Aokun Chen


2024

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UF-HOBI at “Discharge Me!”: A Hybrid Solution for Discharge Summary Generation Through Prompt-based Tuning of GatorTronGPT Models
Mengxian Lyu | Cheng Peng | Daniel Paredes | Ziyi Chen | Aokun Chen | Jiang Bian | Yonghui Wu
Proceedings of the 23rd Workshop on Biomedical Natural Language Processing

Automatic generation of discharge summaries presents significant challenges due to the length of clinical documentation, the dispersed nature of patient information, and the diverse terminology used in healthcare. This paper presents a hybrid solution for generating discharge summary sections as part of our participation in the “Discharge Me!” Challenge at the BioNLP 2024 Shared Task. We developed a two-stage generation method using both extractive and abstractive techniques, in which we first apply name entity recognition (NER) to extract key clinical concepts, which are then used as input for a prompt-tuning based GatorTronGPT model to generate coherent text for two important sections including “Brief Hospital Course” and “Discharge Instructions”. Our system was ranked 5th in this challenge, achieving an overall score of 0.284. The results demonstrate the effectiveness of our hybrid solution in improving the quality of automated discharge section generation.

2023

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On the Impact of Cross-Domain Data on German Language Models
Amin Dada | Aokun Chen | Cheng Peng | Kaleb Smith | Ahmad Idrissi-Yaghir | Constantin Seibold | Jianning Li | Lars Heiliger | Christoph Friedrich | Daniel Truhn | Jan Egger | Jiang Bian | Jens Kleesiek | Yonghui Wu
Findings of the Association for Computational Linguistics: EMNLP 2023

Traditionally, large language models have been either trained on general web crawls or domain-specific data. However, recent successes of generative large language models, have shed light on the benefits of cross-domain datasets. To examine the significance of prioritizing data diversity over quality, we present a German dataset comprising texts from five domains, along with another dataset aimed at containing high-quality data. Through training a series of models ranging between 122M and 750M parameters on both datasets, we conduct a comprehensive benchmark on multiple downstream tasks. Our findings demonstrate that the models trained on the cross-domain dataset outperform those trained on quality data alone, leading to improvements up to 4.45% over the previous state-of-the-art.