LOG-RATIO COMPOSITIONAL DATA ANALYSIS IN ARCHAEOMETRY* Export

@article{citeulike:925602, abstract = {Compositional data arise commonly in archaeometry, in the study of artefact compositions where the variables measured either sum to 100\%, or can be viewed as a subset of such a set of variables. There has been debate in Archaeometry about the appropriate way to analyse such data statistically, which amounts to argument about how the data should be transformed prior to statistical analysis. This paper reviews aspects of the debate and illustrates, using both simulated and real data, that what has been proposed as the 'correct' theoretical approach-log-ratio analysis-does not always work well. The reasons for this are discussed.}, author = {Baxter, M. J. and Freestone, I. C.}, citeulike-article-id = {925602}, citeulike-linkout-0 = {http://www.blackwell-synergy.com/doi/abs/10.1111/j.1475-4754.2006.00270.x}, citeulike-linkout-1 = {http://dx.doi.org/10.1111/j.1475-4754.2006.00270.x}, comment = {imprim\'{e}}, doi = {10.1111/j.1475-4754.2006.00270.x}, journal = {Archaeometry}, keywords = {analyse-chimique, analyse-en-composantes-principales, archaeometry, statistique}, number = {3}, pages = {511--531}, posted-at = {2006-11-02 13:53:36}, priority = {2}, title = {LOG-RATIO COMPOSITIONAL DATA ANALYSIS IN ARCHAEOMETRY*}, url = {http://dx.doi.org/10.1111/j.1475-4754.2006.00270.x}, volume = {48}, year = {2006} }

TY - JOUR ID - citeulike:925602 L3 - citeulike-article-id:925602 N2 - Compositional data arise commonly in archaeometry, in the study of artefact compositions where the variables measured either sum to 100%, or can be viewed as a subset of such a set of variables. There has been debate in Archaeometry about the appropriate way to analyse such data statistically, which amounts to argument about how the data should be transformed prior to statistical analysis. This paper reviews aspects of the debate and illustrates, using both simulated and real data, that what has been proposed as the 'correct' theoretical approach-log-ratio analysis-does not always work well. The reasons for this are discussed. IS - 3 JF - Archaeometry EP - 531 TI - LOG-RATIO COMPOSITIONAL DATA ANALYSIS IN ARCHAEOMETRY* VL - 48 SP - 511 KW - analyse-chimique KW - analyse-en-composantes-principales KW - archaeometry KW - statistique N1 - imprimé AU - Baxter, MJ AU - Freestone, IC PY - 2006/// UR - http://dx.doi.org/10.1111/j.1475-4754.2006.00270.x ER -