So I've read this article for a project im working on:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4625080/pdf/fnins-09Ortiz-00416.pdfCataln: Cardinality as a highly descriptive feature in myoelectric pattern recognition for decoding motor volition, Chalmers Uni, published in "Frontiers in Neuroscience", 2015
They use cardinality in pattern recognition and claim that it is "highly descriptive".
I can't understand how they have used it or why it would be of any use, if my understanding of cardinality as simply a measure of the size of dataset is correct. Can anyone explain to me what they mean and how they have used cardinality?