Search Results for author: Dana Kulić

Found 14 papers, 9 papers with code

Partial Observability during DRL for Robot Control

1 code implementation12 Sep 2022 Lingheng Meng, Rob Gorbet, Dana Kulić

Deep Reinforcement Learning (DRL) has made tremendous advances in both simulated and real-world robot control tasks in recent years.

Natural Language Communication with a Teachable Agent

no code implementations17 Mar 2022 Rachel Love, Edith Law, Philip R. Cohen, Dana Kulić

The results indicate that teaching via paraphrasing and text input has a positive effect on learning outcomes for the material covered, and also on aspects of affective engagement.

Memory-based Deep Reinforcement Learning for POMDPs

1 code implementation24 Feb 2021 Lingheng Meng, Rob Gorbet, Dana Kulić

A promising characteristic of Deep Reinforcement Learning (DRL) is its capability to learn optimal policy in an end-to-end manner without relying on feature engineering.

Feature Engineering reinforcement-learning +1

Fast Approximate Multi-output Gaussian Processes

1 code implementation22 Aug 2020 Vladimir Joukov, Dana Kulić

Training with the proposed approach requires computing only a $N \times n$ eigenfunction matrix and a $n \times n$ inverse where $n$ is a selected number of eigenvalues.

Gaussian Processes Hyperparameter Optimization +1

Learning from Sparse Demonstrations

2 code implementations5 Aug 2020 Wanxin Jin, Todd D. Murphey, Dana Kulić, Neta Ezer, Shaoshuai Mou

The time stamps of the keyframes can be different from the time of the robot's actual execution.

Motion Planning

The Effect of Multi-step Methods on Overestimation in Deep Reinforcement Learning

no code implementations23 Jun 2020 Lingheng Meng, Rob Gorbet, Dana Kulić

Recently, research in Deep Reinforcement Learning (DRL) also shows that multi-step methods improve learning speed and final performance in applications where the value-function and policy are represented with deep neural networks.

reinforcement-learning Reinforcement Learning (RL)

Supportive Actions for Manipulation in Human-Robot Coworker Teams

no code implementations2 May 2020 Shray Bansal, Rhys Newbury, Wesley Chan, Akansel Cosgun, Aimee Allen, Dana Kulić, Tom Drummond, Charles Isbell

We compare two robot modes in a shared table pick-and-place task: (1) Task-oriented: the robot only takes actions to further its own task objective and (2) Supportive: the robot sometimes prefers supportive actions to task-oriented ones when they reduce future goal-conflicts.

A Multi-layer Gaussian Process for Motor Symptom Estimation in People with Parkinson's Disease

no code implementations31 Aug 2018 Muriel Lang, Franz M. J. Pfister, Jakob Fröhner, Kian Abedinpour, Daniel Pichler, Urban Fietzek, Terry T. Um, Dana Kulić, Satoshi Endo, Sandra Hirche

The assessment of Parkinson's disease (PD) poses a significant challenge as it is influenced by various factors which lead to a complex and fluctuating symptom manifestation.

Management

Stable Gaussian Process based Tracking Control of Euler-Lagrange Systems

1 code implementation19 Jun 2018 Thomas Beckers, Dana Kulić, Sandra Hirche

The model fidelity is used to adapt the feedback gains allowing low feedback gains in state space regions of high model confidence.

Inverse Optimal Control with Incomplete Observations

2 code implementations21 Mar 2018 Wanxin Jin, Dana Kulić, Shaoshuai Mou, Sandra Hirche

We handle the problem by proposing the recovery matrix, which establishes a relationship between available observations of the trajectory and weights of given candidate features.

Robotics Systems and Control

Data Augmentation of Wearable Sensor Data for Parkinson's Disease Monitoring using Convolutional Neural Networks

2 code implementations2 Jun 2017 Terry Taewoong Um, Franz Michael Josef Pfister, Daniel Pichler, Satoshi Endo, Muriel Lang, Sandra Hirche, Urban Fietzek, Dana Kulić

While convolutional neural networks (CNNs) have been successfully applied to many challenging classification applications, they typically require large datasets for training.

Classification Data Augmentation +1

Exercise Motion Classification from Large-Scale Wearable Sensor Data Using Convolutional Neural Networks

no code implementations22 Oct 2016 Terry Taewoong Um, Vahid Babakeshizadeh, Dana Kulić

The ability to accurately identify human activities is essential for developing automatic rehabilitation and sports training systems.

General Classification Time Series +1

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