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VLDB
1999
ACM
159views Database» more  VLDB 1999»
14 years 2 months ago
Aggregation Algorithms for Very Large Compressed Data Warehouses
Many efficient algorithms to compute multidimensional aggregation and Cube for relational OLAP have been developed. However, to our knowledge, there is nothing to date in the lite...
Jianzhong Li, Doron Rotem, Jaideep Srivastava
ICDE
2011
IEEE
382views Database» more  ICDE 2011»
13 years 3 months ago
A Unified Approach for Computing Top-k Pairs in Multidimensional Space
Muhammad Aamir Cheema, Xuemin Lin, Haixun Wang, Ji...
ICASSP
2008
IEEE
14 years 4 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
ICIP
2005
IEEE
14 years 11 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
14 years 6 days 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