Paz Biber, Ehud Gudes



Local bisimilarity has been proposed as an approximate structural summary for XML and other semi-structured databases. Approximate structural summary, such as A(k)-Index and D(k)-Index, reduce the index's size (and therefore reduce query evaluation time) by compromising on the long path queries. We introduce the A(k)-Simplified and the A(k)-Relevant, approximate structural summaries for graph documents in general, and for XML in particular. Like A(k)-Index and D(k)-Index, our indexes are based on local bisimilarity, however, unlike the previous indexes, they support the removal of non-relevant nodes. We also describe a way to eliminate false drops that might occur due to nodes removal. Our experiments shows that A(k)-Simplified and A(k)-Relevant are much smaller then A(k)-Index, and give accurate results with better performance, for short relevant path queries.


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Paper Citation

in Harvard Style

Biber P. and Gudes E. (2005). USING RELEVANT SETS FOR OPTIMIZING XML INDEXES . In Proceedings of the First International Conference on Web Information Systems and Technologies - Volume 1: WEBIST, ISBN 972-8865-20-1, pages 13-23. DOI: 10.5220/0001229400130023

in Bibtex Style

author={Paz Biber and Ehud Gudes},
booktitle={Proceedings of the First International Conference on Web Information Systems and Technologies - Volume 1: WEBIST,},

in EndNote Style

JO - Proceedings of the First International Conference on Web Information Systems and Technologies - Volume 1: WEBIST,
SN - 972-8865-20-1
AU - Biber P.
AU - Gudes E.
PY - 2005
SP - 13
EP - 23
DO - 10.5220/0001229400130023