{"slug": "up-nrpa-user-portrait-based-nested-rollout-policy-adaptation-for-planning-with", "title": "UP-NRPA: User Portrait based Nested Rollout Policy Adaptation for Planning with Large Language Models in Goal-oriented Dialogue Systems", "summary": "Researchers propose UP-NRPA, an online framework using large language models for dynamic dialogue policy adaptation based on user portraits, achieving a 100% success rate in multiple dialogue tasks and a 56.41% increase in sale-to-list ratio in negotiations.", "body_md": "arXiv:2606.13683v1 Announce Type: new\nAbstract: To address the challenge that current dialogue policy planning methods struggle to dynamically adapt to diverse user characteristics, this paper proposes a User Portrait based Nested Rollout Policy Adaptation (UP-NRPA) online framework with Large Language Models. In contrast to conventional approaches dependent on model training and require offline reinforcement learning policy models for user groups, UP-NRPA enables dynamic customization of dialogue strategies through an adaptive mechanism. This is achieved by leveraging real-time user feedback alongside personality, preferences, and objectives mapped from the current user portrait, thereby adapting to user characteristics without offline reinforcement learning. In collaborative and non-collaborative dialogue benchmarks, UP-NRPA demonstrated considerable benefits, achieving an impressive 100% success rate in multiple dialogue tasks. Particularly in negotiation tasks, the sale-to-list ratio (SL) increased by 56.41%. This demonstrates that UP-NRPA can adapt to diverse user needs without requiring a training mechanism, enabling the dialogue system to adapt to user characteristics.", "url": "https://wpnews.pro/news/up-nrpa-user-portrait-based-nested-rollout-policy-adaptation-for-planning-with", "canonical_source": "https://arxiv.org/abs/2606.13683", "published_at": "2026-06-15 04:00:00+00:00", "updated_at": "2026-06-15 04:14:30.138725+00:00", "lang": "en", "topics": ["large-language-models", "natural-language-processing", "ai-agents"], "entities": ["UP-NRPA", "Large Language Models"], "alternates": {"html": "https://wpnews.pro/news/up-nrpa-user-portrait-based-nested-rollout-policy-adaptation-for-planning-with", "markdown": "https://wpnews.pro/news/up-nrpa-user-portrait-based-nested-rollout-policy-adaptation-for-planning-with.md", "text": "https://wpnews.pro/news/up-nrpa-user-portrait-based-nested-rollout-policy-adaptation-for-planning-with.txt", "jsonld": "https://wpnews.pro/news/up-nrpa-user-portrait-based-nested-rollout-policy-adaptation-for-planning-with.jsonld"}}