Is it true that the released Matlab version only considers the mutual information based mRMR?
A. Yes. If you want to use other variants of mRMR, such as correlation, distance, or t-test/F-test based, you can simply replace the mutual information computing function using the corrcoef(.) function in Matlab (using correlation as an example). All these variants have been described in the JBCB 2005/CSB 2003 papers.