Pearson correlation
Revision as of 11:39, 9 February 2012 by Zeno Gantner (talk | contribs)
The Pearson correlation is also called Pearson product-moment correlation coefficient (PMCC). It measures the correlation (similarity) between to random variables (in collaborative filtering: user or item vectors). The values lie between -1 (opposite values) and +1 (equality).
