Multi-instance multi-label position-aware doubly graph convolutional networks
Zhi LI , Teng ZHANG , Yilin WANG , Caiwu JIANG , Xuanhua SHI , Hai JIN
Front. Comput. Sci. ›› 2026, Vol. 20 ›› Issue (2) : 2002312
Multi-instance multi-label position-aware doubly graph convolutional networks
Multi-instance multi-label learning is a general framework in which each sample is represented as a bag of instances associated with multiple labels. However, two weaknesses remain and hinder its performance in real-world tasks. One is that bag generators often neglect positional information (e.g., the location of a pixel in the image) when generating bags, making position-related labels indistinguishable. The other is that the MIL assumption does not always hold. In some real-world tasks, labels have hierarchical low-level concepts, and these concepts are related to certain combinations of instances instead of one single instance. In this paper, we propose the Position-Aware Doubly Graph Convolutional Networks (). On the one hand, generates bags by arranging instances in a multi-instance graph to aggregate instances’ features by exploiting positional relationships among them. Then instances that aggregate other instances’ features are input into a neural network to obtain sub-sub-concepts used for multi-label learning. On the other hand, learns sub-concepts from labels and organizes sub-sub-concepts, sub-concepts, and labels in a tripartite multi-label graph in hyperbolic space to exploit their hierarchical structure. Experiments are conducted on 6 image and text data sets. Compared to the SOTA methods, padGCN averagely achieves 5% improvement on 7 measurements. Pair-wise t-test results on 42 experiments indicate that padGCN is significantly better than SOTA methods in 30 experiments, comparable to SOTA methods in 12 experiments, and never worse than SOTA methods, which verifies the superiority and robustness of padGCN. Runtime experiments show that padGCN is comparable to SOTA methods and is computationally efficient.
multi-instance / multi-label / GCN
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Higher Education Press
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