Homepage of Yoshiharu Ishikawa

Continual and Adaptive Neighborhood Information Retrieval for Moving Objects (2000 − 2004)

• Research Area: spatio-temporal databases
• Selected Publications
1. Yoshiharu Ishikawa, Hiroyuki Kitagawa, and Tooru Kawashima, "Continual Neighborhood Tracking for Moving Objects Using Adaptive Distances", Proc. International Database Engineering and Application Symposium (IDEAS'02), Edmonton, Canada, pp. 54-63, Jul. 2002.
2. Yoshiharu Ishikawa, Yuichi Tsukamoto, and Hiroyuki Kitagawa, "Implementation and Evaluation of an Adaptive Neighborhood Information Retrieval System for Mobile Users", Proc. 3rd International Workshop on Web and Wireless Geographic Information Systems (W²GIS), Roma, Italy, pp. 25-33, December 2003.

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Query Processing for XML Databases / XML View Management (2002 − 2004)

• Research Area: XML databases
• Selected Publications
1. Yoshiharu Ishikawa, Takaaki Nagai, and Hiroyuki Kitagawa, "Transforming XPath Queries for Bottom-Up Query Processing", Proceedings of the IASTED Interanational Conference on Information Systems and Databases (ISDB 2002), pp. 210-215, Tokyo, Japan, September 2002.
2. Yoshiharu Ishikawa, Jun Kawada, and Hiroyuki Kitagawa, "Processing XML View Queries Including User-defined Foreign Functions on Relational Databases", Proceedings of the 3rd International Conference on Web Information Systems Engineering (WISE 2002), pp. 225-236, Singapore, IEEE Computer Society Press, December 2002.

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Constraint-based Integration of Spatial Information Sources (2000 − 2001)

• Research Area: spatio-temporal databases, integration of distributed heterogeneous information
• Selected Publications
1. Yoshiharu Ishikawa and Hiroyuki Kitagawa, "Source Description-Based Approach for the Modeling of Spatial Information Integration", Proceedings of the 20th International Conference on Conceptual Modeling (ER 2001), Vol. 2224 of Lecture Notes in Computer Science, pp. 41-55, Yokohama, Japan, Springer-Verlag, November 2001.

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Relevance Feedback in Multimedia Databases (1997 − 1998)

• Research Area: multimedia databases
• Selected Publications
1. Yoshiharu Ishikawa, Ravishankar Subramanya, and Christos Faloutsos, "MindReader: Querying Databases through Multiple Examples", Proceedings of the 24th International Conference on Very Large Data Bases (VLDB '98), pp. 218-227, New York City, New York, Morgan Kaufmann, August 1998.

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Wrapping Method for Structured Document Information Sources (1996 − 1997)

• Research Area: integration of distributed and heterogeneous information, structured documents
• Selected Publications
1. Yoshiharu Ishikawa, Takehiro Furudate, and Shunsuke Uemura, "A Wrapping Architecture for IR Systems to Mediate External Structured Document Sources", Proceedings of the Fifth International Conference on Database Systems for Advanced Applications (DASFAA '97), pp. 431-440, Melbourne, Australia, World Scientific, April 1997.

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Indexing Object Databases Using Signature Files / Set Retrieval Using Signature Files (1992 − 1996)

• Resarch Area: object databases, indexing
• Selected Publications
1. Yoshiharu Ishikawa, Hiroyuki Kitagawa, and Nobuo Ohbo, "Evaluation of Signature Files as Set Access Facilities in OODBs", Proceedings of the 1993 ACM SIGMOD International Conference on Management of Data (SIGMOD '93), pp. 247-256, Washington, D.C., May 1993.
2. Hiroyuki Kitagawa, Yoshiaki Fukushima, Yoshiharu Ishikawa, and Nobuo Ohbo, "Estimation of False Drops in Set-valued Objects Retrieval with Signature Files", Proceedings of the Fourth International Conference on Foundations of Data Organization and Algorithms (FODO '93), pp. 146-163, Chicago, Illinois, October 1993.
3. Yoshiharu Ishikawa and Hiroyuki Kitagawa, "Analysis of Indexing Schemes to Support Set Retrieval of Nested Objects", Proceedings of the International Symposium on Advanced Database Technologies and Their Integration (ADTI '94), pp. 55-62, Nara, Japan, October 1994.
4. Yoshiharu Ishikawa and Hiroyuki Kitagawa, "Design and Performance Analysis of Indexing Schemes for Set Retrieval of Nested Objects", IEICE Transactions on Information and Systems, Vol. E78-D, No. 11, pp. 1424-1432, Nov. 1995.
5. Hiroyuki Kitagawa, Noriyasu Watanabe, and Yoshiharu Ishikawa, "Design and Evaluation of Signature File Organization Incorporating Vertical and Horizontal Decomposition Schemes", Proceedings of the Seventh International Conference on Database and Expert Systems Applications (DEXA'96), pp. 875-888, Zurich, Switzerland, September 1996.