Poster
Interpretable Neural Networks with Frank-Wolfe: Sparse Relevance Maps and Relevance Orderings
Jan Macdonald · Mathieu Besançon · Sebastian Pokutta
Hall E #936
Keywords: [ DL: Everything Else ] [ OPT: First-order ] [ OPT: Stochastic ] [ OPT: Non-Convex ] [ APP: Computer Vision ] [ SA: Accountability, Transparency and Interpretability ]
We study the effects of constrained optimization formulations and Frank-Wolfe algorithms for obtaining interpretable neural network predictions. Reformulating the Rate-Distortion Explanations (RDE) method for relevance attribution as a constrained optimization problem provides precise control over the sparsity of relevance maps. This enables a novel multi-rate as well as a relevance-ordering variant of RDE that both empirically outperform standard RDE and other baseline methods in a well-established comparison test. We showcase several deterministic and stochastic variants of the Frank-Wolfe algorithm and their effectiveness for RDE.