PEDRO ANTONIO GUTIÉRREZ PEÑACESAR HERVAS MARTINEZ2026-01-292026-01-29201510.1016/j.eswa.2014.08.0082-s2.0-84907513648https://www.scopus.com/inward/record.uri?eid=2-s2.https://ucocris.uco.es/handle/123456789/25639Artificial IntelligenceComputer Science ApplicationsEngineering (all)Classification of countries' progress toward a knowledge economy based on machine learning classification techniquesresearch article