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» Query Transformation for PSJ-Queries
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MODELS
2007
Springer
14 years 2 months ago
Bidirectional Model Transformations in QVT: Semantic Issues and Open Questions
Abstract. We consider the OMG’s Queries, Views and Transformations (QVT) standard as applied to the specification of bidirectional transformations between models. We discuss wha...
Perdita Stevens
SEMWEB
2009
Springer
14 years 3 months ago
Learning Semantic Query Suggestions
An important application of semantic web technology is recognizing human-defined concepts in text. Query transformation is a strategy often used in search engines to derive querie...
Edgar Meij, Marc Bron, Laura Hollink, Bouke Huurni...
DOLAP
2003
ACM
14 years 1 months ago
Exploiting hierarchical clustering in evaluating multidimensional aggregation queries
Multidimensional aggregation queries constitute the single most important class of queries for data warehousing applications and decision support systems. The bottleneck in the ev...
Dimitri Theodoratos
WSR
2008
13 years 10 months ago
Graph Technology in Reverse Engineering: The TGraph Approach
: TGraphs are directed graphs with typed, attributed, and ordered nodes and edges. These properties leverage the use of graphs as models for all kinds of artifacts in the context o...
Jürgen Ebert, Volker Riediger, Andreas Winter
SIGMOD
2010
ACM
236views Database» more  SIGMOD 2010»
14 years 1 months ago
Differentially private aggregation of distributed time-series with transformation and encryption
We propose PASTE, the first differentially private aggregation algorithms for distributed time-series data that offer good practical utility without any trusted server. PASTE add...
Vibhor Rastogi, Suman Nath