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arXiv 提交日期: 2026-04-23
📄 Abstract - Graph Neural Network-Informed Predictive Flows for Faster Ford-Fulkerson and PAC-Learnability

We propose a learning-augmented framework for accelerating max-flow computation and image segmentation by integrating Graph Neural Networks (GNNs) with the Ford-Fulkerson algorithm. Rather than predicting initial flows, our method learns edge importance probabilities to guide augmenting path selection. We introduce a Message Passing GNN (MPGNN) that jointly learns node and edge embeddings through coupled updates, capturing both global structure and local flow dynamics such as residual capacity and bottlenecks. Given an input image, we propose a method to construct a grid-based flow network with source and sink nodes, extract features, and perform a single GNN inference to assign edge probabilities reflecting their likelihood of belonging to high-capacity cuts. These probabilities are stored in a priority queue and used to guide a modified Ford-Fulkerson procedure, prioritizing augmenting paths via an Edmonds-Karp-style search with bottleneck-aware tie-breaking. This avoids repeated inference over residual graphs while leveraging learned structure throughout optimization. We further introduce a bidirectional path construction strategy centered on high-probability edges and provide a theoretical framework relating prediction quality to efficiency via a weighted permutation distance metric. Our method preserves max-flow/min-cut optimality while reducing the number of augmentations in practice. We also outline a hybrid extension combining flow warm-starting with edge-priority prediction, establishing a foundation for learning-guided combinatorial optimization in image segmentation.

顶级标签: machine learning computer vision theory
详细标签: graph neural network max-flow image segmentation optimization pac-learnability 或 搜索:

图神经网络驱动的预测流:加速福特-富克森算法及其PAC可学习性 / Graph Neural Network-Informed Predictive Flows for Faster Ford-Fulkerson and PAC-Learnability


1️⃣ 一句话总结

本研究提出一种结合图神经网络与经典福特-富克森算法的新方法,通过学习图中每条边的重要性概率来智能选择增广路径,从而在不影响最大流/最小割最优解的前提下显著加速计算,并提供了理论上保证学习效果与效率提升关系的PAC可学习性分析。

源自 arXiv: 2604.21175