SATNet: Bridging deep learning and logical reasoning using a differentiable satisfiability solver
This addresses the challenge of combining logical reasoning with deep learning for AI systems, representing a novel method rather than an incremental improvement.
The paper tackles the integration of logical reasoning into deep learning by introducing a differentiable MAXSAT solver, enabling systems to learn logical structures with minimal supervision, such as achieving single-bit supervision for the parity function and solving 9x9 Sudoku from examples.
Integrating logical reasoning within deep learning architectures has been a major goal of modern AI systems. In this paper, we propose a new direction toward this goal by introducing a differentiable (smoothed) maximum satisfiability (MAXSAT) solver that can be integrated into the loop of larger deep learning systems. Our (approximate) solver is based upon a fast coordinate descent approach to solving the semidefinite program (SDP) associated with the MAXSAT problem. We show how to analytically differentiate through the solution to this SDP and efficiently solve the associated backward pass. We demonstrate that by integrating this solver into end-to-end learning systems, we can learn the logical structure of challenging problems in a minimally supervised fashion. In particular, we show that we can learn the parity function using single-bit supervision (a traditionally hard task for deep networks) and learn how to play 9x9 Sudoku solely from examples. We also solve a "visual Sudok" problem that maps images of Sudoku puzzles to their associated logical solutions by combining our MAXSAT solver with a traditional convolutional architecture. Our approach thus shows promise in integrating logical structures within deep learning.