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Main Authors: Buakhaw, Pasin, Kerdthaisong, Kun, Phenhiran, Phuree, Khlaisamniang, Pitikorn, Vorathammathorn, Supasate, Ittichaiwong, Piyalitt, Yongsatianchot, Nutchanon
Format: Preprint
Published: 2025
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Online Access:https://arxiv.org/abs/2510.13586
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author Buakhaw, Pasin
Kerdthaisong, Kun
Phenhiran, Phuree
Khlaisamniang, Pitikorn
Vorathammathorn, Supasate
Ittichaiwong, Piyalitt
Yongsatianchot, Nutchanon
author_facet Buakhaw, Pasin
Kerdthaisong, Kun
Phenhiran, Phuree
Khlaisamniang, Pitikorn
Vorathammathorn, Supasate
Ittichaiwong, Piyalitt
Yongsatianchot, Nutchanon
contents The emergence of large language models (LLMs) has opened new opportunities for creating dynamic non-player characters (NPCs) in gaming environments, enabling both functional task execution and persona-consistent dialogue generation. In this paper, we (Tu_Character_lab) report our participation in the Commonsense Persona-Grounded Dialogue Challenge (CPDC) 2025 Round 2, which evaluates agents across three tracks: task-oriented dialogue, context-aware dialogue, and their integration. Our approach combines two complementary strategies: (i) lightweight prompting techniques in the API track, including a Deflanderization prompting method to suppress excessive role-play and improve task fidelity, and (ii) fine-tuned large models in the GPU track, leveraging Qwen3-14B with supervisedfinetuning (SFT) and Low-Rank Adaptation(LoRA). Our best submissions ranked 2nd on Task 1, 2nd on Task 3 (API track), and 4th on Task 3 (GPU track).
format Preprint
id arxiv_https___arxiv_org_abs_2510_13586
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Deflanderization for Game Dialogue: Balancing Character Authenticity with Task Execution in LLM-based NPCs
Buakhaw, Pasin
Kerdthaisong, Kun
Phenhiran, Phuree
Khlaisamniang, Pitikorn
Vorathammathorn, Supasate
Ittichaiwong, Piyalitt
Yongsatianchot, Nutchanon
Computation and Language
Artificial Intelligence
The emergence of large language models (LLMs) has opened new opportunities for creating dynamic non-player characters (NPCs) in gaming environments, enabling both functional task execution and persona-consistent dialogue generation. In this paper, we (Tu_Character_lab) report our participation in the Commonsense Persona-Grounded Dialogue Challenge (CPDC) 2025 Round 2, which evaluates agents across three tracks: task-oriented dialogue, context-aware dialogue, and their integration. Our approach combines two complementary strategies: (i) lightweight prompting techniques in the API track, including a Deflanderization prompting method to suppress excessive role-play and improve task fidelity, and (ii) fine-tuned large models in the GPU track, leveraging Qwen3-14B with supervisedfinetuning (SFT) and Low-Rank Adaptation(LoRA). Our best submissions ranked 2nd on Task 1, 2nd on Task 3 (API track), and 4th on Task 3 (GPU track).
title Deflanderization for Game Dialogue: Balancing Character Authenticity with Task Execution in LLM-based NPCs
topic Computation and Language
Artificial Intelligence
url https://arxiv.org/abs/2510.13586