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)
MSRA, "Answering Top-k Queries Using a Partitioned Layer Index,"
2008.2 - 2009.2 (principal investigator).
NaverCom, "Engineering of Odysseus/COSMOS-IR/S for the Web Search Engine VI,"
1999. 12 - 2000. 8 (principal investigator).
Samsung SDS, "Engineering of COSMOS-IR/S for the Web Search Engine IV,"
1999. 4 - 2002. 5 (principal investigator).
Samsung SDS, "Engineering of COSMOS-IR/S for the Web Search Engine V,"
1999. 4 - 2002.3 (principal investigator).
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).
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).
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).
OCI Information Communication, "A Study on a Main Memory Database Storage
System Supporting Crash Recovery FaciLIties," 1998. 3. 1 - 1999. 12. 31
(principal investigator).
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).
Ministry of Science and Technology, "Advanced Science and Technology Digital
Library," 1997. 12 - 2001.11 (co-investigator).
Samsung SDS, "Engineering of COSMOS-IR/S for the Web Search Engine III,"
1997. 11 - 1999.4 (principal investigator).
Samsung SDS, "Engineering of COSMOS-IR/S for the Web Search Engine II,"
1997. 11 - 1999.4 (principal investigator).
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).
Samsung SDS, "Engineering of COSMOS-IR/S for the Web Search Engine,"
1997.5 - 2001.4 (principal investigator).
Korea Telecom, "Development of a Spatial Database Engine Supporting the
Extended SQL Spatial Query Language," 1997. 4. 28 - 1997. 12. 20
(co-investigator).
KAIST, "Odysseus/Geo: An Object Oriented
DBMS for Geographical Information Systems," 1997. 3. 1 - 1998. 2. 28
(principal investigator)
STEPI, SKC&C, Ssang Yong Information Communications, Samsung SDS, "Development
of a Spatial Object Storage System," 1996. 12. 1 - 1998. 11. 30 (principal
investigator)
SK Telecom, "Basic Study on Performance Enhancement of the HLR Database
System for Mobile Communication," 1996. 10. 8 - 1997. 10. 7 (principal
investigator).
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).
Samsung Group, "Fundamental Research on Multimedia Engines," 1996 - 2000
(principal investigator).
Ministry of Science and Technology, "Development of a Spatial Object Storage
System," 1995. 12. 1 - 1998. 11. 30 (principal investigator).
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).
Seodu Logic, Inc., "Version Management System for the CAD Database," 1995.
7. 12 - 1996. 2. 11 (principal investigator).
KAIST, "A Concurrency Control Manager
for Multiuser Data Storage System," 1995. 3 - 1996. 2 (principal
investigator).
Korea Telecom, "Development of a GIS Engine for Large Spatial Databases,"
1994. 4 - 1996. 12 (co-investigator).
KAIST, "A Storage System Supporting New
Database AppLIcations," 1994. 3 - 1995. 2 (principal investigator).
Ministry of Communications, "Organization and Administration of the
Subcommittee of Telecommunications Advancement Council for Promoting
Database Industry," 1993. 8 - 1994. 5 (principal investigator).
Korea Telecom, "Development of a General-Purpose Multiuser Object-Storage
System with Efficient Support for Variable-Length Attributes," 1993. 4
- 1995. 12 (principal investigator).
KOSEF/Center for Artificial IntelLIgence Research, "Development of a Multimedia
Information System Platform," 1993. 3 - 1995. 2 (principal investigator).
Electronics and Telecommunications Research Institute, "Development of
a Multimedia Programming Environment," 1993. 2 - 1993. 7 (principal investigator).
Korea Computer Communications Co., "Development of a Multi-User Object-Oriented
Database System on UNIX," 1993. 2 - 1995. 7 (principal investigator).
KAIST, "A Multimedia Electronic MaiLIng System Based on the MHEG Specification,"
1993. 3 - 1994. 2 (principal investigator).
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).
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).
Agency for Defence Development, "Concurrency Control in Distributed Database
Systems," 1992. 5 - 1993. 4 (principal investigator).
Interuniversity Semiconductor Research Center, "A CAD Engineering Database
System," 1992. 4 - 1994. 3 (principal investigator).
Center for Artificial IntelLIgence Research, "Multimedia Information Systems,"
1992. 3. - 1993. 2 (principal investigator).
KAIST, "Design and Implementation of an Object-Oriented Storage Manager,"
1992. 3 - 1993. 2 (principal investigator).
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).
Ministry of Science and Technology, "Graphical Database Query Languages,"
1991. 8 - 1992. 8 (principal investigator).
Korea Science and Engineering Foundation(KOSEF), " Implementation and AppLIcation
of the Multilevel Grid File," 1991. 3 - 1993. 2 (principal investigator).
KAIST, "Selectivity Estimation Using a Multidimensional Dynamic File Structure,"
1991. 3 - 1992. 2 (principal investigator).
National Computerization Agency, "GuideLInes for Using Database Systems
in the National Computer Network," 1990. 2 - 1990. 12 (co-investigator).
Korea Communications Society, "A Next-Generation Multimedia Terminal for
Broadband Computer Networks," 1990. 2 - 1991. 3 (co-investigator).
Electronics and Telecommunications Research Institute, "Multimedia HandLIng
and Storage," 1990. 10 - 1992. 7 (principal investigator).