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Efficient Inference and Learning for Structured Models

Speaker  Alexander G. Schwing

Affiliation  ETH Zurich

Host  Sudipta Sinha

Duration  00:55:52

Date recorded  9 May 2013

Sensors acquire an increasing amount of diverse information posing two challenges. Firstly, how can we efficiently deal with such a big amount of data and secondly, how can we benefit from this diversity? In this talk I will first present an approach to deal with large graphical models. The presented method distributes and parallelizes the computation and memory requirements while preserving convergence and optimality guarantees of existing algorithms. I will demonstrate the effectiveness of the approach on stereo reconstruction from high-resolution imagery. In the second part I will present a unified framework for structured prediction with latent variables which includes hidden conditional random fields and latent structured support vector machines as special cases. This framework allows to linearly combine different sources of information and I will demonstrate its efficacy on the problem of estimating the 3D room layout given a single image. For the latter problem, I will introduce a globally optimal yet efficient inference algorithm based on branch-and-bound.

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