7607 search results - page 84 / 1522 » Querying data provenance |
APWEB
2004
Springer
15 years 5 months ago
2004
Springer
In a state-of-the-art XML database, an XML query is evaluated as a sequence of structural joins in which positions of data nodes are used to perform each individual structural joi...
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DBISP2P
2003
Springer
15 years 5 months ago
2003
Springer
Databases have employed a schema-based approach to store and retrieve structured data for decades. For peer-to-peer (P2P) networks, similar approaches are just beginning to emerge,...
SIGMOD
2001
ACM
16 years 1 days ago
2001
ACM
We introduce a rich language of descriptions for semistructured tree-like data, and we explain how such descriptions relate to the data they describe. Various query languages and ...
CIKM
2009
Springer
15 years 6 months ago
2009
Springer
Relevance Feedback has proven very effective for improving retrieval accuracy. A difficult yet important problem in all relevance feedback methods is how to optimally balance the...
ICDCSW
2006
IEEE
15 years 6 months ago
2006
IEEE
— Existing searching schemes in unstructured P2Ps can be categorized as either blind or informed. The quality of query results in blind schemes is low. Informed schemes use simpl...