Towards Scalable Automated Grading: Leveraging Large Language Models for Conceptual Question Evaluation in Engineering

• URL: http://arxiv.org/abs/2411.03659v1
• Date: Wed, 06 Nov 2024 04:41:13 GMT
• Title: Towards Scalable Automated Grading: Leveraging Large Language Models for Conceptual Question Evaluation in Engineering
• Authors: Rujun Gao, Xiaosu Guo, Xiaodi Li, Arun Balajiee Lekshmi Narayanan, Naveen Thomas, Arun R. Srinivasa,
• Abstract summary: This study explores the feasibility of using large language models (LLMs) for automated grading of conceptual questions. We compared the grading performance of GPT-4o with that of human teaching assistants (TAs) on ten quiz problems from the MEEN 361 course at Texas A&M University. Our analysis reveals that GPT-4o performs well when grading criteria are straightforward but struggles with nuanced answers.
• Score: 5.160473221022088
• License:
• Abstract: This study explores the feasibility of using large language models (LLMs), specifically GPT-4o (ChatGPT), for automated grading of conceptual questions in an undergraduate Mechanical Engineering course. We compared the grading performance of GPT-4o with that of human teaching assistants (TAs) on ten quiz problems from the MEEN 361 course at Texas A&M University, each answered by approximately 225 students. Both the LLM and TAs followed the same instructor-provided rubric to ensure grading consistency. We evaluated performance using Spearman's rank correlation coefficient and Root Mean Square Error (RMSE) to assess the alignment between rankings and the accuracy of scores assigned by GPT-4o and TAs under zero- and few-shot grading settings. In the zero-shot setting, GPT-4o demonstrated a strong correlation with TA grading, with Spearman's rank correlation coefficient exceeding 0.6 in seven out of ten datasets and reaching a high of 0.9387. Our analysis reveals that GPT-4o performs well when grading criteria are straightforward but struggles with nuanced answers, particularly those involving synonyms not present in the rubric. The model also tends to grade more stringently in ambiguous cases compared to human TAs. Overall, ChatGPT shows promise as a tool for grading conceptual questions, offering scalability and consistency.

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