find the the parameters resulting in the minimal results for a given evaluation measure using k-fold cross-validation . the recommender will be set to the best parameter value after calling this method . concode_field_sep PlaceHolder placeHolder concode_field_sep double findMinimumExponential concode_elem_sep double findMinimumExponential
double function ( String arg0 , String arg1 , double [ ] arg2 , RatingPredictor arg3 , int arg4 ) { IRatings loc0 = arg3 . getRatings ( ) ; RatingCrossValidationSplit loc1 = new RatingCrossValidationSplit ( loc0 , arg4 ) ; double loc2 = findMinimum ( arg0 , arg1 , arg2 , arg3 , loc1 ) ; arg3 . setRatings ( loc0 ) ; return loc2 ; }