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» Concurrency, Time, and Constraints
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VLDB
2004
ACM
128views Database» more  VLDB 2004»
16 years 3 days ago
Operator scheduling in data stream systems
In many applications involving continuous data streams, data arrival is bursty and data rate fluctuates over time. Systems that seek to give rapid or realtime query responses in su...
Brian Babcock, Shivnath Babu, Mayur Datar, Rajeev ...
SIGMOD
2004
ACM
162views Database» more  SIGMOD 2004»
16 years 1 days 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
SIGMOD
2001
ACM
134views Database» more  SIGMOD 2001»
16 years 1 days ago
Preservation of Digital Data with Self-Validating, Self-Instantiating Knowledge-Based Archives
Digital archives are dedicated to the long-term preservation of electronic information and have the mandate to enable sustained access despite rapid technology changes. Persistent...
Bertram Ludäscher, Richard Marciano, Reagan Moore
PODS
2007
ACM
159views Database» more  PODS 2007»
16 years 23 hour ago
Generalized hypertree decompositions: np-hardness and tractable variants
The generalized hypertree width GHW(H) of a hypergraph H is a measure of its cyclicity. Classes of conjunctive queries or constraint satisfaction problems whose associated hypergr...
Georg Gottlob, Thomas Schwentick, Zoltán Mi...
ICFP
2008
ACM
15 years 12 months ago
Flask: staged functional programming for sensor networks
Severely resource-constrained devices present a confounding challenge to the functional programmer: we are used to having powerful ion facilities at our fingertips, but how can we...
Geoffrey Mainland, Greg Morrisett, Matt Welsh