Gómez-González, José Eduardo; Hinojosa, Inés Paola … - In: Economic Modelling 27 (2010) 1, pp. 89-96
This paper presents a methodology for estimating time-homogeneous credit quality transition matrices. Using a unique data set on credit ratings of commercial loans in Colombia, we show that 70% of the time we cannot reject the null hypothesis of time homogeneity of transition matrices estimated...