Correspondence to: 1AI Competency Center, Shinhan Bank, 55, Sejong-daero, Jung-gu, Seoul 04513, Korea.
2AI Competency Center, Shinhan Bank, 55, Sejong-daero, Jung-gu, Seoul 04513, Korea.
3AI Competency Center, Shinhan Bank, 55, Sejong-daero, Jung-gu, Seoul 04513, Korea.
4Corresponding author: AI Competency Center, Shinhan Bank, 55, Sejong-daero, Jung-gu, Seoul 04513, Korea. E-mail:
jihwan woo@korea.ac.kr Received December 21, 2020; Revised January 21, 2021; Accepted January 27, 2021.
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