Research Projects


  1. MSRA, "Search and Analysis in Databases," 2012. 6 - 2013. 6 (principal investigator)
  2. MSRA, "An Index Generation Model for Top-k Spatial Keyword Queries," 2011. 6 - 2012. 6 (principal investigator)
  3. MSRA, "Real-World Scale Computing," KAIST-Microsoft Collaboration Center 2009. 3 - 2011. 3 (principal investigator)
  4. MSRA, "Answering Top-k Queries in Arbitrary Subspaces by Combining the Layer-Based Approach and the List-Based Approach," 2009. 2 - 2010. 2 (principal investigator)
  5. MSRA, "Answering Top-k Queries Using a Partitioned Layer Index," 2008.2 - 2009.2 (principal investigator).
  6. Korea Science and Engineering Foundation(KOSEF), "Ubiquitous Database Engines," National Research Laboratory(NRL), 2007.7 - 2015.6 (principal investigator).
  7. Advanced Information Technology Research Center(AITrc) -- an Engineering Research Center(ERC) of Excellence Supported by Korea Science and Engineering Foundation (Director), 1999. 7 - 2008. 2.
  8. Distributed Multi-DBMSs(ODYSSEUS), AITrc, 1999.7 - 2008.2 (principal investigator)
  9. NaverCom, "Engineering of Odysseus/COSMOS-IR/S for the Web Search Engine VI," 1999. 12 - 2000. 8 (principal investigator).
  10. Samsung SDS, "Engineering of COSMOS-IR/S for the Web Search Engine IV," 1999. 4 - 2002. 5 (principal investigator).
  11. Samsung SDS, "Engineering of COSMOS-IR/S for the Web Search Engine V," 1999. 4 - 2002.3 (principal investigator).
  12. Ministry of Science and Technology, "Development of Web-DBMS Integration Technology for a Web-Based OODBMS Supporting Information Retrieval," 1998. 10 - 1999. 9 (principal investigator).
  13. Korea Science and Engineering Foundation(KOSEF), Development of a Hypermedia System Tightly Coupled with a DBMS and Development of a Digital Library Search Engine, 1998.10 - 1999.9 (principal investigator).
  14. Ministry of Science and Technology, "Technology Development Planning for Fundamental and Applied S/W Technologies for Ministry of Science and Technology," 1998. 9 - 1999. 3 (principal investigator).
  15. OCI Information Communication, "A Study on a Main Memory Database Storage System Supporting Crash Recovery Facilities," 1998. 3. 1 - 1999. 12. 31 (principal investigator).
  16. Korea Science and Engineering Foundation(KOSEF), "Multimedia Information Server Software Platform Development," 1995. 3. 1 - 1999. 2. 28 (principal investigator).
  17. Korea Research Foundation, "Efficient k-Nearest Neighbor and Sequence Search Algorithms and Improvement of a Multidimensional Index Structure's Storage Utilization in High-dimensional Environments for Multimedia Content-Based Retrieval," 1998. 1. 1 - 1999. 12. 31 (principal investigator).
  18. Ministry of Science and Technology, "Advanced Science and Technology Digital Library," 1997. 12 - 2001.11 (co-investigator).
  19. Samsung SDS, "Engineering of COSMOS-IR/S for the Web Search Engine III," 1997. 11 - 1999.4 (principal investigator).
  20. Samsung SDS, "Engineering of COSMOS-IR/S for the Web Search Engine II," 1997. 11 - 1999.4 (principal investigator).
  21. Korea Science and Engineering Foundation(KOSEF), "Development of a Hypermedia Incorporated with a DBMS and Development of a Digital Library Engine," 1997. 10. 3 - 1998. 9. 30 (principal investigator).
  22. Samsung SDS, "Engineering of COSMOS-IR/S for the Web Search Engine," 1997.5 - 2001.4 (principal investigator).
  23. Korea Telecom, "Development of a Spatial Database Engine Supporting the Extended SQL Spatial Query Language," 1997. 4. 28 - 1997. 12. 20 (co-investigator).
  24. Korea Science and Engineering Foundation(KOSEF), "Multimedia Content-based Information Retrival," 1997. 3. 1 - 1998. 2. 28 (principal investigator).
  25. KAIST, "Odysseus/Geo: An Object Oriented DBMS for Geographical Information Systems," 1997. 3. 1 - 1998. 2. 28 (principal investigator)
  26. STEPI, SKC&C, Ssang Yong Information Communications, Samsung SDS, "Development of a Spatial Object Storage System," 1996. 12. 1 - 1998. 11. 30 (principal investigator)
  27. SK Telecom, "Basic Study on Performance Enhancement of the HLR Database System for Mobile Communication," 1996. 10. 8 - 1997. 10. 7 (principal investigator).
  28. Korea Telecom, "Development of a General-Purpose Multiuser Object-Storage System with Efficient Support for Variable-Length Attributes (II)," 1996. 5 - 1997. 12 (principal investigator).
  29. Samsung Group, "Fundamental Research on Multimedia Engines," 1996 - 2000 (principal investigator).
  30. KAIST, "An Object Manager Supporting Multiple Language Bindings," 1996. 3 - 1997. 2 (principal investigator).
  31. Ministry of Science and Technology, "Development of a Spatial Object Storage System," 1995. 12. 1 - 1998. 11. 30 (principal investigator).
  32. Hyundai Electronics Co., "Development of a Main Memory Database Storage System with Efficient Supporting for Mobile Communications and Real-Time Applications," 1995. 11. 1 - 1997. 10. 31 (principal investigator).
  33. Seodu Logic, Inc., "Version Management System for the CAD Database," 1995. 7. 12 - 1996. 2. 11 (principal investigator).
  34. KAIST, "A Concurrency Control Manager for Multiuser Data Storage System," 1995. 3 - 1996. 2 (principal investigator).
  35. Korea Telecom, "Development of a GIS Engine for Large Spatial Databases," 1994. 4 - 1996. 12 (co-investigator).
  36. KAIST, "A Storage System Supporting New Database Applications," 1994. 3 - 1995. 2 (principal investigator).
  37. Ministry of Communications, "Organization and Administration of the Subcommittee of Telecommunications Advancement Council for Promoting Database Industry," 1993. 8 - 1994. 5 (principal investigator).
  38. Korea Telecom, "Development of a General-Purpose Multiuser Object-Storage System with Efficient Support for Variable-Length Attributes," 1993. 4 - 1995. 12 (principal investigator).
  39. KOSEF/Center for Artificial Intelligence Research, "Development of a Multimedia Information System Platform," 1993. 3 - 1995. 2 (principal investigator).
  40. Electronics and Telecommunications Research Institute, "Development of a Multimedia Programming Environment," 1993. 2 - 1993. 7 (principal investigator).
  41. Korea Computer Communications Co., "Development of a Multi-User Object-Oriented Database System on UNIX," 1993. 2 - 1995. 7 (principal investigator).
  42. KAIST, "A Multimedia Electronic Mailing System Based on the MHEG Specification," 1993. 3 - 1994. 2 (principal investigator).
  43. Ministry of Trade, Industry, and Energy, "Development of a New Indexing Technique for a Korean Electronic Dictionary in the Information Retrieval Engine for Unformatted Documents," 1992. 7 - 1994. 6 (co-investigator).
  44. Ministry of Science and Technology, "An Intelligent Multimedia Information System Platform and Image Signal Transmission on High Speed Networks," 1992. 7 - 1995. 5 (principal investigator).
  45. Agency for Defence Development, "Concurrency Control in Distributed Database Systems," 1992. 5 - 1993. 4 (principal investigator).
  46. Interuniversity Semiconductor Research Center, "A CAD Engineering Database System," 1992. 4 - 1994. 3 (principal investigator).
  47. Center for Artificial Intelligence Research, "Multimedia Information Systems," 1992. 3. - 1993. 2 (principal investigator).
  48. KAIST, "Design and Implementation of an Object-Oriented Storage Manager," 1992. 3 - 1993. 2 (principal investigator).
  49. Korea High-Speed Rail Construction Authority, "Optimal Design of an Integrated Network for the Seoul-Busan High-Speed Railway," 1992. 6 - 1992. 12 (co-investigator).
  50. Korea Telecommunications, "Multimedia Communications Technology," 1991. 7 - 1992. 12 (co-investigator).
  51. Ministry of Science and Technology, "Graphical Database Query Languages," 1991. 8 - 1992. 8 (principal investigator).
  52. Korea Science and Engineering Foundation(KOSEF), " Implementation and Application of the Multilevel Grid File," 1991. 3 - 1993. 2 (principal investigator).
  53. KAIST, "Selectivity Estimation Using a Multidimensional Dynamic File Structure," 1991. 3 - 1992. 2 (principal investigator).
  54. National Computerization Agency, "Guidelines for Using Database Systems in the National Computer Network," 1990. 2 - 1990. 12 (co-investigator).
  55. Korea Communications Society, "A Next-Generation Multimedia Terminal for Broadband Computer Networks," 1990. 2 - 1991. 3 (co-investigator).
  56. Electronics and Telecommunications Research Institute, "Multimedia Handling and Storage," 1990. 10 - 1992. 7 (principal investigator).
  57. KAIST, "Multilevel Grid File for Spatial Object Management," 1990. 3 - 1991. 2 (principal investigator).

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