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arxiv: 1805.08665 · v1 · pith:PEJXYANVnew · submitted 2018-05-22 · 📊 stat.ML · cs.LG

Structured Bayesian Gaussian process latent variable model

classification 📊 stat.ML cs.LG
keywords modelbayesianlatentvariableboundcomputationaldatagaussian
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We introduce a Bayesian Gaussian process latent variable model that explicitly captures spatial correlations in data using a parameterized spatial kernel and leveraging structure-exploiting algebra on the model covariance matrices for computational tractability. Inference is made tractable through a collapsed variational bound with similar computational complexity to that of the traditional Bayesian GP-LVM. Inference over partially-observed test cases is achieved by optimizing a "partially-collapsed" bound. Modeling high-dimensional time series systems is enabled through use of a dynamical GP latent variable prior. Examples imputing missing data on images and super-resolution imputation of missing video frames demonstrate the model.

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