801 search results - page 13 / 161 » Estimating Likelihoods for Topic Models |
PAMI
2010
14 years 10 months ago
2010
—Adapting the hyperparameters of support vector machines (SVMs) is a challenging model selection problem, especially when flexible kernels are to be adapted and data are scarce....
124
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ICML
2006
IEEE
16 years 16 days ago
2006
IEEE
Latent Dirichlet allocation (LDA) and other related topic models are increasingly popular tools for summarization and manifold discovery in discrete data. However, LDA does not ca...
110
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ICASSP
2008
IEEE
15 years 6 months ago
2008
IEEE
We propose new algorithms for estimating autoregressive (AR), moving average (MA), and ARMA models in the spectral domain. These algorithms are derived from a maximum likelihood a...
124
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JMLR
2008
14 years 11 months ago
2008
In graphical modelling, a bi-directed graph encodes marginal independences among random variables that are identified with the vertices of the graph. We show how to transform a bi...
VALUETOOLS
2006
ACM
15 years 5 months ago
2006
ACM
Importance sampling (IS) is the most widely used efficiency improvement method for rare-event simulation. When estimating the probability of a rare event, the IS estimator is the ...