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JCSS
2011
107views more  JCSS 2011»
15 years 27 days ago
The isomorphism conjecture for constant depth reductions
For any class C closed under TC0 reductions, and for any measure u of uniformity containing Dlogtime, it is shown that all sets complete for C under u-uniform AC0 reductions are i...
Manindra Agrawal
NDJFL
2010
15 years 21 days ago
Decidability and Computability of Certain Torsion-Free Abelian Groups
We study completely decomposable torsion-free abelian groups of the form GS := nSQpn for sets S . We show that GS has a decidable copy if and only if S is 0 2 and has a computable...
Rodney G. Downey, Sergei S. Goncharov, Asher M. Ka...
IRI
2007
IEEE
16 years 7 days ago
MAGIC: A Multi-Activity Graph Index for Activity Detection
Suppose we are given a set A of activities of interest, a set O of observations, and a probability threshold p. We are interested in finding the set of all pairs (a, O ), where a...
Massimiliano Albanese, Andrea Pugliese, V. S. Subr...
CGF
2010
179views more  CGF 2010»
15 years 6 months ago
Binary Orientation Trees for Volume and Surface Reconstruction from Unoriented Point Clouds
Given a complete unoriented point set, we propose a binary orientation tree (BOT) for volume and surface representation, which roughly splits the space into the interior and exter...
Yi-Ling Chen, Bing-Yu Chen, Shang-Hong Lai, Tomoyu...
PRESENCE
2002
119views more  PRESENCE 2002»
15 years 5 months ago
Visual Homing Is Possible Without Landmarks: A Path Integration Study in Virtual Reality
The literature often suggests that proprioceptive and especially vestibular cues are required for navigation and spatial orientation tasks involving rotations of the observer. To ...
Bernhard E. Riecke, Henricus A. H. C. van Veen, He...