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Book chapter

Aggregation of Rating Systems for Emerging Financial Markets

This paper examines the issues of the aggregation and comparison of the credit ratings of various economic agents for risk management purposes in a commercial bank. The empirical results of the study make it possible to increase the assessment of credit risks based on the constructed system of aggregating credit ratings for industrial companies and commercial banks. The work also confirms the relationship between the level of assigned credit ratings and the various phases of the credit cycle. The dynamics at the macroeconomic level shows that the credit ratings of various economic agents change in different directions and are out of sync with time correlation of credit cycles in various phases. The main scientific result of the study is an aggregate-based approach for credit risk evaluation of various economic agents and to develop the quantitative methods for assessing the relationship between the level of credit ratings and the credit cycle.