RT Report T1 A flexible tool for model building: the relevant transformation of the imputs network approach A1 Pérez Amaral, Teodosio A1 Gallo, Giampiero A1 White, Halbert AB A new method, called Relevant Transformation of the Inputs Network Approach (RETINA) is proposed as a tool for model building. It is designed around flexibility (with nonlinear transformations of the predictors of interest), selective search within the range of possible models, out-of-sample forecasting ability and computational simplicity. In tests on simulated data, it shows both a high rate of successful retrieval of the DGP which increases with the sample size and a good performance relative to other alternative procedures. A telephone service demand model is built to show how the procedure applies on real data. PB Facultad de Ciencias Económicas y Empresariales. Instituto Complutense de Análisis Económico (ICAE) YR 2003 FD 2003 LK https://hdl.handle.net/20.500.14352/64518 UL https://hdl.handle.net/20.500.14352/64518 LA eng DS Docta Complutense RD 28 dic 2025