441 search results - page 7 / 89 » Query expansion using random walk models |
WSC
2007
14 years 4 days ago
2007
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...
NDQA
2004
13 years 11 months ago
2004
ICC
2008
IEEE
14 years 4 months ago
2008
IEEE
—The class of isotropic random walk mobility models, including Random Direction mobility model, Random Walk mobility model and Brownian motion mobility model, has been widely use...
ADHOCNOW
2004
Springer
14 years 3 months ago
2004
Springer
Consider k particles, 1 red and k −1 white, chasing each other on the nodes of a graph G. If the red one catches one of the white, it “infects” it with its color. The newly ...
AAAI
2008
14 years 4 days ago
2008
In this paper, we propose a novel approach to expand queries by exploring both location information and topic information of the queries. Users at different locations tend to have...