A BART-based approach with hierarchical strategy for Vietnamese abstractive multi-document summarization

This report presents a BART-based hierarchical approach for Vietnamese multi-document abstractive summarization, addressing challenges identified at the VLSP 2022 workshop. The proposed method condenses documents based on a golden summary, achieving a ROUGE2-F1 score of 0.2468 on the VLSP public test set, and incorporates external data sources to enhance the training dataset. This advancement is significant for practitioners as it improves the quality of summaries in Vietnamese, contributing valuable resources to the community.