• 1174 Citations
  • 17 h-Index
1987 …2014
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Research Output 1987 2014

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
Continuous queries
Knowledge engineering
2011

A continuous query evaluation scheme for a detection-only query over data streams

Park, H. K. & Lee, W. S., 2011 Dec 13, CIKM'11 - Proceedings of the 2011 ACM International Conference on Information and Knowledge Management. p. 2405-2408 4 p. (International Conference on Information and Knowledge Management, Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Evaluation
Data streams
Continuous queries
Query
Join

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

I-SEE: Integrated stream execution environment over on-line data streams

Shin, S. J., Park, H. K., Woo, H. J. & Lee, W. S., 2010 Dec 1, CIKM'10 - Proceedings of the 19th International Conference on Information and Knowledge Management and Co-located Workshops. p. 1959-1960 2 p. (International Conference on Information and Knowledge Management, Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Data streams
Integrated
Monitoring
Prototype
Online analytical processing
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
3 Citations (Scopus)

DS-cuber: An integrated OLAP environment for data streams

Woo, H. J., Shin, S. J., Yang, W. S. & Lee, W. S., 2009 Dec 1, ACM 18th International Conference on Information and Knowledge Management, CIKM 2009. p. 2067-2068 2 p. (International Conference on Information and Knowledge Management, Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Data streams
Integrated
Online analytical processing
Navigation
Traffic flow
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
1 Citation (Scopus)

M-COPE: A multiple continuous query processing engine

Park, H. K., Shin, S. J., Na, S. H. & Lee, W. S., 2009 Dec 1, ACM 18th International Conference on Information and Knowledge Management, CIKM 2009. p. 2065-2066 2 p. (International Conference on Information and Knowledge Management, Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Continuous queries
Query processing
Data streams
Query
Evaluation

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
3 Citations (Scopus)

A coarse-grain grid-based subspace clustering method for online multi-dimensional data streams

Lee, J. W. & Lee, W. S., 2008 Dec 1, Proceedings of the 17th ACM Conference on Information and Knowledge Management, CIKM'08. p. 1521-1522 2 p. (International Conference on Information and Knowledge Management, Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Data streams
Grid
Clustering
Siblings
Statistics
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
3 Citations (Scopus)

Anomaly detection over clustering multi-dimensional transactional audit streams

Nam, H. P. & Won, S. L., 2008 Sep 26, Proceedings - 1st IEEE International Workshop on Semantic Computing and Applications, IWSCA 2008. p. 78-80 3 p. 4573154. (Proceedings - 1st IEEE International Workshop on Semantic Computing and Applications, IWSCA 2008).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Data mining
Statistics
Experiments

A spot-matching framework for improving matching accuracy in protein 2-DE gel image analysis

Shim, J. E., Jin, Y. & Lee, W. S., 2008 Dec 1, Proceedings of IDEAS'08: International Database Engineering and Applications Symposium. p. 285-289 5 p. (ACM International Conference Proceeding Series; vol. 299).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image analysis
Gels
Proteins
Electrophoresis
Liver
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
1 Citation (Scopus)

Memory efficient subspace clustering for online data streams

Park, N. H. & Lee, W. S., 2008 Dec 1, Proceedings of IDEAS'08: International Database Engineering and Applications Symposium. p. 199-208 10 p. (ACM International Conference Proceeding Series; vol. 299).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Data storage equipment
Clustering algorithms
Scheduling
Statistics
Experiments
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

Anomaly intrusion detection based on dynamic cluster updating

Oh, S. H. & Lee, W. S., 2007 Dec 1, Advances in Knowledge Discovery and Data Mining - 11th Pacific-Asia Conference, PAKDD 2007, Proceedings. p. 737-744 8 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 4426 LNAI).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Anomaly Detection
Intrusion detection
Intrusion Detection
Updating
Clustering algorithms
6 Citations (Scopus)

An on-line interactive method for finding association rules data streams

Shin, S. J. & Lee, W. S., 2007 Dec 1, CIKM 2007 - Proceedings of the 16th ACM Conference on Information and Knowledge Management. p. 963-966 4 p. (International Conference on Information and Knowledge Management, Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Data streams
Interactive methods
Association rules
Experiment

Approximate trace of grid-based clusters over high dimensional data streams

Park, N. H. & Lee, W. S., 2007 Dec 1, Advances in Knowledge Discovery and Data Mining - 11th Pacific-Asia Conference, PAKDD 2007, Proceedings. p. 753-760 8 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 4426 LNAI).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

High-dimensional Data
Data Streams
Trace
Grid
Clustering Methods
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
15 Citations (Scopus)

estMax: Tracing maximal frequent itemsets over online data streams

Woo, H. J. & Lee, W. S., 2007 Dec 1, Proceedings of the 7th IEEE International Conference on Data Mining, ICDM 2007. p. 709-714 6 p. 4470315. (Proceedings - IEEE International Conference on Data Mining, ICDM).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Processing
Experiments
19 Citations (Scopus)

Grid-based subspace clustering over data streams

Park, N. H. & Lee, W. S., 2007 Dec 1, CIKM 2007 - Proceedings of the 16th ACM Conference on Information and Knowledge Management. p. 801-810 10 p. (International Conference on Information and Knowledge Management, Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Data streams
Siblings
Grid
Clustering
Node

Query optimization for web BBS by analytic function and function-based index in oracle DBMS

Lee, H. & Lee, W. S., 2007 Dec 1, Proceedings - ALPIT 2007 6th International Conference on Advanced Language Processing and Web Information Technology. p. 606-611 6 p. 4460710. (Proceedings - ALPIT 2007 6th International Conference on Advanced Language Processing and Web Information Technology).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Bulletin boards

Runtime-efficient approach for multiple continuous filtering in XML message brokers

Lee, H. & Lee, W., 2007 Dec 1, SOFSEM 2007: Theory and Practice of Computer Science - 33rd Conference on Current Trends in Theory and Practice of Computer Science, Proceedings. p. 738-749 12 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 4362 LNCS).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

XML
XPath
Filtering
Comparison of Experiments
Query
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

Anomaly intrusion detection based on clustering a data stream

Oh, S. H., Kang, J. S., Byun, Y. C., Jeong, T. T. & Lee, W. S., 2006 Jan 1, Information Security - 9th International Conference, ISC 2006, Proceedings. Springer Verlag, p. 415-426 12 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 4176 LNCS).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Anomaly Detection
Intrusion detection
Intrusion Detection
Data Streams
Audit
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
28 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
1 Citation (Scopus)

An incremental document clustering for the large document database

Joo, K. H. & Lee, W. S., 2005 Dec 1, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). p. 374-387 14 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 3689 LNCS).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Document Clustering
Clustering algorithms
Internet
Clustering Algorithm
Incremental Algorithm
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