Search Results for author: Dongsoo Har

Found 21 papers, 1 papers with code

Virtual Action Actor-Critic Framework for Exploration (Student Abstract)

no code implementations6 Nov 2023 Bumgeun Park, TaeYoung Kim, Quoc-Vinh Lai-Dang, Dongsoo Har

In this paper, a novel actor-critic framework namely virtual action actor-critic (VAAC), is proposed to address the challenge of efficient exploration in RL.

Efficient Exploration Reinforcement Learning (RL)

Enhanced Transformer Architecture for Natural Language Processing

no code implementations17 Oct 2023 Woohyeon Moon, TaeYoung Kim, Bumgeun Park, Dongsoo Har

Transformer is a state-of-the-art model in the field of natural language processing (NLP).

Translation

Sensor Fusion by Spatial Encoding for Autonomous Driving

no code implementations17 Aug 2023 Quoc-Vinh Lai-Dang, Jihui Lee, Bumgeun Park, Dongsoo Har

Sensor fusion is critical to perception systems for task domains such as autonomous driving and robotics.

Autonomous Driving Sensor Fusion

Road Redesign Technique Achieving Enhanced Road Safety by Inpainting with a Diffusion Model

no code implementations15 Feb 2023 Sumit Mishra, Medhavi Mishra, TaeYoung Kim, Dongsoo Har

Image inpainting is based on inpainting safe roadway elements in a roadway image, replacing accident-prone (AP) features by using a diffusion model.

Image Inpainting

Off-Policy Reinforcement Learning with Loss Function Weighted by Temporal Difference Error

no code implementations26 Dec 2022 Bumgeun Park, TaeYoung Kim, Woohyeon Moon, Luiz Felipe Vecchietti, Dongsoo Har

We propose a novel method that introduces a weighting factor for each experience when calculating the loss function at the learning stage.

OpenAI Gym reinforcement-learning +1

Kick-motion Training with DQN in AI Soccer Environment

no code implementations1 Dec 2022 Bumgeun Park, Jihui Lee, TaeYoung Kim, Dongsoo Har

In this paper, we attempt to use the relative coordinate system (RCS) as the state for training kick-motion of robot agent, instead of using the absolute coordinate system (ACS).

Reinforcement Learning (RL)

Reinforcement Learning-Based Cooperative P2P Power Trading between DC Nanogrid Clusters with Wind and PV Energy Resources

no code implementations16 Sep 2022 Sangkeum Lee, Sarvar Hussain Nengroo, Hojun Jin, Taewook Heo, Yoonmee Doh, Chungho Lee, Dongsoo Har

Power management of nanogrid clusters with P2P power trading is simulated on a distribution test feeder in real time, and the proposed GCN-Bi-LSTM-PPO technique achieving the lowest electricity cost among the RL algorithms used for comparison reduces the electricity cost by 36. 7%, averaging over nanogrid clusters.

energy trading Management +2

Cluster-based Sampling in Hindsight Experience Replay for Robotic Tasks (Student Abstract)

no code implementations31 Aug 2022 TaeYoung Kim, Dongsoo Har

The proposed sampling strategy groups episodes with different achieved goals by using a cluster model and samples experiences in the manner of HER to create the training batch.

Clustering Multi-Goal Reinforcement Learning +1

Path Planning of Cleaning Robot with Reinforcement Learning

no code implementations17 Aug 2022 Woohyeon Moon, Bumgeun Park, Sarvar Hussain Nengroo, TaeYoung Kim, Dongsoo Har

To solve this electricity consumption issue, the problem of efficient path planning for cleaning robot has become important and many studies have been conducted.

reinforcement-learning Reinforcement Learning (RL) +1

Development of Charging, Discharging Scheduling Algorithm for Economical and Energy Efficient Operation of Multi EV Charging Station

no code implementations9 May 2022 Hojun Jin, Sangkeum Lee, Sarvar Hussain Nengroo, Dongsoo Har

For the charging station to take a microgrid (MG) structure, an economical and energy-efficient power management scheme is required for the power provision of EVs while considering the local load demand of the MG. For these purposes, this study presents the power management scheme of interdependent MG and EV fleets aided by a novel EV charg-ing/discharging scheduling algorithm.

Management Scheduling

RelMobNet: End-to-end relative camera pose estimation using a robust two-stage training

no code implementations25 Feb 2022 Praveen Kumar Rajendran, Sumit Mishra, Luiz Felipe Vecchietti, Dongsoo Har

For proving texture invariance, we investigate the generalization of the proposed method augmenting the datasets to different scene styles, as ablation studies, using generative adversarial networks.

3D Reconstruction Pose Estimation +2

Sensing accident-prone features in urban scenes for proactive driving and accident prevention

1 code implementation25 Feb 2022 Sumit Mishra, Praveen Kumar Rajendran, Luiz Felipe Vecchietti, Dongsoo Har

To avoid accidents due to missing these visual cues, this paper proposes a visual notification of AP-features to drivers based on real-time images obtained via dashcam.

Power Management of Microgrid Integrated with Electric Vehicles in Residential Parking Station

no code implementations7 Sep 2021 Hojun Jin, Sarvar Hussain Nengroo, Sangkeum Lee, Dongsoo Har

Lately, increasing number of electric vehicles (EVs) in residential parking station has become an important issue, because excessive number of EVs can destabilize the power system during peak hours with high charging power requested.

Management

Two-stage training algorithm for AI robot soccer

no code implementations13 Apr 2021 TaeYoung Kim, Luiz Felipe Vecchietti, Kyujin Choi, Sanem Sariel, Dongsoo Har

Because these two training processes are conducted in a series in every timestep, agents can learn how to maximize role rewards and team rewards simultaneously.

Multi-agent Reinforcement Learning reinforcement-learning +2

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