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» Answering Queries using Humans, Algorithms and Databases
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ESWS
2011
Springer
14 years 6 months ago
Optimizing Query Shortcuts in RDF Databases
The emergence of the Semantic Web has led to the creation of large semantic knowledge bases, often in the form of RDF databases. Improving the performance of RDF databases necessit...
Vicky Dritsou, Panos Constantopoulos, Antonios Del...
165
Voted
TKDE
2010
197views more  TKDE 2010»
14 years 10 months ago
Filtering Data Streams for Entity-Based Continuous Queries
The idea of allowing query users to relax their correctness requirements in order to improve performance of a data stream management system (e.g., location-based services and senso...
Reynold Cheng, Benjamin C. M. Kao, Alan Kwan, Suni...
ICDE
2005
IEEE
108views Database» more  ICDE 2005»
16 years 4 months ago
Range Efficient Computation of F0 over Massive Data Streams
Efficient one-pass computation of F0, the number of distinct elements in a data stream, is a fundamental problem arising in various contexts in databases and networking. We consid...
Pavan Aduri, Srikanta Tirthapura
190
Voted
SIGMOD
2005
ACM
100views Database» more  SIGMOD 2005»
16 years 3 months ago
A Disk-Based Join With Probabilistic Guarantees
One of the most common operations in analytic query processing is the application of an aggregate function to the result of a relational join. We describe an algorithm for computi...
Chris Jermaine, Alin Dobra, Subramanian Arumugam, ...
FINTAL
2006
15 years 7 months ago
A Text Mining Approach for Definition Question Answering
This paper describes a method for definition question answering based on the use of surface text patterns. The method is specially suited to answer questions about person's po...
Claudia Denicia-Carral, Manuel Montes-y-Góm...