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JOLLI
2006
101views more  JOLLI 2006»
13 years 7 months ago
A Note on the Expressive Power of Probabilistic Context Free Grammars
We examine the expressive power of probabilistic context free grammars (PCFGs), with a special focus on the use of probabilities as a mechanism for reducing ambiguity by filtering ...
Gabriel G. Infante López, Maarten de Rijke
SI3D
2012
ACM
12 years 3 months ago
Fast, effective BVH updates for animated scenes
Bounding volume hierarchies (BVHs) are a popular acceleration structure choice for animated scenes rendered with ray tracing. This is due to the relative simplicity of refitting ...
Daniel Kopta, Thiago Ize, Josef B. Spjut, Erik Bru...
KBSE
2007
IEEE
14 years 1 months ago
Test suite reduction and prioritization with call trees
This paper presents a tool that (i) constructs tree-based models of a program’s behavior during testing and (ii) employs these trees while reordering and reducing a test suite. ...
Adam M. Smith, Joshua Geiger, Gregory M. Kapfhamme...
ICDM
2005
IEEE
143views Data Mining» more  ICDM 2005»
14 years 1 months ago
Effective Estimation of Posterior Probabilities: Explaining the Accuracy of Randomized Decision Tree Approaches
There has been increasing number of independently proposed randomization methods in different stages of decision tree construction to build multiple trees. Randomized decision tre...
Wei Fan, Ed Greengrass, Joe McCloskey, Philip S. Y...
WABI
2004
Springer
109views Bioinformatics» more  WABI 2004»
14 years 1 months ago
Online Consensus and Agreement of Phylogenetic Trees
Computational heuristics are the primary methods for reconstruction of phylogenetic trees on large datasets. Most large-scale phylogenetic analyses produce numerous trees that are ...
Tanya Y. Berger-Wolf