 0028-0836,1476-4687
DOI: 10.1038/nature24455