LiGCN: Label-interpretable Graph Convolutional Networks for Multi-label Text Classification

Irene Li, Aosong Feng, Hao Wu, Tianxiao Li, Toyotaro Suzumura, Ruihai Dong

Keywords: multi-label text classification, graph convolutional networks, heterogeneous graph

TL;DR: We propose a label-interpretable graph convolutional network model to solve the multi-label text classification problem by modeling tokens and labels as nodes in a heterogeneous graph.

Abstract: Multi-label text classification (MLTC) is an attractive and challenging task in natural language processing (NLP). Compared with single-label text classification, MLTC has a wider range of applications in practice. In this paper, we propose a label-interpretable graph convolutional network model to solve the MLTC problem by modeling tokens and labels as nodes in a heterogeneous graph. In this way, we are able to take into account multiple relationships including token-level relationships. Besides, the model allows better interpretability for predicted labels as the token-label edges are exposed. We evaluate our method on four real-world datasets and it achieves competitive scores against selected baseline methods. Specifically, this model achieves a gain of 0.14 on the F1 score in the small label set MLTC, and 0.07 in the large label set scenario.