Real-time Speech Summarization for Medical Conversations (2406.15888v1)

Abstract: In doctor-patient conversations, identifying medically relevant information is crucial, posing the need for conversation summarization. In this work, we propose the first deployable real-time speech summarization system for real-world applications in industry, which generates a local summary after every N speech utterances within a conversation and a global summary after the end of a conversation. Our system could enhance user experience from a business standpoint, while also reducing computational costs from a technical perspective. Secondly, we present VietMed-Sum which, to our knowledge, is the first speech summarization dataset for medical conversations. Thirdly, we are the first to utilize LLM and human annotators collaboratively to create gold standard and synthetic summaries for medical conversation summarization. Finally, we present baseline results of state-of-the-art models on VietMed-Sum. All code, data (English-translated and Vietnamese) and models are available online: https://github.com/leduckhai/MultiMed

Real-time Speech Summarization for Medical Conversations

The paper "Real-time Speech Summarization for Medical Conversations" presents a novel approach to handling the complex task of generating summaries from real-time medical dialogues. This paper introduces an innovative real-time speech summarization (RTSS) system targeted at improving the efficiency and effectiveness of summarizing medical conversations. The researchers propose a system that generates local summaries after every predefined number of speech utterances and a comprehensive global summary at the conversation's conclusion. This method aims to balance user experience with computational efficiency, which has significant implications for real-world applications in healthcare settings.

Contributions and Methodology

The authors make several noteworthy contributions to the field of speech summarization:

1. Deployable RTSS System: The proposed RTSS system is designed to be the first deployable solution for real-time applications in real-world contexts. By providing timely local summaries and a final global summary, the system reduces cognitive load and potential information overload for healthcare professionals and patients alike.
2. VietMed-Sum Dataset: The paper introduces VietMed-Sum, claimed to be the first speech summarization dataset for medical conversations. This Vietnamese dataset serves as a critical resource for training and evaluating summarization systems in the medical domain.
3. Collaborative Annotation Approach: The authors are pioneering the use of LLMs and human annotators in tandem to create gold-standard summaries. By leveraging ChatGPT, the paper demonstrates a novel pathway for generating both gold and synthetic summaries, effectively bridging the gap between automated and manual data annotation.
4. Baseline Evaluation: The paper provides baseline results using state-of-the-art models on the VietMed-Sum dataset, setting a reference point for future research.

Technical Approach

The paper contrasts its RTSS approach with prior systems that continually update summaries after each utterance. Instead of constant updates, which impose greater computational demands and potentially confuse users, this method produces stable summaries at defined intervals. This modular approach ensures that users are not inundated with updates, maintaining clarity and reducing processing costs.

By analyzing conversation dynamics within the VietMed corpus, the researchers determined that setting the summary generation after 4-5 utterances optimally balances contextual completeness with real-time responsiveness.

Experimental Results

The authors conducted experiments comparing models such as BARTpho and ViT5, and found that fine-tuning models on both synthetic (GPT-generated) and gold-standard data improved performance significantly. Notably, a two-step fine-tuning process (SYN followed by GOLD) further closed the performance gap between human and GPT-annotated summaries. This finding illustrates the potential for synthetic datasets to augment costly human annotation, particularly in resource-limited settings.

On ASR-transcribed data, the performance understandably decreased due to transcription noise, yet the models still maintained reasonable summarization capabilities, suggesting robustness in handling real-world data imperfections.

Implications and Future Directions

The paper's implications extend into practical and theoretical domains. Practically, deploying a robust RTSS system in medical settings can enhance processing and documentation efficiency, potentially improving patient outcomes by ensuring critical information is succinctly captured and relayed. Theoretically, the collaborative approach to data annotation using LLMs opens new avenues for scaling data-intensive tasks more efficiently.

Looking ahead, advancements in LLMs and improving ASR accuracy can further enhance the efficacy of RTSS systems. The release of the VietMed-Sum dataset lays the groundwork for ongoing exploration into multilingual and domain-specific summarization, highlighting the continuing evolution of AI in healthcare. Future research might investigate cross-linguistic generalization and domain adaptation of summarization models to increase the accessibility and applicability of such technology across different languages and medical scenarios.