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TKDE
2002
148views more  TKDE 2002»
15 years 6 months ago
Parallel Star Join + DataIndexes: Efficient Query Processing in Data Warehouses and OLAP
On-Line Analytical Processing (OLAP) refers to the technologies that allow users to efficiently retrieve data from the data warehouse for decision-support purposes. Data warehouses...
Anindya Datta, Debra E. VanderMeer, Krithi Ramamri...
TKDE
2011
330views more  TKDE 2011»
15 years 1 months ago
Effective Navigation of Query Results Based on Concept Hierarchies
— Search queries on biomedical databases, such as PubMed, often return a large number of results, only a small subset of which is relevant to the user. Ranking and categorization...
Abhijith Kashyap, Vagelis Hristidis, Michalis Petr...
SIGIR
2010
ACM
15 years 4 months ago
DivQ: diversification for keyword search over structured databases
Keyword queries over structured databases are notoriously ambiguous. No single interpretation of a keyword query can satisfy all users, and multiple interpretations may yield over...
Elena Demidova, Peter Fankhauser, Xuan Zhou, Wolfg...
EDBT
2004
ACM
147views Database» more  EDBT 2004»
16 years 6 months ago
Projection Pushing Revisited
The join operation, which combines tuples from multiple relations, is the most fundamental and, typically, the most expensive operation in database queries. The standard approach t...
Benjamin J. McMahan, Guoqiang Pan, Patrick Porter,...
SSDBM
2006
IEEE
197views Database» more  SSDBM 2006»
16 years 15 days ago
InterJoin: Exploiting Indexes and Materialized Views in XPath Evaluation
XML has become the standard for data exchange for a wide variety of applications, particularly in the scientific community. In order to efficiently process queries on XML repres...
Derek Phillips, Ning Zhang 0002, Ihab F. Ilyas, M....