Item
Universitat de Girona. Departament dâ€™InformÃ tica i MatemÃ tica Aplicada  
Gallo, M.  
2011 May 11  
For the exploratory analysis of threeway data, e.g., measurements of a number of objects, on a number of variables at different points in time, Tucker analysis is one of the most applied technique to study threeway array when the data are approximately trilinear. It can be considered a three way generalization of PCA (Principal Component Analysis). Like PCA, to interpret the results from these methods, it is possible, in addition to inspecting the loadings matrices and core array, inspect visual representation of the outcome. When the data are particular ratios, as in the case of compositional data, these models should consider the special problems that compositional data gives. Aim of this work is describe how an analysis of compositional data by Tucker analysis is possible and how the results should be interpreted. Moreover, a procedure for displaying the results for objects, variables and occasions will be given  
application/pdf  
http://hdl.handle.net/10256/13611  
eng  
Universitat de Girona. Departament dâ€™InformÃ tica i MatemÃ tica Aplicada  
CoDaWork 2011. The 4th International Workshop on Compositional Data Analysis  
Tots els drets reservats  
AnÃ lisi multivariable  Congressos
Multivariate analysis  Congresses EstadÃstica matemÃ tica  Congressos Mathematical statistics  Congresses 

Threeway Compositional Data Analysis  
info:eurepo/semantics/conferenceObject  
DUGiDocs 