Professor Hideyuki Kawashima of the Faculty of Environment and Information Studies presented a paper at the international conference VLDB 2025 held in London. The paper discusses a method for improving the performance of transaction processing, a core technology essential for bank transfers and credit card payments.
VLDB (Very Large Data Bases) is an annual international conference for experts in a wide range of fields, including researchers, vendors, practitioners, developers, and users involved in data management and scalable data science. It has earned an A* rating from CORE Rank (Computing Research and Education Association of Australasia), an evaluation system that ranks the quality of academic societies and conferences in the field of computer science. Having a paper accepted and presented at VLDB, one of the world's top-tier conferences, is a remarkable achievement.
Paper Title
Oze: Decentralized Graph-Based Concurrency Control for Long-Running Update Transactions
Jun Nemoto, Taksahi Kambayashi, Takashi Hoshino, Hideyuki Kawashima
Comment from Professor Hideyuki Kawashima
I presented this paper at VLDB, a top conference in the database field. While there are various levels of international conferences in computer science, VLDB is recognized as a premier conference (CORE Rank = A*). The review process was extremely rigorous and thorough, which allowed us to significantly improve the quality of the paper. I would like to express my sincere gratitude to all the reviewers.
Transactions are often used in payments, but they are actually also used in parts assembly in the manufacturing industry. In this case, unlike payments, transactions become very long. Furthermore, because modern techniques utilize a narrow theoretical space, performance degrades.
On the other hand, MVSG is a method that possesses a vast space. This was researched around 1983, 1985, and 1988, but its parallelization had not been explored for about 30 years. We discovered a method to decentralize MVSG, making parallel processing of MVSG feasible. I believe the proposed method, Oze, is a simple and beautiful technology.
Through this technology, I hope to realize real-time changes in social networks and data lakes—which had been given up on until now—and make the world more transparent.
Source: Shonan Fujisawa Campus (SFC) Office, General Affairs