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SUMMARY:Analyse multi-échelle de n-grammes sur 200 années d'archives de 
 presse
DTSTART:20171205T100000
DTEND:20171205T120000
DTSTAMP:20260916T064639Z
UID:038453df3af7f861222ee13749cd2a7ac8a4c4df217acb789916e787
CATEGORIES:Thesis defenses
DESCRIPTION:Vincent Buntinx\nAbstract of thesis\nThe recent availability o
 f large corpora of digitized texts over several centuries opens the way to
  new forms of studies on the evolution of languages. In this thesis\, we s
 tudy a corpus of 4 million press articles covering a period of 200 years. 
 The thesis tries to measure the evolution of written French on this period
  at the level of words and expressions\, but also in a more global way by 
 attempting to define integrated measures of linguistic evolution.\n \nThe
  methodological choice is to introduce a minimum of linguistic hypotheses 
 in this study by developing new measures around the simple notion of n-gra
 m\, a sequence of n consecutive words. The thesis explores on this basis t
 he potential of already known concepts as temporal frequency profiles and 
 their diachronic correlations\, but also introduces new abstractions such 
 as the notion of resilient linguistic kernel or the decomposition of profi
 les into solidified expressions according to simple statistical models. Th
 rough the use of distributed computational techniques\, it develops method
 s to test the relevance of these concepts on a large amount of textual dat
 a and thus allows to propose a virtual observatory of the diachronic evolu
 tions associated with a given corpus.\n \nOn this basis\, the thesis expl
 ores more precisely the multi-scale dimension of linguistic phenomena by c
 onsidering how standardized measures evolve when applied to increasingly l
 ong n-grams. The discrete and continuous scale from the isolated entities 
 (n=1) to the increasingly complex and structured expressions (1 < n < 10) 
 offers a transversal axis of study to the classical differentiations that 
 ordinarily structure linguistics: syntax\, semantics\, pragmatics\, and so
  on. The thesis explores the quantitative and qualitative diversity of phe
 nomena at these different scales of language and develops a novel approach
  by proposing multi-scale measurements and formalizations\, with the aim o
 f characterizing more fundamental structural aspects of the studied phenom
 ena.\n 
LOCATION:BC 420 https://plan.epfl.ch/?room==BC%20420
STATUS:CONFIRMED
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