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» The Constellation Query Language
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ERSHOV
2009
Springer
14 years 2 months ago
On the Containment Problem for Queries in Conjunctive Form with Negation
Abstract. We consider the problem of query containment for conjunctive queries with safe negation property. A necessary and sufficient condition for two queries to be in containmen...
Victor Felea
DATESO
2009
101views Database» more  DATESO 2009»
13 years 5 months ago
Using Top Trees For Easy Programming of Tree Algorithms
Top trees are a dynamic self-adjusting data structure that can be used by any tree algorithm. Actually, an arbitrary number of different tree algorithms can use a single structure....
Michal Vajbar
VLDB
1997
ACM
103views Database» more  VLDB 1997»
13 years 11 months ago
Towards an ODMG-Compliant Visual Object Query Language
Wedescribethedesign,implementationanduser evaluationof QUIVER,agraph-basedvisualquery languageforobjectdatabases.Thedesigngoalsof QUIVERincludecomplianceto standards,comprehensive...
Manoj Chavda, Peter T. Wood
FQAS
2000
Springer
115views Database» more  FQAS 2000»
13 years 11 months ago
Weighted Semantic Parsing: A Robust Approach to Interpretation of Natural Language Queries
This paper focuses on a grammar-based approach to semantic interpretation, which combines the notions of robust and weighted parsing. In restricted domains of application in infor...
Afzal Ballim, Vincenzo Pallotta
TVCG
2008
103views more  TVCG 2008»
13 years 7 months ago
Who Votes For What? A Visual Query Language for Opinion Data
Surveys and opinion polls are extremely popular in the media, especially in the months preceding a general election. However, the available tools for analyzing poll results often r...
Geoffrey M. Draper, Richard F. Riesenfeld