Predicting the marginal capital-output ratio for China: An application of probabilistic random walks - Bernal-Bellón, José Reyes; Velásquez, Javier Oswaldo Rodriguez; Herrera, Sandra Catalina Correa; Bohórquez, Signed Esperanza Prieto; Méndez, Jorge Eliécer Gaitán (Cuadernos de economía (Santafé de Bogotá), 2026)