• 1173 Citations
  • 17 h-Index
1987 …2014
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Research Output 1987 2014

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Article
2014
1 Citation (Scopus)

Adaptive run-time overhead adjustments for optimizing multiple continuous query processing

Lee, H. H., Park, H. K., Park, J. C., Lee, W. S. & Joo, K. H., 2014 Jan 1, In : International Journal of Software Engineering and its Applications. 8, 11, p. 183-196 14 p.

Research output: Contribution to journalArticle

Query processing
Costs
Monitoring
Time delay

A data stream cube for OLAP systems

Woo, H. J., Park, N. H., Yang, W. S. & Lee, W. S., 2014 Jan 1, In : Information (Japan). 17, 5, p. 1749-1754 6 p.

Research output: Contribution to journalArticle

Data storage equipment
Data warehouses
Monitoring
Sensors
Processing

Big data case study: A web-log based framework for analyzing the use-quality of a website

Lee, H. H., Park, J. C., Lee, J. M., Park, N. H. & Lee, W. S., 2014 Jan 1, In : Life Science Journal. 11, 7, p. 588-596 9 p., 81.

Research output: Contribution to journalArticle

Websites
World Wide Web
Workflow
Metadata
Standardization
19 Citations (Scopus)

CP-tree: An adaptive synopsis structure for compressing frequent itemsets over online data streams

Shin, S. J., Lee, D. S. & Lee, W. S., 2014 Sep 10, In : Information sciences. 278, p. 559-576 18 p.

Research output: Contribution to journalArticle

Frequent Itemsets
Prefix
Data Streams
Data storage equipment
Merging
2 Citations (Scopus)

Interactive discovery of association rules over data streams

Shin, S. J. & Lee, W. S., 2014 Sep 1, In : Computer Systems Science and Engineering. 29, 5, p. 341-352 12 p.

Research output: Contribution to journalArticle

Association rules
Association Rules
Data Streams
Frequent Itemsets
Prefix
2013

SUBic: A scalable unsupervised framework for discovering high quality biclusters

Lee, J., Jin, Y. & Lee, W. S., 2013 Jul 1, In : Journal of Computer Science and Technology. 28, 4, p. 636-646 11 p.

Research output: Contribution to journalArticle

Biclustering
Attribute
Microarrays
Clustering algorithms
Scalability
2012
7 Citations (Scopus)

Adaptive optimization for multiple continuous queries

Park, H. K. & Lee, W. S., 2012 Jan 1, In : Data and Knowledge Engineering. 71, 1, p. 29-46 18 p.

Research output: Contribution to journalArticle

Continuous queries
Data streams
Query processing
Query
Process optimization

Adaptive two-level optimization for selection predicates of multiple continuous queries

Lee, H. H. & Lee, W. S., 2012 Oct 1, In : Journal of Intelligent Information Systems. 39, 2, p. 317-334 18 p.

Research output: Contribution to journalArticle

Macros
Information science
Query processing
Experiments
2011

A probability-based error spot filtering method in protein 2-DE image spot pattern matching analysis

Jin, Y., Shim, J. E. & Lee, W. S., 2011 Nov 1, In : Expert Systems with Applications. 38, 12, p. 14960-14968 9 p.

Research output: Contribution to journalArticle

Pattern matching
Gels
Proteins
Electrophoresis
Liver
2010
24 Citations (Scopus)

Anomaly intrusion detection by clustering transactional audit streams in a host computer

Park, N. H., Oh, S. H. & Lee, W. S., 2010 Jun 15, In : Information sciences. 180, 12, p. 2375-2389 15 p.

Research output: Contribution to journalArticle

Audit
Anomaly Detection
Intrusion detection
Intrusion Detection
Clustering
6 Citations (Scopus)

Consistent collective evaluation of multiple continuous queries for filtering heterogeneous data streams

Lee, H. H. & Lee, W. S., 2010 Feb 1, In : Knowledge and Information Systems. 22, 2, p. 185-210 26 p.

Research output: Contribution to journalArticle

Query processing
XML
Experiments

Exception discovery: A novel method for the identification of differentially expressed proteins

Shim, J. E., Kim, D. B., Lee, W. S., Cho, S. Y. & Yu, E., 2010 Mar 1, In : IEEE Transactions on Information Technology in Biomedicine. 14, 2, p. 473-480 8 p., 4446719.

Research output: Contribution to journalArticle

Proteins
Statistical methods
Gels
Electrophoresis
Proteomics
2009
5 Citations (Scopus)

Adaptive continuous query reoptimization over data streams

Park, H. K. & Lee, W. S., 2009 Jan 1, In : IEICE Transactions on Information and Systems. E92-D, 7, p. 1421-1428 8 p.

Research output: Contribution to journalArticle

Experiments
8 Citations (Scopus)

Efficiently tracing clusters over high-dimensional on-line data streams

Lee, J. W., Park, N. H. & Lee, W. S., 2009 Mar 1, In : Data and Knowledge Engineering. 68, 3, p. 362-379 18 p.

Research output: Contribution to journalArticle

Data streams
Node
Scalability
Statistics
Clustering
20 Citations (Scopus)

EstMax: Tracing maximal frequent item sets instantly over online transactional data streams

Woo, H. J. & Lee, W. S., 2009 Oct 1, In : IEEE Transactions on Knowledge and Data Engineering. 21, 10, p. 1418-1431 14 p., 4711051.

Research output: Contribution to journalArticle

Data mining
Processing
Experiments

On-line analytical framework for the 2-DE based proteome information

Shim, J. E. & Lee, W. S., 2009 May 1, In : Expert Systems with Applications. 36, 4, p. 7528-7534 7 p.

Research output: Contribution to journalArticle

Proteins
Data warehouses
Experiments
5 Citations (Scopus)

Selectivity-sensitive shared evaluation of multiple continuous XPath queries over XML streams

Lee, H. H. & Lee, W. S., 2009 May 30, In : Information sciences. 179, 12, p. 1984-2001 18 p.

Research output: Contribution to journalArticle

XPath
Selectivity
XML
Query processing
Query
2008
1 Citation (Scopus)

Adaptive selection of tuples over data streams for efficient load shedding

Chang, J. H., Park, N. H. & Lee, W. S., 2008 Jul 1, In : Computer Systems Science and Engineering. 23, 4, p. 277-287 11 p.

Research output: Contribution to journalArticle

Data Streams
Processing
Stream Processing
Data storage equipment
Restriction
9 Citations (Scopus)

Attribute-based evaluation of multiple continuous queries for filtering incoming tuples of a data stream

Lee, H. H., Yun, E. W. & Lee, W. S., 2008 Jun 1, In : Information sciences. 178, 11, p. 2416-2432 17 p.

Research output: Contribution to journalArticle

Continuous Queries
Data Streams
Filtering
Attribute
Statistics
3 Citations (Scopus)

On-line generation association rules over data streams

Shin, S. J. & Lee, W. S., 2008 May 1, In : Information and Software Technology. 50, 6, p. 569-578 10 p.

Research output: Contribution to journalArticle

Association rules
Experiments
2007
2 Citations (Scopus)

An adaptive materialization method for globally optimized query evaluation in a hierarchical mediator system

Joo, K. H. & Lee, W. S., 2007 Jan 1, In : Computer Journal. 50, 1, p. 68-80 13 p.

Research output: Contribution to journalArticle

Hierarchical systems
Servers
Costs
23 Citations (Scopus)

Cell trees: An adaptive synopsis structure for clustering multi-dimensional on-line data streams

Park, N. H. & Lee, W. S., 2007 Nov 1, In : Data and Knowledge Engineering. 63, 2, p. 528-549 22 p.

Research output: Contribution to journalArticle

Statistics
Data storage equipment
Experiments
Data streams
Grid
156 Citations (Scopus)

Whole genome analysis for liver metastasis gene signatures in colorectal cancer

Dong, H. K., Jeung, H. C., Chan, H. P., Seung, H. K., Gui, Y. L., Won, S. L., Nam, K. K., Hyun, C. C. & Sun, Y. R., 2007 Nov 1, In : International Journal of Cancer. 121, 9, p. 2005-2012 8 p.

Research output: Contribution to journalArticle

Colorectal Neoplasms
Genome
Neoplasm Metastasis
Liver
Genes
2006
2 Citations (Scopus)

An efficient query evaluation in a mediator based on implementation plan

Joo, K. H. & Lee, W. S., 2006 Apr 6, In : Information sciences. 176, 7, p. 799-819 21 p.

Research output: Contribution to journalArticle

Query Evaluation
Mediator
Process Optimization
Differentiate
Schema
7 Citations (Scopus)

Finding frequent itemsets over online data streams

Chang, J. H. & Lee, W. S., 2006 Jul 1, In : Information and Software Technology. 48, 7, p. 606-618 13 p.

Research output: Contribution to journalArticle

Data mining
Data storage equipment
Processing
Experiments
27 Citations (Scopus)

Finding recently frequent itemsets adaptively over online transactional data streams,

Chang, J. H. & Lee, W. S., 2006 Dec 1, In : Information Systems. 31, 8, p. 849-869 21 p.

Research output: Contribution to journalArticle

Approximation algorithms
Data mining
Steam
Data storage equipment
Processing

High-volume continuous XPath querying in XML message brokers

Lee, H. & Lee, W., 2006 Apr, In : IEICE Transactions on Information and Systems. E89-D, 4, p. 1359-1367 9 p.

Research output: Contribution to journalArticle

XML
Query processing
Processing
Data structures
2005

Adaptive selection of materialized queries in a mediator

Joo, K. H. & Lee, W. S., 2005 Dec 1, In : Parallel Processing Letters. 15, 4, p. 451-458 8 p.

Research output: Contribution to journalArticle

Mediator
Query
Costs
Linear search
Evaluation
1 Citation (Scopus)

A landmark extraction method for protein 2DE gel images based on multi-dimensional clustering

Shim, J. E. & Lee, W. S., 2005 Sep 1, In : Artificial Intelligence in Medicine. 35, 1-2, p. 157-170 14 p.

Research output: Contribution to journalArticle

Cluster Analysis
Gels
Tissue
Proteins
Data Mining
3 Citations (Scopus)

Effect of count estimation in finding frequent itemsets over online transactional data streams

Chang, J. H. & Lee, W. S., 2005 Jan 1, In : Journal of Computer Science and Technology. 20, 1, p. 63-69 7 p.

Research output: Contribution to journalArticle

Frequent Itemsets
Data Streams
Count
Processing
Data storage equipment
27 Citations (Scopus)

Efficient mining method for retrieving sequential patterns over online data streams

Chang, J. H. & Lee, W. S., 2005 Dec 1, In : Journal of Information Science. 31, 5, p. 420-432 13 p.

Research output: Contribution to journalArticle

Data storage equipment
Information science
Data mining
information science
57 Citations (Scopus)

estWin: Online data stream mining of recent frequent itemsets by sliding window method

Chang, J. H. & Lee, W. S., 2005 Dec 1, In : Journal of Information Science. 31, 2, p. 76-90 15 p.

Research output: Contribution to journalArticle

transaction
present
time
2004
7 Citations (Scopus)

A clustering-based anomaly intrusion detector for a host computer

Oh, S. H. & Lee, W. S., 2004 Jan 1, In : IEICE Transactions on Information and Systems. E87-D, 8, p. 2086-2094 9 p.

Research output: Contribution to journalArticle

Clustering algorithms
Detectors

A rank-based selection method of materialized queries for efficient query evaluation in a mediator

Joo, K. H. & Lee, W. S., 2004 Jan 1, In : IEICE Transactions on Information and Systems. E87-D, 7, p. 1850-1858 9 p.

Research output: Contribution to journalArticle

Costs
Computational complexity
Servers
15 Citations (Scopus)

A simple pattern classification method for alcohol-responsive proteins that are differentially expressed in mouse brain

Park, B., Jeong, S. K., Lee, W. S., Je, K. S. & Paik, Y. K., 2004 Nov 1, In : Proteomics. 4, 11, p. 3369-3375 7 p.

Research output: Contribution to journalArticle

Pattern recognition
Brain
Alcohols
Proteins
Gels
109 Citations (Scopus)

A sliding window method for finding recently frequent itemsets over online data streams

Chang, J. H. & Lee, W. S., 2004 Jul 1, In : Journal of Information Science and Engineering. 20, 4, p. 753-762 10 p.

Research output: Contribution to journalArticle

Approximation algorithms
transaction
26 Citations (Scopus)

Decaying obsolete information in finding recent frequent itemsets over data streams

Chang, J. H. & Lee, W. S., 2004 Jan 1, In : IEICE Transactions on Information and Systems. E87-D, 6, p. 1588-1592 5 p.

Research output: Contribution to journalArticle

Approximation algorithms
Steam
Query processing
Semantics
78 Citations (Scopus)

Statistical grid-based clustering over data streams

Park, N. H. & Lee, W. S., 2004 Mar 1, In : SIGMOD Record. 33, 1, p. 32-37 6 p.

Research output: Contribution to journalArticle

Processing
Statistics
Data storage equipment
Experiments
2003
Data Streams
Partitioning
Statistical methods
Statistics
Clustering

CLOCK: Clustering for Common Knowledge Extraction in a Set of Transactions

Oh, S. H. & Lee, W. S., 2003 Jan 1, In : IEICE Transactions on Information and Systems. E86-D, 9, p. 1845-1855 11 p.

Research output: Contribution to journalArticle

2002
30 Citations (Scopus)

An integrated proteome database for two-dimensional electrophoresis data analysis and laboratory information management system

Cho, S. Y., Park, K. S., Shim, J. E., Kwon, M. S., Joo, K. H., Lee, W. S., Chang, J., Kim, H., Chung, H. C., Kim, H. O. & Paik, Y. K., 2002 Sep 1, In : Proteomics. 2, 9, p. 1104-1113 10 p.

Research output: Contribution to journalArticle

Clinical Laboratory Information Systems
Information Management
Proteome
Electrophoresis
Information management
2001

Efficient transmission policies for multimedia objects structured by pre-defined scenarios

Suh, D. R. & Lee, W. S., 2001 Jan 1, In : IEICE Transactions on Information and Systems. E84-D, 3, p. 355-364 10 p.

Research output: Contribution to journalArticle

Scheduling
Specifications
Servers
Display devices
Bandwidth
2000
1 Citation (Scopus)

Parallel evaluation of a deductive query with a breadth-first search strategy

Oh, S. H. & Lee, W. S., 2000 Jan 1, In : Unknown Journal. 22, 2, p. 89-99 11 p.

Research output: Contribution to journalArticle

Search strategy
Query
Evaluation
Intelligent databases
Data base
1998
5 Citations (Scopus)

Video allocation methods in a multi-level server for large-scale VOD services

Jun, S. B. & Lee, W. S., 1998 Dec 1, In : IEEE Transactions on Consumer Electronics. 44, 4, p. 1309-1318 10 p.

Research output: Contribution to journalArticle

Hard disk storage
Servers
Costs
1994
1 Citation (Scopus)
Intelligent databases
1987
1 Citation (Scopus)

Efficient processing of integrity constraints in deductive databases

Sheu, P. C. & Lee, W. S., 1987 Jan 1, In : Future Generation Computer Systems. 3, 3, p. 201-215 15 p.

Research output: Contribution to journalArticle

Processing
Intelligent databases