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Poster
Entropic Graph Regularization in Non-Parametric Semi-Supervised Classification
Amarnag Subramanya · Jeff Bilmes

Mon Dec 07 07:00 PM -- 11:59 PM (PST) @ None #None

We prove certain theoretical properties of a graph-regularized transductive learning objective that is based on minimizing a Kullback-Leibler divergence based loss. These include showing that the iterative alternating minimization procedure used to minimize the objective converges to the correct solution and deriving a test for convergence. We also propose a graph node ordering algorithm that is cache cognizant and leads to a linear speedup in parallel computations. This ensures that the algorithm scales to large data sets. By making use of empirical evaluation on the TIMIT and Switchboard I corpora, we show this approach is able to out-perform other state-of-the-art SSL approaches. In one instance, we solve a problem on a 120 million node graph.

Author Information

Amarnag Subramanya (Google Inc.)
Jeff Bilmes (University of Washington, Seattle)

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