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VLDB
1999
ACM
89views Database» more  VLDB 1999»
13 years 12 months ago
Physical Data Independence, Constraints, and Optimization with Universal Plans
We present an optimization method and algorithm designed for three objectives: physical data independence, semantic optimization, and generalized tableau minimization. The method ...
Alin Deutsch, Lucian Popa, Val Tannen
CIKM
2011
Springer
12 years 7 months ago
Semantic data markets: a flexible environment for knowledge management
We present Nyaya, a system for the management of Semantic-Web data which couples a general-purpose and extensible storage mechanism with efficient ontology reasoning and querying ...
Roberto De Virgilio, Giorgio Orsi, Letizia Tanca, ...
DASFAA
2005
IEEE
153views Database» more  DASFAA 2005»
14 years 1 months ago
FASST Mining: Discovering Frequently Changing Semantic Structure from Versions of Unordered XML Documents
Abstract. In this paper, we present a FASST mining approach to extract the frequently changing semantic structures (FASSTs), which are a subset of semantic substructures that chang...
Qiankun Zhao, Sourav S. Bhowmick
ESWS
2007
Springer
14 years 1 months ago
A Unified Approach to Retrieving Web Documents and Semantic Web Data
The Semantic Web seems to be evolving into a property-linked web of RDF data, conceptually divorced from (but physically housed in) the hyperlinked web of HTML documents. We discus...
Trivikram Immaneni, Krishnaprasad Thirunarayan
WEBDB
2009
Springer
112views Database» more  WEBDB 2009»
14 years 2 months ago
Querying DAG-shaped Execution Traces Through Views
The question whether a given set of views, defined by queries, can be used to answer another query, arises in several contexts such as query optimization, data integration and se...
Maya Ben-Ari, Tova Milo, Elad Verbin