arXiv — NLP / Computation & Language · · 3 min read

Direct Preference Optimization for Chatbot Fine-Tuning: An Empirical Study

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Computer Science > Computation and Language

arXiv:2606.12881 (cs)
[Submitted on 11 Jun 2026]

Title:Direct Preference Optimization for Chatbot Fine-Tuning: An Empirical Study

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Abstract:We present an approach to fine-tuning large language models using Direct Preference Optimization (DPO), a reinforcement learning technique. Our experimental results demonstrate that DPO simplifies the training pipeline, improves computational efficiency, and achieves competitive performance. The evaluation using BLEU, ROUGE, and cosine similarity metrics indicates effective learning and convergence, though further investigation is needed to address observed training instability.
Comments: 7 pages, 3 figures, 1 table
Subjects: Computation and Language (cs.CL); Machine Learning (cs.LG)
Cite as: arXiv:2606.12881 [cs.CL]
  (or arXiv:2606.12881v1 [cs.CL] for this version)
  https://doi.org/10.48550/arXiv.2606.12881
arXiv-issued DOI via DataCite (pending registration)

Submission history

From: Dezhi Yu [view email]
[v1] Thu, 11 Jun 2026 04:15:54 UTC (170 KB)
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