Jiawei Ren
jiawei011 AT e.ntu.edu.sg
I am a Research Scientist at NVIDIA Spatial Intelligence Lab led by Prof. Sanja Fidler. I was a PhD student in Computer Science at Nanyang Technological University, advised by Prof. Ziwei Liu.
My current research interest is in scalable dynamic 3D synthesis, with the vision of building "world simulators". Three threads - perception, reconstruction, and simulation - form a closed loop:
Github  / 
Google Scholar
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Generalizable 4D Reconstruction
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Feed-Forward Bullet-Time Reconstruction of Dynamic Scenes from Monocular Videos
Hanxue Liang*, Jiawei Ren*, Ashkan Mirzaei*, Antonio Torralba, Ziwei Liu, Igor Gilitschenski, Sanja Fidler, Sanja Fidler, Cengiz Oztireli, Huan Ling, Zan Gojcic, Jiahui Huang
arxiv, 2024
Arxiv /
Project Page
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L4GM: Large 4D Gaussian Reconstruction Model
Jiawei Ren, Kevin Xie, Ashkan Mirzaei, Hanxue Liang, Xiaohui Zeng, Karsten Kreis, Ziwei Liu, Antonio Torralba, Sanja Fidler, Seung Wook Kim, Huan Ling
NeurIPS, 2024
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Project Page
Simulated Motion Synthesis
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InsActor: Instruction-driven Physics-based Characters
Jiawei Ren*,
Mingyuan Zhang*,
Cunjun Yu*,
Xiao Ma,
Liang Pan,
Ziwei Liu
NeurIPS, 2023
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Video
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DiffMimic: Efficient Motion Mimicking with Differentiable Physics
Jiawei Ren*,
Cunjun Yu*,
Siwei Chen,
Xiao Ma,
Liang Pan,
Ziwei Liu
ICLR, 2023
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Video
Scalable 3D Perception
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LaserMix for Semi-Supervised LiDAR Semantic Segmentation
Lingdong Kong*,
Jiawei Ren*,
Liang Pan,
Ziwei Liu
CVPR, 2023   (Highlight)
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Project Page
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Benchmarking and Analyzing Point Cloud Classification under Corruptions
Jiawei Ren,
Liang Pan,
Ziwei Liu
ICML, 2022
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Talk/
Demo/
Challenge
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Balanced MSE for Imbalanced Visual Regression
Jiawei Ren,
Mingyuan Zhang,
Cunjun Yu,
Ziwei Liu
CVPR, 2022   (Oral)
Arxiv /
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Tutorial
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