SEONGYUN KO

Ph.D. Student, POSTECH

Pohang, South Korea

syko@dblab.postech.ac.kr

Education

  • Ph.D. (2015. 2 ~ 2021. 2) @ POSTECH, South Korea, Dept. of Creative IT Convergence Engineering

  • B.S. (2011. 2 ~ 2015. 2) @ POSTECH, South Korea, Dept. of Electronic and Electrical Engineering (Summa Cum Laude)

Industry Experience

  • Intern (2015. 6 ~ 2015. 9) @ Oracle Labs, CA, USA

    • Participated in Parallel Graph AnalytiX (PGX) project: (1) Performance analysis and optimization of graph analytics queries for large-scale machines (X5-2, T5-8, and M7-8), (2) Efficient retrieval of subgraphs from databases

  • Intern (2016. 6 ~ 2016. 9) @ AT&T Labs, NJ, USA

    • Worked on Data Feed Management System (DFMS): (1) Formal modeling of DFMS (e.g., Apache Kafka, Rabbit MQ, and Bistro in AT&T), (2) Performance modeling and development of performance simulator

Publications

  • Lee, J., Lee, H., Ko, S., Kim, K., Andrei, M., Keller, F., and Han, W., "Asymmetric-Partition Replication for Highly Scalable Distributed Transaction Processing in Practice," In 46th Int'l Conf. on Very Large Data Bases (VLDB) / Proc. the VLDB Endowment (PVLDB), Vol. 13, No. 12, August 2020.

  • Park, Y., Ko, S., Bhowmick, S., Kim, K., Hong, K., Han, W., "G-CARE: A Framework for Performance Benchmarking of Cardinality Estimation Techniques for Subgraph Matching," In Proc. 46th Int'l conf. on Management of Data, ACM SIGMOD, Portland, USA, June 2020.

  • Ko, S. and Han, W., "TurboGraph++: A Scalable and Fast Graph Analytics System," In Proc. 44th Int'l conf. on Management of Data, ACM SIGMOD, Huston, USA, June 2018.

  • Lee, J., Shin, H., Park, C., Ko, S., Chun, Y., Noh, J., Stephan, W., and Han, W., "Hybrid Garbage Collection for Multi-Version Concurrency Control in SAP HANA," In Proc. 42nd Int'l conf. on Management of Data, ACM SIGMOD, San Francisco, USA, June 2016.

  • Kim, H., Lee, J., Bhowmick, S., Han, W., Lee, J., Ko, S., and Jarrah, M., "DualSim: Parallel Subgraph Enumeration in a Massive Graph on a Single Machine," In Proc. 42nd Int'l conf. on Management of Data, ACM SIGMOD, San Francisco, USA, June 2016.

Areas of Interest

  • Distributed Systems

  • Cloud Efficiency

  • Data Analytics and Machine Learning Framework Systems

  • Databases and Transaction Processing

Patents

  • Lee, J., Park, C.G., Noh, J., Stephan, W., Shin, H. and Ko, S., SAP SE, 2019. Interval garbage collection for multi-version concurrency control in database systems. U.S. Patent 10,346,298.

  • Lee, J., Park, C.G., Noh, J., Chuh, Y., Shin, H. and Ko, S., SAP SE, 2018. Hybrid garbage collection for multi-version concurrency control in database systems. U.S. Patent 10,102,120.