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SIGMOD
2009
ACM
182views Database» more  SIGMOD 2009»
14 years 7 months ago
3-HOP: a high-compression indexing scheme for reachability query
Reachability queries on large directed graphs have attracted much attention recently. The existing work either uses spanning structures, such as chains or trees, to compress the c...
Ruoming Jin, Yang Xiang, Ning Ruan, David Fuhry
IDEAS
2007
IEEE
135views Database» more  IDEAS 2007»
14 years 2 months ago
Bitmap Index Design Choices and Their Performance Implications
Historically, bitmap indexing has provided an important database capability to accelerate queries. However, only a few database systems have implemented these indexes because of t...
Elizabeth J. O'Neil, Patrick E. O'Neil, Kesheng Wu
EUROSSC
2007
Springer
14 years 1 months ago
The Design of a Pressure Sensing Floor for Movement-Based Human Computer Interaction
This paper addresses the design of a large area, high resolution, networked pressure sensing floor with primary application in movement-based human-computer interaction (M-HCI). T...
Sankar Rangarajan, Assegid Kidané, Gang Qia...
NIPS
1997
13 years 9 months ago
EM Algorithms for PCA and SPCA
I present an expectation-maximization (EM) algorithm for principal component analysis (PCA). The algorithm allows a few eigenvectors and eigenvalues to be extracted from large col...
Sam T. Roweis
CORR
2007
Springer
109views Education» more  CORR 2007»
13 years 7 months ago
Delayed Sequential Coding of Correlated Sources
— Motivated by video coding applications, we study the problem of sequential coding of correlated sources with (noncausal) encoding and/or decoding frame-delays. The fundamental ...
Nan Ma, Ye Wang, Prakash Ishwar