Mr. DongHyeon Cha is now a Ph.D. student at the School of Information & Communication Engineering, Chungbuk National University, Republic of Korea. He received his B.Sc. and M.Sc. in Information and Communication Engineering from Chungbuk National University, Republic of Korea, in 2023 and 2025, respectively. His research interests include big data processing, temporal graph, and subgraph matching.