Quantitative efficiency assessment based on the dynamic slack-based network data envelopment analysis for commercial banks in Ghana

Abstract

Background: Gains in bank efficiency improvement have widely been regarded as one of the most effective and efficient means of ensuring sustainability of a financial system. Aim: This article proposes a relative dynamic two-stage network data envelopment analysis model for measurement of bank efficiency based on the slack-based measure. Setting: Twenty-seven banks in Ghana during the period of 2009–2014. Methods: By considering simultaneous processes within the framework of two-stage data envelopment analysis, the slack-based measure approach identifies the sources of inefficiency in the banks. Results: In the empirical analysis, non-performing loans are an undesirable output in one production process, which should also be treated as a carry-over factor; that is to say, some non-performing loans from the preceding year can be collected in the current year. The carry-over factors should be used to indicate the presence of performance gaps that exist in the banks. The proposed model was used to measure the efficiency of the 27 banks in Ghana during the period of 2009–2014. We also present useful suggestions for improvement in bank efficiency based on the empirical results. Conclusion: The 27 main commercial banks in Ghana are far from efficient. For all banks, the efficiency score in the second stage is much higher than that of the first stage. That means more attention should be paid to the first stage of production in order to increase the banks’ efficiency.

Efficiency and its determinants in the Algerian banks: network data envelopment analysis and partial least squares regression

“…An intermediate measure is an input and an output at the same time, in other words, it is produced from one stage as output to be used for another stage as input. Many studies have adopted deposits as the intermediate measure (Akther et al, 2013;An et al, 2015;Fukuyama and Matousek, 2011;Liu et al, 2020;Wang et al, 2014;Yang and Liu, 2012;Zhou et al, 2018).…”

Measuring Dynamic Energy Efficiency in Africa: A Slack‐Based DEA Approach

“…Li et al 23 introduced an extended version of the SBM model to systematically measure environmental efficiency from the period of 1991 to 2010. Besides energy efficiency, the SBM methodological framework was also used to exploit the efficiency in the banking industry, 24,25 industry efficiency, 26 and educational efficiency 27,28 …”

“…Li et al 23 introduced an extended version of the SBM model to systematically measure environmental efficiency from the period of 1991 to 2010. Besides energy efficiency, the SBM methodological framework was also used to exploit the efficiency in the banking industry, 24,25 industry efficiency, 26 and educational efficiency. 27,28 Furthermore, in the available literature, some researchers employed the dynamic DEA modeling technique for measuring the dynamic nature of DMUs over two consecutive periods.…”

Process-oriented improvement: a modern look at drawing the organizational progress roadmap

“…As the main elements in directing and managing funds towards manufacturing units and regulating money flows, banks have a special place in the economic growth of societies. Without monetary and financial institutions such as the banks, the economic development of countries is not possible (Zhou et al, 2018).…”