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Daniel Ho

13 accepted papers

2024

MultiLegalPile: A 689GB Multilingual Legal Corpus

ACL 2024long

Large, high-quality datasets are crucial for training Large Language Models (LLMs). However, so far, few datasets are available for specialized critical domains such as law and the available ones are often small and only in English. To fill this gap, we curate and release MultiLegalPile, a 689GB cor…

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

Deep RL at Scale: Sorting Waste in Office Buildings with a Fleet of Mobile Manipulators

RSS 2023poster

We describe a system for deep reinforcement learning of robotic manipulation skills applied to a large-scale real-world task: sorting recyclables and trash in office buildings. Real-world deployment of deep RL policies requires not only effective training algorithms, but the ability to bootstrap rea…

Cited by 30SourcePDFScholar
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
2022

Do As I Can, Not As I Say: Grounding Language in Robotic Affordances

CoRL 2022oral

Large language models can encode a wealth of semantic knowledge about the world. Such knowledge could be extremely useful to robots aiming to act upon high-level, temporally extended instructions expressed in natural language. However, a significant weakness of language models is that they lack real…

Cited by 1747SourcecodeScholar
2021

COCOI: Contact-aware Online Context Inference for Generalizable Non-planar Pushing

IROS 2021poster

General contact-rich manipulation problems are long-standing challenges in robotics due to the difficulty of understanding complicated contact physics. Deep reinforcement learning (RL) has shown great potential in solving robot manipulation tasks. However, existing RL policies have limited adaptabil…

Cited by 15SourcecodeScholar
2021

NBDT: Neural-Backed Decision Tree

ICLR 2021poster

Machine learning applications such as finance and medicine demand accurate and justifiable predictions, barring most deep learning methods from use. In response, previous work combines decision trees with deep learning, yielding models that (1) sacrifice interpretability for accuracy or (2) sacrific…

2021

RICA: Evaluating Robust Inference Capabilities Based on Commonsense Axioms

EMNLP 2021main

Pre-trained language models (PTLMs) have achieved impressive performance on commonsense inference benchmarks, but their ability to employ commonsense to make robust inferences, which is crucial for effective communications with humans, is debated. In the pursuit of advancing fluid human-AI communica…

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
2021

SimGAN: Hybrid Simulator Identification for Domain Adaptation via Adversarial Reinforcement Learning

ICRA 2021poster

As learning-based approaches progress towards automating robot controllers design, transferring learned policies to new domains with different dynamics (e.g. sim-to-real transfer) still demands manual effort. This paper introduces SimGAN, a framework to tackle domain adaptation by identifying a hybr…

Cited by 78SourcecodeScholar
2019

Population Based Augmentation: Efficient Learning of Augmentation Policy Schedules

ICML 2019oral

A key challenge in leveraging data augmentation for neural network training is choosing an effective augmentation policy from a large search space of candidate operations. Properly chosen augmentation policies can lead to significant generalization improvements; however, state-of-the-art approaches…