339 search results - page 6 / 68 » Improved Query Performance with Variant Indexes |
SIGMOD
2002
ACM
15 years 10 months ago
2002
ACM
The emergence of the Web has increased interests in XML data. XML query languages such as XQuery and XPath use label paths to traverse the irregularly structured data. Without a s...
CORIA
2006
14 years 11 months ago
2006
In order to resolve multi-dimentional queries, we propose a conceptual indexing based on a medical meta thesaurus (UMLS). We study the impact of this indexing compared to a words-b...
GIS
1999
ACM
15 years 2 months ago
1999
ACM
Spatial indexes, such as the PMR quadtree, are important in spatial databases for efficient execution of queries involving spatial constraints, especially when the queries involv...
187
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ICDE
2009
IEEE
15 years 11 months ago
2009
IEEE
Abstract-- Answering approximate queries on string collections is important in applications such as data cleaning, query relaxation, and spell checking, where inconsistencies and e...
164
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ICDE
2007
IEEE
15 years 11 months ago
2007
IEEE
Traditional approaches for efficiently processing historical queries, where a history is a multidimensional timeseries, employ a two step filter-and-refine scheme. In the filter s...