Diversity-Aware Coherence Loss for Improving Neural Topic Models
Raymond Li, Felipe Gonzalez-Pizarro, Linzi Xing, Gabriel Murray, Giuseppe Carenini
Abstract
The standard approach for neural topic modeling uses a variational autoencoder (VAE) framework that jointly minimizes the KL divergence between the estimated posterior and prior, in addition to the reconstruction loss. Since neural topic models are trained by recreating individual input documents, they do not explicitly capture the coherence between words on the corpus level. In this work, we propose a novel diversity-aware coherence loss that encourages the model to learn corpus-level coherence scores while maintaining high diversity between topics. Experimental results on multiple datasets show that our method significantly improves the performance of neural topic models without requiring any pretraining or additional parameters.
BibTeX
@inproceedings{li-etal-2023-diversity,
title = "Diversity-Aware Coherence Loss for Improving Neural Topic Models",
author = "Li, Raymond and
Gonzalez-Pizarro, Felipe and
Xing, Linzi and
Murray, Gabriel and
Carenini, Giuseppe",
editor = "Rogers, Anna and
Boyd-Graber, Jordan and
Okazaki, Naoaki",
booktitle = "Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers)",
month = jul,
year = "2023",
address = "Toronto, Canada",
publisher = "Association for Computational Linguistics",
url = "https://aclanthology.org/2023.acl-short.145/",
doi = "10.18653/v1/2023.acl-short.145",
pages = "1710--1722"
}