PUBLICATION

International Journals

[2022]

  • Concurrent and Robust End-to-End Data Integrity Verification Scheme for Flash-Based Storage Devices 
      • Hwajung Kim, Inhwi Hwang, Jeongeun Lee, Heon Y. Yeom, Hanul Sung
      • IEEE Access
      • vol. 10, pp. 36350-36361,  Mar. 2022

[2021]

    • Understanding the Performance Characteristics of Computational Storage Drives: A Case Study with SmartSSD 
      • Hwajung Kim, Heon Y. Yeom, Hanul Sung
      • Electronics
      • vol. 10, iss. 21, pp. 2617-2629, Oct. 2021
    • Validity Tracking Based Log Management for In-Memory Databases 
      • Kwangjin Lee, Hwajung Kim, Heon Y. Yeom 
      • IEEE Access
      • vol. 9, pp. 111493-111504,  Aug. 2021

[2020]

  • Design and Implementation of an I/O Isolation Scheme for Key-Value Store on Multiple Solid-State Drives 
      • Hwajung Kim, Heon Young Yeom, Yongseok Son 
      • Cluster Computing: The journal of Networks, Software Tools and Applications
      • vol. 23, iss.3, pp. 2301-2313, Sep. 2020

[2018]

  • Optimizing of Metadata Management in Large-scale File Systems
    • Nae Young Song, Hwajung Kim, Hyuck Han, Heon Young Yeom
    • Cluster Computing: The journal of Networks, Software Tools and Applications
    • vol. 21, iss.4, pp. 1865-1879, Jun. 2018

International Conferences

[2022]

    • LPR: Learning-based Page Replacement Scheme for Scientific Applications
      • Hwajung Kim, Heon Y. Yeom
      • In Proceedings of the 23rd International Middleware Conference: Industrial Track (Middleware'22)
      • Quebec, QC, Canada, pp. 36-42, Nov. 7-11. 2022

[2021]

    • MulConn: User-Transparent I/O Subsystem for High-Performance Parallel File systems
      • Hwajung Kim, Jiwoo Bang, Dong Kyu Sung, Hyeonsang Eom, Heon Y. Yeom, Hanul Sung
      • In Proceedings of IEEE International Conference on High Performance Computing, Data, and Analytics (HiPC'21)
      • Virtual Conference, pp. 53-62, Dec.17-18. 2021
    • Competition-Based Adaptive Caching for Out-of-core Graph Processing
      • Kihyeon Myung, Hwajung Kim, Yunjae Lee, Heon Y. Yeom
      • In Proceedings of IEEE/ACM 21st International Symposium on Cluster, Cloud and Internet Computing (CCGrid'21)
      • Virtual Conference, pp. 31-40, May 10-13. 2021
  • Efficient and Robust Data Integrity Verification Scheme for High-Performance Storage Devices
      • Hwajung Kim, Inhwi Hwang, Heon Y. Yeom
      • In Proceedings of The 36th ACM/SIGAPP Symposium on Applied Computing (SAC'21)
      • Virtual Conference, pp. 1199-1202, Mar. 22-26. 2021

[2020]

    • An Efficient Database Backup and Recovery Scheme using Write-Ahead Logging
      • Hwajung Kim, Heon Young Yeom, Yongseok Son
      • In Proceedings of IEEE 13th International Conference on Cloud Computing (CLOUD'20)
      • Beijing, China / Virtual Conference, pp. 405-413, Oct. 19-23. 2020

[2019]

  • IsoKV: An Isolation Scheme for Key-Value Stores by Exploiting Internal Parallelism in SSD
    • Heerak Lim, Hwajung Kim, Kihyeon Myung, Heon Young Yeom, Yongseok Son
    • In Proceedings of IEEE International Conference on High Performance Computing, Data, and Analytics (HiPC'19)
    • Hyderabad, India, pp. 247-256, Dec. 17-20. 2019
  • An I/O Isolation Scheme for Key-value Store on Multiple Solid-State Drives
    • Hwajung Kim, Heon Young Yeom, Yongseok Son
    • In Proceedings of IEEE 4th International Workshops on Foundations and Applications of Self* Systems (FAS* W)
    • Umea, Sweden, pp.170-175, Jun. 20, 2019

[2018]

    • Efficient Dentry Lookup with Backward Finding Mechanism
      • Nae Young Song, Hwajung Kim, Hyuck Han, Heon Young Yeom
      • In Proceedings of the International Conference on High Performance Computing in Asia-Pacific Region (HPCAsia)
      • Tokyo, Japan, pp.299-308, Jan. 2018

[2017]

    • Improving Small File I/O Performance for Massive Digital Archives
      • Hwajung Kim, Heon Young Yeom
      • In Proceedings of the IEEE 13th International Conference on e-Science (e-Science)
      • Auckland, New Zealand, pp. 256-265, Oct. 2017

[2014]

    • UDP-DC2: User Data Processing Platform Based on Device-Centric Cloud
      • Inchul Hwang, Sunhee Youm, Soohong Park, Hwajung Kim
      • In Proceedings of the International Conference on Advanced Information Networking and Applications Workshops
      • Victoria, Canada, pp. 139-143, May 2014

Domestic Journals (Republic of Korea, in Korean)

[2022]

    • 효율적 공간 활용을 위한 슬롯 공유 필터의 설계 및 구현
      • (English title) Design and Implementation of a Slot Sharing Filter for Efficient Space Utilization
      • 김화정, 이광진, 이인선, 염헌영, 박지웅
      • 정보과학회 컴퓨팅의 실제 논문지 (KIISE Transactions on Computing Practices)
      • 28(7) pp. 367-372, July 2022
    • 소프트웨어 예외 처리를 이용한 페이지 단위 메모리 추적 방법
      • (English title) Page Level Memory Tracing Scheme using Software Exception Handling
      • 황인휘, 김화정, 이정은, 이인선, 염헌영, 박지웅
      • 정보과학회 컴퓨팅의 실제 논문지 (KIISE Transactions on Computing Practices)
      • 28(1) pp. 9-16, Jan. 2022

[2020]

    • 고성능 컴퓨팅 시스템에서의 RocksDB 병렬성 증대를 위한 최적의 자원 할당 기법
      • (English title) An Optimal Resource Allocation Scheme for Increasing RocksDB Parallelism on High-Performance Computing Systems
      • 김화정, 염헌영, 손용석
      • 정보과학회 컴퓨팅의 실제 논문지 (KIISE Transactions on Computing Practices)
      • 26(3) pp. 144-149, Mar. 2022

[2019]

    • 키밸류 스토어의 파일 I/O 특성을 고려한 다중 저장장치로의 효율적 파일 배치 기법
      • (English title) An Efficient File Distribution Scheme for Multiple Storage Devices based on I/O Characteristics of the Key-Value Store
      • 김화정, 염헌영, 손용석
      • 정보과학회 컴퓨팅의 실제 논문지 (KIISE Transactions on Computing Practices)
      • 25(9) pp. 453-458, Sep. 2022

Domestic Conferences (Republic of Korea, in Korean)

[2023]

    • Small zone ZNS를 활용한 RocksDB 컴팩션 최적화
      • (English title) RocksDB Compaction Optimization by leveraging small zone ZNS
      • 신희원, 염헌영, 김화정*
      • 한국정보과학회 학술발표논문집 (In Proceedings of Korea Computer Congress), pp. 13-15, Jun. 2023 (*Corresponding Author)

[2021]

    • 버켓 간 슬롯 공유를 통한 쿠쿠 필터(Cuckoo Filter) 공간 효율화
      • (English title) Space Efficient Cuckoo filter through Slot sharing
      • 이광진, 김화정, 염헌영
      • 한국정보과학회 학술발표논문집 (In Proceedings of Korea Computer Congress), pp. 4-6, Jun. 2021
      • Best Presentation Awards
    • 효율적인 메모리 사용 분석을 위한 페이지 단위 메모리 트레이싱
      • (English title) Page-Level Memory Tracing for Efficient Memory Usage Analysis
      • 황인휘, 이정은, 김화정, 염헌영
      • 한국정보과학회 학술발표논문집 (In Proceedings of Korea Computer Congress), pp. 25-27, Jun. 2021
      • Best Presentation Awards

[2020]

    • 파이프라이닝을 통한 효율적 데이터 무결성 검증
      • (English title) An Efficient Data Integrity Verification through Pipelining
      • 김화정, 염헌영
      • 한국정보과학회 학술발표논문집 (In Proceedings of Korea Computer Congress), pp. 12-14, Jul. 2020

[2019]

    • 고성능 컴퓨팅 시스템에서의 RocksDB의 병렬성에 따른 성능 평가
      • (English title) Performance Evaluation of RocksDB Parallelism on High-Performance Computing system
      • 김화정, 김성곤, 염헌영, 손용석
      • 한국정보과학회 학술발표논문집 (In Proceedings of Korea Computer Congress), pp. 56-58, Jun. 2019
      • Best Presentation Awards
    • AutoML의 Hyperparameter 최적화 유용성 검증
      • (English title) Verification of AutoML usability in Optimizing Hyperparameters
      • 최윤서, 김화정, 염헌영
      • 한국정보과학회 학술발표논문집 (In Proceedings of Korea Computer Congress), pp. 1050-1052, Jun. 2019
    • 고성능 SSD를 위한 MyRocks I/O 패턴 분석 및 최적화 기법 설계
      • (English title) Designing MyRocks based on I/O Patterns for High Performance SSD
      • 명기현, 김화정, 염헌영
      • 한국정보과학회 학술발표논문집 (In Proceedings of Korea Computer Congress), pp. 59-61, Jun. 2019

[2018]

    • 읽기와 쓰기 연산 분리를 통한 RocksDB 최적화
      • (English title) Optimization of RocksDB through I/O Separation
      • 김화정, 염헌영, 손용석
      • 한국정보과학회 학술발표논문집 (In Proceedings of Korea Software Congress), pp. 10-12, Dec. 2018
      • Best Presentation Awards
    • 소형 파일 처리 성능 향상을 위한 파일 저장 기법
      • (English title) File Structuring Method for Efficient Small File I/O Performance
      • 김화정, 염헌영
      • 한국정보과학회 학술발표논문집 (In Proceedings of Korea Computer Congress), pp. 25-27, Jun. 2018

[2017]

    • 네트워크 환경에서 대규모 파일의 효율적 전송을 위한 프로토콜 및 최적화 기법
      • (English title) Protocol and Optimization Mechanism for Transferring Many Files in a Network Environment
      • 김화정, 염헌영
      • 한국정보과학회 학술발표논문집 (In Proceedings of Korea Software Congress), pp. 1530-1532, Dec. 2017

[2016]

    • Home 환경에서 사용자의 상황 파악을 위한 IoT 로그 수집 시스템
      • (English title) IoT Log Collecting System for Understanding User Context at Home
      • 김화정, 염헌영
      • 한국정보과학회 학술발표논문집 (In Proceedings of Korea Computer Congress), pp. 574-576, Jun. 2016

[2008]

    • ISO 기반의 파일에서 동적으로 생성되는 메타데이터를 파일과 분리하여 저장하는 알고리즘 구현
      • (English title) Implementation that Store Separating Metadata Created Dynamically of ISO based File Format
      • 서주희, 김화정
      • 대한전자공학회 학술대회 (In Proceedings of Autumn Annual Conference of IEIE), pp. 941-942, Nov. 2008

Patents