Fine-Tuning Large Language Models for Codebook-Guided Coding of Students’ Mathematics Metaphor Responses

Liang Zhang, Stephen Hwang, Yue Ma, Jinfa Cai


Abstract
Student-generated mathematics metaphors reveal students’ attitudes and beliefs but are costly to code manually. We evaluate LoRA-based fine-tuning of compact open-weight LLMs for valence-intensity and thematic coding. Fine-tuning substantially improves coding performance and reliability, making these models competitive with proprietary prompt-only LLMs while supporting local, privacy-conscious deployment.
Anthology ID:
2026.aimecon-main.48
Volume:
Proceedings of the Artificial Intelligence in Measurement and Education Conference (AIME-Con): Full Papers
Month:
October
Year:
2026
Address:
Wyndham Grand Pittsburgh Downtown, Pittsburgh, Pennsylvania, United States
Editors:
Joshua Wilson, Christopher Ormerod, Magdalen Beiting-Parrish
Venue:
AIME-Con
SIG:
Publisher:
National Council on Measurement in Education (NCME)
Note:
Pages:
433–442
Language:
URL:
https://aclanthology.org/2026.aimecon-main.48/
DOI:
Bibkey:
Cite (ACL):
Liang Zhang, Stephen Hwang, Yue Ma, and Jinfa Cai. 2026. Fine-Tuning Large Language Models for Codebook-Guided Coding of Students’ Mathematics Metaphor Responses. In Proceedings of the Artificial Intelligence in Measurement and Education Conference (AIME-Con): Full Papers, pages 433–442, Wyndham Grand Pittsburgh Downtown, Pittsburgh, Pennsylvania, United States. National Council on Measurement in Education (NCME).
Cite (Informal):
Fine-Tuning Large Language Models for Codebook-Guided Coding of Students’ Mathematics Metaphor Responses (Zhang et al., AIME-Con 2026)
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PDF:
https://aclanthology.org/2026.aimecon-main.48.pdf