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» A Geometrically Enhanced Conceptual Model and Query Language
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ER
2010
Springer
129views Database» more  ER 2010»
13 years 6 months ago
Specifying Aggregation Functions in Multidimensional Models with OCL
Multidimensional models are at the core of data warehouse systems, since they allow decision makers to early define the relevant information and queries that are required to satis...
Jordi Cabot, Jose-Norberto Mazón, Jes&uacut...
ECIR
2008
Springer
13 years 9 months ago
Enhancing Relevance Models with Adaptive Passage Retrieval
Passage retrieval and pseudo relevance feedback/query expansion have been reported as two effective means for improving document retrieval in literature. Relevance models, while im...
Xiaoyan Li, Zhigang Zhu
LREC
2010
211views Education» more  LREC 2010»
13 years 9 months ago
EcoLexicon: An Environmental TKB
EcoLexicon, a multilingual knowledge resource on the environment, provides an internally coherent information system covering a wide range of specialized linguistic and conceptual...
Arianne Reimerink, Pilar León Araúz,...
DBPL
1997
Springer
94views Database» more  DBPL 1997»
13 years 11 months ago
Querying Multidimensional Databases
Abstract. Multidimensional databases are large collections of data, often historical, used for sophisticated analysis oriented to decision making. This activity is supported by an ...
Luca Cabibbo, Riccardo Torlone
ICCSA
2009
Springer
14 years 2 months ago
Designing Data Warehouses for Geographic OLAP Querying by Using MDA
Data aggregation in Geographic Information Systems (GIS) is a desirable feature, spatial data are integrated in OLAP engines for this purpose. However, the development and operatio...
Octavio Glorio, Juan Trujillo