A note on fuzzy regression model with fuzzy input and output data for manpower forecasting

Lee and Chen (Fuzzy Sets and Systems 119 (2001) 205) introduced a generalized fuzzy linear regression model and proposed a nonlinear programming model to identify the fuzzy parameters and their vagueness for the generalized regression model. In this note, we show that the proposed nonlinear programming model is invalid. (C) 2003 Elsevier B.V. All rights reserved.