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» Query reformulation with constraints
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ICDE
2008
IEEE
140views Database» more  ICDE 2008»
14 years 9 months ago
A Security Punctuation Framework for Enforcing Access Control on Streaming Data
The management of privacy and security in the context of data stream management systems (DSMS) remains largely an unaddressed problem to date. Unlike in traditional DBMSs where acc...
Rimma V. Nehme, Elke A. Rundensteiner, Elisa Berti...
ICDE
2006
IEEE
201views Database» more  ICDE 2006»
14 years 9 months ago
Counting at Large: Efficient Cardinality Estimation in Internet-Scale Data Networks
Counting in general, and estimating the cardinality of (multi-) sets in particular, is highly desirable for a large variety of applications, representing a foundational block for ...
Nikos Ntarmos, Peter Triantafillou, Gerhard Weikum
SIGMOD
2004
ACM
162views Database» more  SIGMOD 2004»
14 years 8 months ago
Graph Indexing: A Frequent Structure-based Approach
Graph has become increasingly important in modelling complicated structures and schemaless data such as proteins, chemical compounds, and XML documents. Given a graph query, it is...
Xifeng Yan, Philip S. Yu, Jiawei Han
KBSE
2009
IEEE
14 years 3 months ago
A Petri Net Based Debugging Environment for QVT Relations
—In the Model-Driven Architecture (MDA) paradigm the Query/View/Transformation (QVT) standard plays a vital role for model transformations. Especially the high-level declarative ...
Manuel Wimmer, Gerti Kappel, Johannes Schönb&...
PETRA
2009
ACM
14 years 3 months ago
Towards faster activity search using embedding-based subsequence matching
Event search is the problem of identifying events or activity of interest in a large database storing long sequences of activity. In this paper, our topic is the problem of identi...
Panagiotis Papapetrou, Paul Doliotis, Vassilis Ath...