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Hierarchical Information Matters: Text Classification via Tree Based Graph Neural Network
AbstractText classification is a primary task in natural language processing (NLP). Recently, graph neural networks (GNNs) have developed rapidly and been applied to text classification tasks. As a special kind …...
HiTIN: Hierarchy-aware Tree Isomorphism Network for Hierarchical Text Classification
AbstractHierarchical text classification (HTC) is a challenging subtask of multi-label classification as the labels form a complex hierarchical structure. Existing dual-encoder methods in HTC achieve weak performance gains with huge …...