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Mohi Khansari

14 accepted papers

2023

Asking for Help: Failure Prediction in Behavioral Cloning through Value Approximation

ICRA 2023poster

Recent progress in end-to-end Imitation Learning approaches has shown promising results and generalization capabilities on mobile manipulation tasks. Such models are seeing increasing deployment in real-world settings, where scaling up requires robots to be able to operate with high autonomy, i.e. r…

Cited by 7SourceScholar
2023

On Designing a Learning Robot: Improving Morphology for Enhanced Task Performance and Learning

IROS 2023poster

As robots become more prevalent, optimizing their design for better performance and efficiency is becoming increasingly important. However, current robot design practices overlook the impact of perception and design choices on a robot's learning capabilities. To address this gap, we propose a compre…

Cited by 1SourcecodeScholar
2023

Practical Visual Deep Imitation Learning via Task-Level Domain Consistency

ICRA 2023poster

Recent work in visual end-to-end learning for robotics has shown the promise of imitation learning across a variety of tasks. Such approaches are however expensive both because they require large amounts of real world data and rely on time-consuming real-world evaluations to identify the best model…

Cited by 3SourceScholar
2022

Bayesian Imitation Learning for End-to-End Mobile Manipulation

ICML 2022spotlight

In this work we investigate and demonstrate benefits of a Bayesian approach to imitation learning from multiple sensor inputs, as applied to the task of opening office doors with a mobile manipulator. Augmenting policies with additional sensor inputs{—}such as RGB + depth cameras{—}is a straightforw…

Cited by 12SourcePDFScholar
2021

AW-Opt: Learning Robotic Skills with Imitation andReinforcement at Scale

CoRL 2021poster

Robotic skills can be learned via imitation learning (IL) using user-provided demonstrations, or via reinforcement learning (RL) using large amounts of autonomously collected experience. Both methods have complementary strengths and weaknesses: RL can reach a high level of performance, but requires…

Cited by 47SourceScholar
2021

BC-Z: Zero-Shot Task Generalization with Robotic Imitation Learning

CoRL 2021poster

In this paper, we study the problem of enabling a vision-based robotic manipulation system to generalize to novel tasks, a long-standing challenge in robot learning. We approach the challenge from an imitation learning perspective, aiming to study how scaling and broadening the data collected can fa…

Cited by 594SourceScholar
2021

RetinaGAN: An Object-aware Approach to Sim-to-Real Transfer

ICRA 2021poster

The success of deep reinforcement learning (RL) and imitation learning (IL) in vision-based robotic manipulation typically hinges on the expense of large scale data collection. With simulation, data to train a policy can be collected efficiently at scale, but the visual gap between sim and real make…

Cited by 115SourcecodeScholar
2020

Action Image Representation: Learning Scalable Deep Grasping Policies with Zero Real World Data

ICRA 2020poster

This paper introduces Action Image, a new grasp proposal representation that allows learning an end-to-end deep-grasping policy. Our model achieves 84% grasp success on 172 real world objects while being trained only in simulation on 48 objects with just naive domain randomization. Similar to comput…

Cited by 29SourceScholar
2020

Modeling Long-horizon Tasks as Sequential Interaction Landscapes

CoRL 2020

Task planning over long-time horizons is a challenging and open problem in robotics and its complexity grows exponentially with an increasing number of subtasks. In this paper we present a deep neural network that learns dependencies and transitions across subtasks solely from a set of demonstration

Cited by 0SourcePDFScholar
2020

Online Learning of Object Representations by Appearance Space Feature Alignment

ICRA 2020poster

We propose a self-supervised approach for learning representations of objects from monocular videos and demonstrate it is particularly useful for robotics. The main contributions of this paper are: 1) a self-supervised model called Object-Contrastive Network (OCN) that can discover and disentangle o…

Cited by 15SourceScholar
2020

RL-CycleGAN: Reinforcement Learning Aware Simulation-to-Real

CVPR 2020oral

Deep neural network based reinforcement learning (RL) can learn appropriate visual representations for complex tasks like vision-based robotic grasping without the need for manually engineering or prior learning a perception system. However, data for RL is collected via running an agent in the desir…

Cited by 241PDFScholar
2020

Scalable Multi-Task Imitation Learning with Autonomous Improvement

ICRA 2020poster

While robot learning has demonstrated promising results for enabling robots to automatically acquire new skills, a critical challenge in deploying learning-based systems is scale: acquiring enough data for the robot to effectively generalize broadly. Imitation learning, in particular, has remained a…

Cited by 46SourceScholar
2020

Watch, Try, Learn: Meta-Learning from Demonstrations and Rewards

ICLR 2020poster

Imitation learning allows agents to learn complex behaviors from demonstrations. However, learning a complex vision-based task may require an impractical number of demonstrations. Meta-imitation learning is a promising approach towards enabling agents to learn a new task from one or a few demonstrat…

Cited by 69SourceScholar
2019

Learning Latent Plans from Play

CoRL 2019

Acquiring a diverse repertoire of general-purpose skills remains an open challenge for robotics. In this work, we propose self-supervising control on top of human teleoperated play data as a way to scale up skill learning. Play has two properties that make it attractive compared to conventional task