STATIS method on Free Sorting data. A lot of supplementary informations are also computed
statis_FreeSort(Data, NameSub=NULL, Graph_obj=TRUE, Graph_weights=TRUE)
data frame or matrix. Corresponds to all variables that contain subjects results. Each column corresponds to a subject and gives the groups to which the products (rows) are assigned
string vector. Name of each subject. Length must be equal to the number of clumn of the Data. If NULL, the names are S1,...Sm. Default: NULL
logical. Show the graphical representation od the objects? Default: TRUE
logical. Should the barplot of the weights be plotted? Default: TRUE
a list with:
a list with:
RV: the RV matrix: a matrix with the RV coefficient between subjects
compromise: a matrix which is the compromise of the subjects (akin to a weighted average)
weights: the weights associated with the subjects to build the compromise
lambda: the first eigenvalue of the RV matrix
overall error : the error for the STATIS criterion
error_by_conf: the error by configuration (STATIS criterion)
rv_with_compromise: the RV coefficient of each subject with the compromise
homogeneity: homogeneity of the subjects (in percentage)
coord: the coordinates of each object
eigenvalues: the eigenvalues of the svd decomposition
inertia: the percentage of total variance explained by each axis
error_by_obj: the error by object (STATIS criterion)
scalefactors: the scaling factors of each subject
proj_config: the projection of each object of each subject on the axes: presentation by subject
proj_objects: the projection of each object of each subject on the axes: presentation by object
Lavit, C., Escoufier, Y., Sabatier, R., Traissac, P. (1994). The act (statis method). Computational 462 Statistics & Data Analysis, 18 (1), 97-119.\
Llobell, F., Cariou, V., Vigneau, E., Labenne, A., & Qannari, E. M. (2018). Analysis and clustering of multiblock datasets by means of the STATIS and CLUSTATIS methods.Application to sensometrics. Food Quality and Preference, in Press.
# NOT RUN {
data(choc)
res.sta=statis_FreeSort(choc)
# }
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