Search Results for author: Annie S. Chen

Found 10 papers, 5 papers with code

Self-Guided Masked Autoencoders for Domain-Agnostic Self-Supervised Learning

1 code implementation22 Feb 2024 Johnathan Xie, Yoonho Lee, Annie S. Chen, Chelsea Finn

Self-supervised learning excels in learning representations from large amounts of unlabeled data, demonstrating success across multiple data modalities.

Property Prediction Self-Supervised Learning

Adapt On-the-Go: Behavior Modulation for Single-Life Robot Deployment

no code implementations2 Nov 2023 Annie S. Chen, Govind Chada, Laura Smith, Archit Sharma, Zipeng Fu, Sergey Levine, Chelsea Finn

We provide theoretical analysis of our selection mechanism and demonstrate that ROAM enables a robot to adapt rapidly to changes in dynamics both in simulation and on a real Go1 quadruped, even successfully moving forward with roller skates on its feet.

Confidence-Based Model Selection: When to Take Shortcuts for Subpopulation Shifts

no code implementations19 Jun 2023 Annie S. Chen, Yoonho Lee, Amrith Setlur, Sergey Levine, Chelsea Finn

Effective machine learning models learn both robust features that directly determine the outcome of interest (e. g., an object with wheels is more likely to be a car), and shortcut features (e. g., an object on a road is more likely to be a car).

Model Selection

Language-Driven Representation Learning for Robotics

2 code implementations24 Feb 2023 Siddharth Karamcheti, Suraj Nair, Annie S. Chen, Thomas Kollar, Chelsea Finn, Dorsa Sadigh, Percy Liang

First, we demonstrate that existing representations yield inconsistent results across these tasks: masked autoencoding approaches pick up on low-level spatial features at the cost of high-level semantics, while contrastive learning approaches capture the opposite.

Contrastive Learning Imitation Learning +2

Project and Probe: Sample-Efficient Domain Adaptation by Interpolating Orthogonal Features

no code implementations10 Feb 2023 Annie S. Chen, Yoonho Lee, Amrith Setlur, Sergey Levine, Chelsea Finn

Transfer learning with a small amount of target data is an effective and common approach to adapting a pre-trained model to distribution shifts.

Domain Adaptation Transfer Learning

Surgical Fine-Tuning Improves Adaptation to Distribution Shifts

1 code implementation20 Oct 2022 Yoonho Lee, Annie S. Chen, Fahim Tajwar, Ananya Kumar, Huaxiu Yao, Percy Liang, Chelsea Finn

A common approach to transfer learning under distribution shift is to fine-tune the last few layers of a pre-trained model, preserving learned features while also adapting to the new task.

Transfer Learning

You Only Live Once: Single-Life Reinforcement Learning

no code implementations17 Oct 2022 Annie S. Chen, Archit Sharma, Sergey Levine, Chelsea Finn

We formalize this problem setting, which we call single-life reinforcement learning (SLRL), where an agent must complete a task within a single episode without interventions, utilizing its prior experience while contending with some form of novelty.

Continuous Control reinforcement-learning +1

Just Train Twice: Improving Group Robustness without Training Group Information

1 code implementation19 Jul 2021 Evan Zheran Liu, Behzad Haghgoo, Annie S. Chen, aditi raghunathan, Pang Wei Koh, Shiori Sagawa, Percy Liang, Chelsea Finn

Standard training via empirical risk minimization (ERM) can produce models that achieve high accuracy on average but low accuracy on certain groups, especially in the presence of spurious correlations between the input and label.

Image Classification Out-of-Distribution Generalization

Learning Generalizable Robotic Reward Functions from "In-The-Wild" Human Videos

no code implementations31 Mar 2021 Annie S. Chen, Suraj Nair, Chelsea Finn

We find that by leveraging diverse human datasets, this reward function (a) can generalize zero shot to unseen environments, (b) generalize zero shot to unseen tasks, and (c) can be combined with visual model predictive control to solve robotic manipulation tasks on a real WidowX200 robot in an unseen environment from a single human demo.

Model Predictive Control

Batch Exploration with Examples for Scalable Robotic Reinforcement Learning

1 code implementation22 Oct 2020 Annie S. Chen, HyunJi Nam, Suraj Nair, Chelsea Finn

Concretely, we propose an exploration technique, Batch Exploration with Examples (BEE), that explores relevant regions of the state-space, guided by a modest number of human provided images of important states.

Offline RL reinforcement-learning +1

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