ActivityEditor: Learning to Synthesize Physically Valid Human Mobility

📰 ArXiv cs.AI

ActivityEditor is a dual-LLM-agent framework for synthesizing physically valid human mobility trajectories in new regions without historical data

advanced Published 8 Apr 2026
Action Steps
  1. Decompose the synthesis task into smaller sub-tasks using a dual-LLM-agent framework
  2. Train the framework using available data from other regions to learn generalizable patterns
  3. Use the trained framework to generate physically valid trajectories in new regions without historical data
  4. Evaluate the generated trajectories for validity and accuracy
Who Needs to Know This

This research benefits AI engineers and researchers working on human mobility modeling, as well as urban planners and transportation experts who can apply the synthesized trajectories to inform their decisions

Key Insight

💡 A dual-LLM-agent framework can be used to generate physically valid human mobility trajectories in new regions without relying on local historical data

Share This
🚶‍♀️ Synthesize human mobility trajectories without historical data using ActivityEditor! 📈

Key Takeaways

ActivityEditor is a dual-LLM-agent framework for synthesizing physically valid human mobility trajectories in new regions without historical data

Full Article

Title: ActivityEditor: Learning to Synthesize Physically Valid Human Mobility

Abstract:
arXiv:2604.05529v1 Announce Type: new Abstract: Human mobility modeling is indispensable for diverse urban applications. However, existing data-driven methods often suffer from data scarcity, limiting their applicability in regions where historical trajectories are unavailable or restricted. To bridge this gap, we propose \textbf{ActivityEditor}, a novel dual-LLM-agent framework designed for zero-shot cross-regional trajectory generation. Our framework decomposes the complex synthesis task into
Read full paper → ← Back to Reads

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