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Author

Lei-Lei Sun

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Open access Jul 2026

TRIP: A Bi-level Travel Routing Intelligent Planner Informed from Human Planning Behaviors

TRIP, a bi-level Travel Routing Intelligent Planner, which consists of macro-planning based on the user’s personalized requirements and micro-planning to consider hard constraints to generate travel itineraries that better satisfy personalized requirements and hard constraints is proposed.

Yunqi Liu, Ruixing Zhang, Yuou Chen et al. · 0 citations
Preprint Aug 2026

Intent Speaks Louder: Controllable User Simulation Beyond Response Imitation

This work introduces UserIDA (User Intent-Directive Alignment), which exposes interaction intent as an explicit per-turn directive, and establishes per-turn intent control as a complementary dimension to response fidelity in user simulation.

Bo Wang, Ruixing Zhang, Yunqi Liu et al. · 0 citations
#artificial intelligence Preprint Aug 2026

SemPOI-RL: Aligning LLM Semantic Reasoning for Interpretable Out-of-Town POI Sequential Generation

SemPOI-RL is proposed, a framework that aligns LLM semantic reasoning with structured sequence generation for interpretable OOT recommendation and consistently outperforms both traditional recommenders and direct LLM baselines, while providing interpretable style attribution across different phases of a trip.

Yunqi Liu, Yang Zhang, Ruixing Zhang et al. · 0 citations

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