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» Answering Multiple-Item Queries in Data Broadcast Systems
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PODS
2009
ACM
130views Database» more  PODS 2009»
16 years 1 months ago
Secondary indexing in one dimension: beyond b-trees and bitmap indexes
Let be a finite, ordered alphabet, and consider a string x = x1x2 . . . xn n . A secondary index for x answers alphabet range queries of the form: Given a range [al, ar] , retu...
Rasmus Pagh, Srinivasa Rao Satti
AINA
2006
IEEE
15 years 7 months ago
Effect of Redundancy on Mean Time to Failure of Wireless Sensor Networks
In query-based wireless sensor networks (WSNs), the system must perform data sensing and retrieval and possibly aggregate data as a response at runtime. Since a WSN is often deplo...
Anh Phan Speer, Ing-Ray Chen
DILS
2005
Springer
15 years 6 months ago
Information Integration and Knowledge Acquisition from Semantically Heterogeneous Biological Data Sources
Abstract. We present INDUS (Intelligent Data Understanding System), a federated, query-centric system for knowledge acquisition from autonomous, distributed, semantically heterogen...
Doina Caragea, Jyotishman Pathak, Jie Bao, Adrian ...
CLEF
2005
Springer
15 years 6 months ago
20th Century Esfinge (Sphinx) Solving the Riddles at CLEF 2005
Abstract. Esfinge is a general domain Portuguese question answering system. It tries to apply simple techniques to large amounts of text. Esfinge participated last year in the mono...
Luís Costa
COOPIS
2003
IEEE
15 years 6 months ago
Static Type-Inference for Trust in Distributed Information Systems
Abstract. Decision-makers in critical fields such as medicine and finance make use of a wide range of information available over the Internet. Mediation, a data integration techn...
Premkumar T. Devanbu, Michael Gertz, Brian Toone