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SIGMOD
2008
ACM
206views Database» more  SIGMOD 2008»
14 years 7 months ago
Ad-hoc aggregations of ranked lists in the presence of hierarchies
A variety of web sites and web based services produce textual lists at varying time granularities ranked according to several criteria. For example, Google Trends produces lists o...
Nilesh Bansal, Sudipto Guha, Nick Koudas
EDBT
2004
ACM
187views Database» more  EDBT 2004»
14 years 7 months ago
Hierarchical In-Network Data Aggregation with Quality Guarantees
Earlier work has demonstrated the effectiveness of in-network data aggregation in order to minimize the amount of messages exchanged during continuous queries in large sensor netwo...
Antonios Deligiannakis, Yannis Kotidis, Nick Rouss...
PODS
1999
ACM
151views Database» more  PODS 1999»
13 years 11 months ago
Exact and Approximate Aggregation in Constraint Query
We investigate the problem of how to extend constraint query languages with aggregate operators. We deal with standard relational aggregation, and also with aggregates speci c to ...
Michael Benedikt, Leonid Libkin
ICDM
2010
IEEE
130views Data Mining» more  ICDM 2010»
13 years 5 months ago
Using Taxonomies to Perform Aggregated Querying over Imprecise Data
-- In this paper, we put forward our approach for answering aggregated queries over imprecise data using domain specific taxonomies. A new concept we call the weighted hierarchical...
Atanu Roy, Chandrima Sarkar, Rafal A. Angryk
GI
2001
Springer
13 years 12 months ago
Cost and Quality-of-Service-aware Network Service Deployment
Abstract: This paper presents the information aggregation methods enabling cost- and QoS-aware service deployment. It is expected that network management tools will require the net...
Robert Haas, Patrick Droz, Burkhard Stiller