ic_criterion            Information criterion (IC1/IC2) for selecting
                        number of factors
identify                Identify factor decomposition via SVD
relative_error          Calculate relative error between estimated and
                        true matrices
source_detection        Detect positive and negative transfer sources
                        using ratio method
source_potential        Identify potential sources based on rank
                        comparison using IC criterion
transGFM                Single source transfer learning for generalized
                        factor models
transGFM_multi          Multiple source transfer learning for
                        generalized factor models
