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Workshop: Differentiable Almost Everything: Differentiable Relaxations, Algorithms, Operators, and Simulators

Differentiable MaxSAT Message Passing

Francesco Alesiani · Cristóbal Corvalán Morbiducci · Markus Zopf


The message-passing principle is used in the most popular neural networks for graph-structured data. However, current message-passing approaches use black-box neural models that transform features over continuous domain, thus limiting the description capability of GNNs.In this work, we explore a novel type of message passing based on a differentiable satisfiability solver. Our model learns logical rules thatencode which and how messages are passed from one node to another node. The rules are learned in a relaxed continuous space, which renders the training process end-to-end differentiable and thus enables standard gradient-based training. In our experiments we show that MAXSAT-MP learns arithmetic operations and that is on par with state-of-the-art GNNs on graph structured data.

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