← Search

Linxi Fan

33 accepted papers

2026

NitroGen: An Open Foundation Model for Generalist Gaming Agents

CVPR 2026

We introduce NitroGen, a vision-action foundation model for generalist gaming agents that is trained on 40,000 hours of gameplay videos across more than 1,000 games. We scale embodied agents through three key ingredients: 1) an internet-scale video-action dataset constructed by automatically extract

Cited by 0SourcecodeScholar
2026

Opening the Sim-to-Real Door for Humanoid Pixel-to-Action Policy Transfer

CVPR 2026

Recent progress in GPU-accelerated, photorealistic simulation has opened a scalable data-generation path for robot learning, where massive physics and visual randomization allow policies to generalize beyond curated environments. Building on these advances, we develop a teacher-student-bootstrap lea

Cited by 0SourcecodeScholar
2026

Self-Improving Vision-Language-Action Models with Data Generation via Residual RL

ICLR 2026poster

Supervised fine-tuning (SFT) has become the de facto post-training strategy for large vision-language-action (VLA) models, but its reliance on costly human demonstrations limits scalability and generalization. We propose Probe, Learn, Distill (PLD), a plug-and-play framework that improves VLAs throu…

Cited by 0SourceScholar
2026

VIRAL: Visual Sim-to-Real at Scale for Humanoid Loco-Manipulation

CVPR 2026

A key barrier to the real-world deployment of humanoid robots is the lack of autonomous loco-manipulation skills. We introduce VIRAL, a visual sim-to-real framework that learns humanoid loco-manipulation entirely in simulation and deploys it zero-shot to real hardware. VIRAL follows a teacher-studen

Cited by 0SourcecodeScholar
2025

ASAP: Aligning Simulation and Real-World Physics for Learning Agile Humanoid Whole-Body Skills

RSS 2025poster

Humanoid robots hold the potential for unparalleled versatility by performing human-like, whole-body skills. However, achieving agile and coordinated whole-body motions remains a significant challenge due to the dynamics mismatch between simulation and real-world physics. Existing approaches, such a…

Cited by 15PDFcodeScholar
2025

DexUMI: Using Human Hand as the Universal Manipulation Interface for Dexterous Manipulation

CoRL 2025oral

We present DexUMI - a data collection and policy learning framework that uses the human hand as the natural interface to transfer dexterous manipulation skills to various robot hands. DexUMI incorporates hardware and software adaptations to minimize the embodiment gap between the human hand and vari…

Cited by 107SourceScholar
2025

DreamGen: Unlocking Generalization in Robot Learning through Video World Models

CoRL 2025poster

In this work, we unlock new capabilities in robot learning from neural trajectories, synthetic robot data generated from video world models. Our proposed recipe is simple, but powerful: we take the most recent state-of-the-art video generative models (world models), adapt them to the target robot em…

Cited by 0SourcecodeScholar
2025

FLARE: Robot Learning with Implicit World Modeling

CoRL 2025poster

We introduce **F**uture **LA**tent **R**presentation Alignm**E**nt (**FLARE**), a novel framework that integrates predictive world modeling into robot policy learning. By aligning features from a diffusion transformer with latent embeddings of future observations, **FLARE** enables a diffusion trans…

Cited by 0SourceScholar
2025

LongVILA: Scaling Long-Context Visual Language Models for Long Videos

ICLR 2025poster

Long-context capability is critical for multi-modal foundation models, especially for long video understanding. We introduce LongVILA, a full-stack solution for long-context visual-language models by co-designing the algorithm and system. For model training, we upgrade existing VLMs to support long…

2025

One-Step Diffusion Policy: Fast Visuomotor Policies via Diffusion Distillation

ICML 2025poster

Diffusion models, praised for their success in generative tasks, are increasingly being applied to robotics, demonstrating exceptional performance in behavior cloning. However, their slow generation process stemming from iterative denoising steps poses a challenge for real-time applications in resou…

Cited by 11SourcePDFScholar
2025

Sim-and-Real Co-Training: A Simple Recipe for Vision-Based Robotic Manipulation

RSS 2025poster

Large real-world robot datasets hold great potential for developing generalist robot policies, but scaling real-world data collection is time-consuming, costly, and resource-intensive. Simulation offers a promising solution, with recent advances in generative AI and synthetic data generation tools e…

Cited by 4PDFScholar
2025

Sim-to-Real Reinforcement Learning for Vision-Based Dexterous Manipulation on Humanoids

CoRL 2025poster

Learning generalizable robot manipulation policies, especially for complex multi-fingered humanoids, remains a significant challenge. Existing approaches primarily rely on extensive data collection and imitation learning, which are expensive, labor-intensive, and difficult to scale. Sim-to-real rein…

Cited by 0SourceScholar
2024

AMAGO: Scalable In-Context Reinforcement Learning for Adaptive Agents

ICLR 2024spotlight

We introduce AMAGO, an in-context Reinforcement Learning (RL) agent that uses sequence models to tackle the challenges of generalization, long-term memory, and meta-learning. Recent works have shown that off-policy learning can make in-context RL with recurrent policies viable. Nonetheless, these ap…

2024

ARDuP: Active Region Video Diffusion for Universal Policies

IROS 2024poster

Sequential decision-making can be formulated as a text-conditioned video generation problem, where a video planner, guided by a text-defined goal, generates future frames visualizing planned actions, from which control actions are subsequently derived. In this work, we introduce Active Region Video…

Cited by 3SourceScholar
2024

DrEureka: Language Model Guided Sim-To-Real Transfer

RSS 2024poster

Transferring policies learned in simulation to the real world is a promising strategy for acquiring robot skills at scale. However, sim-to-real approaches typically rely on manual design and tuning of the task reward function as well as the simulation physics parameters, rendering the process slow a…

Cited by 104SourcePDFScholar
2024

Eureka: Human-Level Reward Design via Coding Large Language Models

ICLR 2024poster

Large Language Models (LLMs) have excelled as high-level semantic planners for sequential decision-making tasks. However, harnessing them to learn complex low-level manipulation tasks, such as dexterous pen spinning, remains an open problem. We bridge this fundamental gap and present Eureka, a human…

2023

Cross-Episodic Curriculum for Transformer Agents

NeurIPS 2023poster

We present a new algorithm, Cross-Episodic Curriculum (CEC), to boost the learning efficiency and generalization of Transformer agents. Central to CEC is the placement of cross-episodic experiences into a Transformer’s context, which forms the basis of a curriculum. By sequentially structuring onlin…

2023

MimicGen: A Data Generation System for Scalable Robot Learning using Human Demonstrations

CoRL 2023poster

Imitation learning from a large set of human demonstrations has proved to be an effective paradigm for building capable robot agents. However, the demonstrations can be extremely costly and time-consuming to collect. We introduce MimicGen, a system for automatically synthesizing large-scale, rich da…

Cited by 120SourcecodeScholar
2023

MimicPlay: Long-Horizon Imitation Learning by Watching Human Play

CoRL 2023oral

Imitation learning from human demonstrations is a promising paradigm for teaching robots manipulation skills in the real world. However, learning complex long-horizon tasks often requires an unattainable amount of demonstrations. To reduce the high data requirement, we resort to human play data - vi…

Cited by 187SourcecodeScholar
2023

Re-ViLM: Retrieval-Augmented Visual Language Model for Zero and Few-Shot Image Captioning

EMNLP 2023long findings

Augmenting pretrained language models (LMs) with a vision encoder~(e.g., Flamingo) has obtained state-of-the-art results in image-to-text generation. However, these models store all the knowledge within their parameters, thus often requiring enormous model parameters to model the abundant visual con…

Cited by 0SourceScholar
2023

VIMA: Robot Manipulation with Multimodal Prompts

ICML 2023poster

Prompt-based learning has emerged as a successful paradigm in natural language processing, where a single general-purpose language model can be instructed to perform any task specified by input prompts. Yet task specification in robotics comes in various forms, such as imitating one-shot demonstrati…

2022

MetaMorph: Learning Universal Controllers with Transformers

ICLR 2022poster

Multiple domains like vision, natural language, and audio are witnessing tremendous progress by leveraging Transformers for large scale pre-training followed by task specific fine tuning. In contrast, in robotics we primarily train a single robot for a single task. However, modular robot systems now…

2022

MineDojo: Building Open-Ended Embodied Agents with Internet-Scale Knowledge

NeurIPS 2022accept

Autonomous agents have made great strides in specialist domains like Atari games and Go. However, they typically learn tabula rasa in isolated environments with limited and manually conceived objectives, thus failing to generalize across a wide spectrum of tasks and capabilities. Inspired by how hum…

2022

Pre-Trained Language Models for Interactive Decision-Making

NeurIPS 2022accept

Language model (LM) pre-training is useful in many language processing tasks. But can pre-trained LMs be further leveraged for more general machine learning problems? We propose an approach for using LMs to scaffold learning and generalization in general sequential decision-making problems. In this…

Cited by 229SourcePDFScholar
2021

SECANT: Self-Expert Cloning for Zero-Shot Generalization of Visual Policies

ICML 2021spotlight

Generalization has been a long-standing challenge for reinforcement learning (RL). Visual RL, in particular, can be easily distracted by irrelevant factors in high-dimensional observation space. In this work, we consider robust policy learning which targets zero-shot generalization to unseen visual…

2021

iGibson 1.0: A Simulation Environment for Interactive Tasks in Large Realistic Scenes

IROS 2021poster

We present iGibson 1.0, a novel simulation environment to develop robotic solutions for interactive tasks in large-scale realistic scenes. Our environment contains 15 fully interactive home-sized scenes with 108 rooms populated with rigid and articulated objects. The scenes are replicas of real-worl…

Cited by 193SourceScholar
2020

RubiksNet: Learnable 3D-Shift for Efficient Video Action Recognition

ECCV 2020poster

Video action recognition is a complex task dependent on modeling spatial and temporal context. Standard approaches rely on 2D or 3D convolutions to process such context, resulting in expensive operations with millions of parameters. Recent efficient architectures leverage a channel-wise shift-based…

2018

SURREAL: Open-Source Reinforcement Learning Framework and Robot Manipulation Benchmark

CoRL 2018

Reproducibility has been a significant challenge in deep reinforcement learning and robotics research. Open-source frameworks and standardized benchmarks can serve an integral role in rigorous evaluation and reproducible research. We introduce SURREAL, an open-source scalable framework that supports

2017

World of Bits: An Open-Domain Platform for Web-Based Agents

ICML 2017poster

While simulated game environments have greatly accelerated research in reinforcement learning, existing environments lack the open-domain realism of tasks in computer vision or natural language processing, which operate on artifacts created by humans in natural, organic settings. To foster reinforce…

Cited by 244SourcePDFScholar
2016

A comparison between deep neural nets and kernel acoustic models for speech recognition

ICASSP 2016accepted

We study large-scale kernel methods for acoustic modeling and compare to DNNs on performance metrics related to both acoustic modeling and recognition. Measuring perplexity and frame-level classification accuracy, kernel-based acoustic models are as effective as their DNN counterparts. However, on t…

Cited by 0SourceScholar
2016

Deconstructing the Ladder Network Architecture

ICML 2016poster

The Ladder Network is a recent new approach to semi-supervised learning that turned out to be very successful. While showing impressive performance, the Ladder Network has many components intertwined, whose contributions are not obvious in such a complex architecture. This paper presents an extensiv…

Cited by 137SourcePDFScholar
2016

Deep Speech 2 : End-to-End Speech Recognition in English and Mandarin

ICML 2016poster

We show that an end-to-end deep learning approach can be used to recognize either English or Mandarin Chinese speech–two vastly different languages. Because it replaces entire pipelines of hand-engineered components with neural networks, end-to-end learning allows us to handle a diverse variety of s…