Lattice AI Research

Research focus

Data Curation & Synthetic Data (2)Computer Vision (1)Architecture Design (Transformers, SSMs, MoE) (1)RLHF & Preference Learning (1)

Frequent co-authors

Peiran Li (1)Jiawei Wang (1)Haoran Zhang (1)Xiaodan Shi (1)

Papers (2)

Mar 16, 2026

Tsinghua AIMar 16, 2026

TrajFlow: Nation-wide Pseudo GPS Trajectory Generation with Flow Matching Models

Generate realistic GPS trajectories across an entire nation with TrajFlow, a new flow-matching model that leapfrogs diffusion-based approaches in scale, diversity, and efficiency.

Peiran Li, Jiawei Wang, Haoran Zhang +5

Computer Vision Data Curation & Synthetic Data

Feb 24, 2026

Chuang Yang +3Feb 24, 2026·also LocationMind

TrajGPT-R: Generating Urban Mobility Trajectory with Reinforcement Learning-Enhanced Generative Pre-trained Transformer

TrajGPT-R generates realistic urban mobility trajectories by cleverly combining IRL with a pre-trained transformer, sidestepping the usual challenges of RL in autoregressive sequence generation.

Chuang Yang, Xiaohang Xu, Ryosuke Shibasaki +1

Architecture Design (Transformers, SSMs, MoE)Data Curation & Synthetic Data RLHF & Preference Learning

Search

Renhe Jiang

Research focus

Frequent co-authors

Papers (2)