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SUMMARY: A new set of Bayesian modelling tools for compositional legacy da
 ta in archaeology: the case study of Muisca metalwork from Colombia (AD 60
 0-1600)  - Jasmine Vieri\, McDonald Institute for Archaeological Research
DTSTART:20230213T160000Z
DTEND:20230213T173000Z
UID:TALK195277@talks.cam.ac.uk
CONTACT:Simon Carrignon
DESCRIPTION:The chemical compositions of archaeological metals can be used
  as a proxy to discern technological choices relating to\, e.g.\, cultural
  preferences over the use of specific alloy mixtures with different aesthe
 tic and mechanical properties\, as well as to infer raw material procureme
 nt practices. By analysing large numbers of compositional legacy data conc
 urrently\, we can\, in turn\, simultaneously examine local-scale and cross
 -regional differences in such material engagements in the past. This talk 
 introduces a new set of tools that are argued to provide for more accurate
  archaeological reconstructions\, than the less rigorous alternatives curr
 ently used to model cross-regional and compositional data within the field
 . These include beta regression\, intended to account for the compositiona
 l nature of analytical chemical data\; as well as multilevel and Gaussian 
 process modelling\, used to account for the sampling uncertainties inheren
 t to archaeological legacy datasets\, and to permit the explicit modelling
  of sampling interdependencies and compositional variation through space. 
 The methods are discussed in relation to a new case study on the Muisca me
 talwork of pre-Hispanic Colombia (AD 600-1600)\, where the results shown t
 o provide novel insights into the importance of different technological\, 
 environmental\, and cultural drivers behind alloy choice\, as well as into
  past shared communities of practice. The Bayesian framework is adopted th
 roughout\, for both its flexibility in incorporating multiple sources of i
 nformation concurrently\, as well as in providing for intuitive interpreta
 tion of model outputs. \n\n\nAll talks are hybrid\, to assist online you w
 ill need to register for the event by sign-up "here":https://cam-ac-uk.zoo
 m.us/meeting/register/tJUtceugrjIrGNXrttydB_XbuFHMtgssRo33 
LOCATION:McDonald Institute Seminar Room\, Department of Archaeology\, Dow
 ning Site
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