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DOLAP
2004
ACM
14 years 1 months ago
Physical modeling of data warehouses using UML
During the few last years, several approaches have been proposed to model different aspects of a Data Warehouse (DW), such as the conceptual model of the DW, the design of the ET...
Sergio Luján-Mora, Juan Trujillo
ICASSP
2008
IEEE
14 years 2 months ago
Ultrasonic Doppler sensor for speaker recognition
In this paper we present a novel use of an acoustic Doppler sonar for multi-modal speaker identification. An ultrasonic emitter directs a 40kHz tone toward the speaker. Reflecti...
Kaustubh Kalgaonkar, Bhiksha Raj
SIGMOD
2006
ACM
232views Database» more  SIGMOD 2006»
14 years 8 months ago
To search or to crawl?: towards a query optimizer for text-centric tasks
Text is ubiquitous and, not surprisingly, many important applications rely on textual data for a variety of tasks. As a notable example, information extraction applications derive...
Panagiotis G. Ipeirotis, Eugene Agichtein, Pranay ...
BMCBI
2010
155views more  BMCBI 2010»
13 years 8 months ago
A flexible R package for nonnegative matrix factorization
Background: Nonnegative Matrix Factorization (NMF) is an unsupervised learning technique that has been applied successfully in several fields, including signal processing, face re...
Renaud Gaujoux, Cathal Seoighe
ICSE
2008
IEEE-ACM
14 years 9 months ago
Data flow testing of service-oriented workflow applications
WS-BPEL applications are a kind of service-oriented application. They use XPath extensively to integrate loosely-coupled workflow steps. However, XPath may extract wrong data from...
Lijun Mei, W. K. Chan, T. H. Tse