A Simultaneous Stochastic Frontier Model with Dependent Error Components and Dependent Composite Errors: An Application to Chinese Banking Industry

Jianxu Liu, Mengjiao Wang, Ji Ma, Sanzidur Rahman () and Songsak Sriboonchitta
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Jianxu Liu: Faculty of Economics, Shandong University of Finance and Economics, Jinan 250000, China
Mengjiao Wang: Faculty of Economics, Chiang Mai University, Chiang Mai 50200, Thailand
Ji Ma: Faculty of Economics, Chiang Mai University, Chiang Mai 50200, Thailand
Songsak Sriboonchitta: Faculty of Economics, Chiang Mai University, Chiang Mai 50200, Thailand

Mathematics, 2020, vol. 8, issue 2, 1-23

Abstract: The paper develops a simultaneous equations stochastic frontier model (SFM) with dependent random noise and inefficiency components of individual equations as well as allowing dependence across all equations of the model using copula functions. First, feasibility of our developed model was verified via two simulation studies. Then the model was applied to assess cost efficiency and market power of the banking industry of China using a panel data of 37 banks covering the period 2013–2018. Results confirmed that our simultaneous SFM with dependent random noise and inefficiency components outperformed its predecessor, which is a simultaneous SFM with dependent composite errors but with independent random noise and inefficiency components of individual SFMs as well as the conventional single-equation SFM. Apart from the statistical and computational superiority of our developed model, we also see that Chinese banks in general have a high level of cost efficiency and that competition in the banking industry of China mainly exists in state-owned banks and joint stock banks. Presence of economies of scales as well as diseconomies of scales were found in different banks. Also, the state-owned banks embraced most sophisticated technologies thereby allowing them to operate with the highest level of cost efficiency.

Keywords: simultaneous SFM; dependent error components; copula functions; simulation study; market power; cost efficiency; technology gap ratio (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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