mvpa.measures.irelief: FeaturewiseDatasetMeasure performing multivariate Iterative RELIEF
(I-RELIEF) algorithm.
See : Y. Sun, Iterative RELIEF for Feature Weighting: Algorithms, Theories,
and Applications, IEEE Trans. on Pattern Analysis and Machine Intelligence
(TPAMI), vol. 29, no. 6, pp. 1035-1051, June 2007.