Enhancing Interprofessional Communication in Healthcare Using Large Language Models: Study on Similarity Measurement Methods with Weighted Noun Embeddings

초록

Large language models (LLMs) are increasingly applied to specialized domains like medical education, necessitating tailored approaches to evaluate structured responses such as SBAR (Situation, Background, Assessment, Recommendation). This study developed an evaluation tool for nursing student responses using LLMs, focusing on word-based learning and assessment methods to align automated scoring with expert evaluations. We propose a three-stage biasing approach: (1) integrating reference answers into the training corpus; (2) incorporating high-scoring student responses; (3) applying domain-critical token weighting through Weighted Noun Embeddings to enhance similarity measurements. By assigning higher weights to critical medical nouns and lower weights to less relevant terms, the embeddings prioritize domain-specific terminology. Employing Word2Vec and FastText models trained on general conversation, medical, and reference answer corpora alongside Sentence-BERT for comparison, our results demonstrate that biasing with reference answers, high-scoring responses, and weighted embeddings improves alignment with human evaluations. Word-based models, particularly after biasing, effectively distinguish high-performing responses from lower ones, as evidenced by increased cosine similarity differences. These findings validate that the proposed methodology enhances the precision and objectivity of evaluating descriptive answers, offering a practical solution for educational settings where fairness and consistency are paramount.

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