Tensorial Principal Component Analysis in Detecting Temporal Trajectories of Purchase Patterns in Loyalty Card Data: Retrospective Cohort Study
Tensorial Principal Component Analysis in Detecting Temporal Trajectories of Purchase Patterns in Loyalty Card Data: Retrospective Cohort Study
Reija Autio
1
, PhD ;
Joni Virta
2
, PhD ;
Klaus Nordhausen
3
, PhD ;
Mikael Fogelholm
4
, SCD ;
Maijaliisa Erkkola
4
, PhD ;
Jaakko Nevalainen
1
, PhD
1
Faculty of Social Sciences (Health Sciences), Tampere University, Tampere, Finland
2
Department of Mathematics and Statistics, University of Turku, Turku, Finland
3
Department of Mathematics and Statistics, University of Jyväskylä, Jyväskylä, Finland
4
Department of Food and Nutrition, University of Helsinki, Helsinki, Finland