MedExQA: Medical Question Answering Benchmark with Multiple Explanations

Fuente: arXiv
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Main Authors: Kim, Yunsoo, Wu, Jinge, Abdulle, Yusuf, Wu, Honghan
Format: Preprint
Published: 2024
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author Kim, Yunsoo
Wu, Jinge
Abdulle, Yusuf
Wu, Honghan
author_facet Kim, Yunsoo
Wu, Jinge
Abdulle, Yusuf
Wu, Honghan
contents This paper introduces MedExQA, a novel benchmark in medical question-answering, to evaluate large language models' (LLMs) understanding of medical knowledge through explanations. By constructing datasets across five distinct medical specialties that are underrepresented in current datasets and further incorporating multiple explanations for each question-answer pair, we address a major gap in current medical QA benchmarks which is the absence of comprehensive assessments of LLMs' ability to generate nuanced medical explanations. Our work highlights the importance of explainability in medical LLMs, proposes an effective methodology for evaluating models beyond classification accuracy, and sheds light on one specific domain, speech language pathology, where current LLMs including GPT4 lack good understanding. Our results show generation evaluation with multiple explanations aligns better with human assessment, highlighting an opportunity for a more robust automated comprehension assessment for LLMs. To diversify open-source medical LLMs (currently mostly based on Llama2), this work also proposes a new medical model, MedPhi-2, based on Phi-2 (2.7B). The model outperformed medical LLMs based on Llama2-70B in generating explanations, showing its effectiveness in the resource-constrained medical domain. We will share our benchmark datasets and the trained model.
format Preprint
id arxiv_https___arxiv_org_abs_2406_06331
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle MedExQA: Medical Question Answering Benchmark with Multiple Explanations
Kim, Yunsoo
Wu, Jinge
Abdulle, Yusuf
Wu, Honghan
Computation and Language
Artificial Intelligence
This paper introduces MedExQA, a novel benchmark in medical question-answering, to evaluate large language models' (LLMs) understanding of medical knowledge through explanations. By constructing datasets across five distinct medical specialties that are underrepresented in current datasets and further incorporating multiple explanations for each question-answer pair, we address a major gap in current medical QA benchmarks which is the absence of comprehensive assessments of LLMs' ability to generate nuanced medical explanations. Our work highlights the importance of explainability in medical LLMs, proposes an effective methodology for evaluating models beyond classification accuracy, and sheds light on one specific domain, speech language pathology, where current LLMs including GPT4 lack good understanding. Our results show generation evaluation with multiple explanations aligns better with human assessment, highlighting an opportunity for a more robust automated comprehension assessment for LLMs. To diversify open-source medical LLMs (currently mostly based on Llama2), this work also proposes a new medical model, MedPhi-2, based on Phi-2 (2.7B). The model outperformed medical LLMs based on Llama2-70B in generating explanations, showing its effectiveness in the resource-constrained medical domain. We will share our benchmark datasets and the trained model.
title MedExQA: Medical Question Answering Benchmark with Multiple Explanations
topic Computation and Language
Artificial Intelligence
url https://arxiv.org/abs/2406.06331