http://hdl.handle.net/10256/628 Fri, 08 Aug 2025 03:43:48 GMT 2025-08-08T03:43:48Z http://hdl.handle.net/10256/672 Compositional data analysis of archaeological glass: problems and possible solutions Baxter, M.J.; Beardah, C.C.; Cool, H.E.M.; Jackson, C.M. Thió i Fernández de Henestrosa, Santiago; Martín Fernández, Josep Antoni Presentation in CODAWORK'03, session 4: Applications to archeometry Thu, 16 Oct 2003 00:00:00 GMT http://hdl.handle.net/10256/672 2003-10-16T00:00:00Z http://hdl.handle.net/10256/671 Compositional data analysis in archaeometry Baxter, M.J.; Beardah, C.C.; Cool, H.E.M.; Jackson, C.M. Thió i Fernández de Henestrosa, Santiago; Martín Fernández, Josep Antoni We shall call an n × p data matrix fully-compositional if the rows sum to a constant, and sub-compositional if the variables are a subset of a fully-compositional data set1. Such data occur widely in archaeometry, where it is common to determine the chemical composition of ceramic, glass, metal or other artefacts using techniques such as neutron activation analysis (NAA), inductively coupled plasma spectroscopy (ICPS), X-ray fluorescence analysis (XRF) etc. Interest often centres on whether there are distinct chemical groups within the data and whether, for example, these can be associated with different origins or manufacturing technologies Thu, 16 Oct 2003 00:00:00 GMT http://hdl.handle.net/10256/671 2003-10-16T00:00:00Z