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DAWAK
2009
Springer
14 years 1 months ago
What Is Spatio-Temporal Data Warehousing?
Abstract. In the last years, extending OLAP (On-Line Analytical Processing) systems with spatial and temporal features has attracted the attention of of the GIS (Geographic Informa...
Alejandro A. Vaisman, Esteban Zimányi
DOLAP
1999
ACM
14 years 1 months ago
Aggregation Everywhere: Data Reduction and Transformation in the Phoenix Data Warehouse
This paper describes the Phoenix system, which loads a data warehouse and then reports against it. Between the raw atomic data of the source system and the business measures prese...
Steven Tolkin
IAJIT
2008
117views more  IAJIT 2008»
13 years 8 months ago
Using WordNet for Text Categorization
: This paper explores a method that use WordNet concept to categorize text documents. The bag of words representation used for text representation is unsatisfactory as it ignores p...
Zakaria Elberrichi, Abdellatif Rahmoun, Mohamed Am...
SIGMOD
2005
ACM
111views Database» more  SIGMOD 2005»
14 years 9 months ago
Efficient Computation of Multiple Group By Queries
Data analysts need to understand the quality of data in the warehouse. This is often done by issuing many Group By queries on the sets of columns of interest. Since the volume of ...
Zhimin Chen, Vivek R. Narasayya
ICDE
2007
IEEE
116views Database» more  ICDE 2007»
14 years 10 months ago
X-Time: Schema Versioning and Cross-Version Querying in Data Warehouses
In this demo we present X-Time, a prototype for managing schema versioning in relational data warehouses, specifically oriented to support the formulation of crossversion queries,...
Stefano Rizzi, Matteo Golfarelli