https://orcid.org/0000-0002-1622-3538
About the Authors
- Hyang-Rim Jo
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Contributed equally to this work with: Hyang-Rim Jo, Kyong-Sok Pak, Chung-Hyok Kim, Il-Jin Zhang
Roles Conceptualization, Formal analysis, Software, Validation, Writing – original draft
Affiliation Faculty of Information Science, Kim Il Sung University, Pyongyang, the Democratic People’s Republic of Korea
- Kyong-Sok Pak
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Contributed equally to this work with: Hyang-Rim Jo, Kyong-Sok Pak, Chung-Hyok Kim, Il-Jin Zhang
Roles Conceptualization, Project administration, Supervision, Writing – original draft, Writing – review & editing
* E-mail: ks.pak0228@ryongnamsan.edu.kp
Affiliation Faculty of Information Science, Kim Il Sung University, Pyongyang, the Democratic People’s Republic of Korea
- Chung-Hyok Kim
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Contributed equally to this work with: Hyang-Rim Jo, Kyong-Sok Pak, Chung-Hyok Kim, Il-Jin Zhang
Roles Formal analysis, Investigation, Software, Writing – original draft
Affiliation Faculty of Information Science, Kim Il Sung University, Pyongyang, the Democratic People’s Republic of Korea
- Il-Jin Zhang
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Contributed equally to this work with: Hyang-Rim Jo, Kyong-Sok Pak, Chung-Hyok Kim, Il-Jin Zhang
Roles Data curation, Software, Validation, Writing – original draft
Affiliation Faculty of Information Science, Kim Il Sung University, Pyongyang, the Democratic People’s Republic of Korea
Competing Interests
The authors have declared that no competing interests exist.