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IMSCCS
2006
IEEE
15 years 5 months ago
A Numerical Approach of Direct-SIMPLE Deduced Pressure Equations to Simulations of Transport Phenomena During Shaped Casting
The properties of a LPAPI-matrix derived from an extended Direct-SIMPLE scheme are demonstrated. It is shown that such LPAPI-matrix for a 3D strong P V coupling problem is difficu...
Daming Xu, Jun Ni
ICML
2006
IEEE
16 years 18 days ago
Fast direct policy evaluation using multiscale analysis of Markov diffusion processes
Policy evaluation is a critical step in the approximate solution of large Markov decision processes (MDPs), typically requiring O(|S|3 ) to directly solve the Bellman system of |S...
Mauro Maggioni, Sridhar Mahadevan
JGAA
2007
87views more  JGAA 2007»
14 years 11 months ago
A 2.5D Hierarchical Drawing of Directed Graphs
We introduce a new graph drawing convention for 2.5D hierarchical drawings of directed graphs. The vertex set is partitioned both into layers of vertices drawn in parallel planes ...
Seok-Hee Hong, Nikola S. Nikolov, Alexandre Tarass...
IPL
2007
121views more  IPL 2007»
14 years 11 months ago
Parameterized complexity of the induced subgraph problem in directed graphs
In this paper, we consider the parameterized complexity of the following problem: Given a hereditary property P on digraphs, an input digraph D and a positive integer k, does D ha...
Venkatesh Raman, Somnath Sikdar
CAIP
1997
Springer
15 years 4 months ago
Optimally Rotation-Equivariant Directional Derivative Kernels
Abstract. We describe a framework for the design of directional derivative kernels for two-dimensional discrete signals in which we optimize a measure of rotation-equivariance in t...
Hany Farid, Eero P. Simoncelli