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CAISE
2003
Springer
14 years 23 days ago
Multidimensional Schemas Quality Assessment
: A data warehouse is a database focused on decision making. It is built separately from the transactional (OLTP) databases of the enterprise, although it is partly fed from transa...
Nicolas Prat, Samira Si-Said Cherfi
ICASSP
2008
IEEE
14 years 2 months ago
Distributed multi-dimensional hidden Markov models for image and trajectory-based video classifications
In this paper, we propose a novel multi-dimensional distributed hidden Markov model (DHMM) framework. We first extend the theory of 2D hidden Markov models (HMMs) to arbitrary ca...
Xiang Ma, Dan Schonfeld, Ashfaq A. Khokhar
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...
ICIP
2005
IEEE
14 years 9 months ago
Multidimensional phase unwrapping for consistent APF estimation
The instantaneous amplitude, phase, and frequency (APF) characterize a nonstationary signal on a fundamental level. In this paper, we seek to obtain a consistent multidimensional ...
Roy A. Sivley, Joseph P. Havlicek
WSC
2007
13 years 10 months ago
Rare-event simulation for a multidimensional random walk with t distributed increments
We consider the problem of efficient estimation of first passage time probabilities for a multidimensional random walk with t distributed increments, via simulation. In addition...
Jose H. Blanchet, Jingchen Liu