RT Journal Article T1 Applying wrapper-based variable selection techniques to predict MFIs profitability: evidence from Peru A1 Fabio Pietrapiana, A1 Feria Domínguez, José Manuel A1 Troncoso, Alicia K1 Microfinance Institutions (MFIs) K1 Return on Assets (ROA) K1 Wrapper Techniques K1 Random Forest (RF) K1 K-Nearest Neighbours (KNN) K1 M5' K1 Peru AB In this paper, we analyse the main factors explaining the profitability (ROA) of Microfinance Institutions (MFIs) in Peru from 2011 to 2107. We apply three wrapper techniques to asample of 168 Peruvians MFIs and 69 attributes obtained from MIX Market database. After running the algo-rithms M5ʹ, knearest neighbours (KNN) and Random Forest, we find that the M5ʹ algorithm provides the best fit for predicting ROA. Particularly, the key variable of the regression tree is the percentage of expenses over assets and, depending on its value, it is followed by net income after taxes and before donations, or profit margins PB Routledge Taylor&Francis YR 2021 FD 2021-02-15 LK https://hdl.handle.net/10433/19451 UL https://hdl.handle.net/10433/19451 LA en NO JOURNAL OF DEVELOPMENT EFFECTIVENESS, 2021, VOL. 13, NO. 1, 84–99 NO Departamento de Economía Financiera y Contabilidad DS RIO RD May 7, 2026