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In many situations, a researcher is interested in the analysis of the scores of a set of observation units on a set of variables. However, in medicine, it is very frequent that the information is replicated at different occasions. The occasions can be time‐varying or refer to different conditions. In such cases, the data can be stored in a 3‐way array or tensor. The Candecomp/Parafac and Tucker3 methods...
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