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Donghyeon Lee

14 accepted papers

2025

ChroKnowledge: Unveiling Chronological Knowledge of Language Models in Multiple Domains

ICLR 2025poster

Large language models (LLMs) have brought significant changes to many aspects of our lives. However, assessing and ensuring their chronological knowledge remains challenging. Existing approaches fall short in addressing the temporal adaptability of knowledge, often relying on a fixed time-point view…

2025

DICE-BENCH: Evaluating the Tool-Use Capabilities of Large Language Models in Multi-Round, Multi-Party Dialogues

ACL 2025finding

Existing function-calling benchmarks focus on single-turn interactions. However, they overlook the complexity of real-world scenarios. To quantify how existing benchmarks address practical applications, we introduce DICE-SCORE, a metric that evaluates the dispersion of tool-related information such…

Cited by 0SourcePDFScholar
2025

ETHIC: Evaluating Large Language Models on Long-Context Tasks with High Information Coverage

NAACL 2025long

Recent advancements in large language models (LLM) capable of processing extremely long texts highlight the need for a dedicated evaluation benchmark to assess their long-context capabilities. However, existing methods, like the needle-in-a-haystack test, do not effectively assess whether these mode…

2025

From Ceilings to Walls: Universal Dynamic Perching of Quadrotors on Surfaces with Variable Orientations

ICRA 2025

This work demonstrates universal dynamic perching capabilities for quadrotors of various sizes and on surfaces with different orientations. By employing a non-dimensionalization framework and deep reinforcement learning, we systematically assessed how robot size and surface orientation affect landin

Cited by 2SourceScholar
2024

Lie Group-Based User Motion Refinement Control for Teleoperation of a Constrained Robot Arm

RA-L 2024

In unilateral teleoperation systems, robots often face challenges when performing tasks with specific geometric constraints. These constraints restrict the robot's movements to certain directions, requiring accurate control of its position and orientation. If the operator's commands do not consider

Cited by 5SourceScholar
2023

Bounded Compensation with Friction Estimation for Accurate Motion Tracking and Compliant Behavior of Industrial Manipulators

ICRA 2023poster

This paper proposes a control structure for accurate tracking and compliant behavior of industrial manipulators without additional sensors. To achieve control objectives, friction, one of the biggest causes of performance degradation, should be compensated. For tracking performance, the estimated fr…

Cited by 4SourceScholar
2022

Maximal Manipulation Framework using Quadratic Programming for a Teleoperated Robotic System with Articulated bodies

ICRA 2022poster

This paper proposes a teleoperation framework to exploit the maximum manipulation capability during teleoperation. Here, exploiting maximum manipulation capacity means that the robot moves with its maximum control input while not violating the given constraints, and it is a nonlinear optimization pr…

Cited by 4SourceScholar
2022

On the Performance and Passivity of Admittance Control with Feed-Forward Input

IROS 2022poster

This paper analyzes the effect of control param-eters of feed-forward and inner loop velocity controller in an admittance control scheme on the performance and passivity. The interaction force, inertia, and damping compensation were considered as the feed-forward input. Sufficient conditions and gui…

Cited by 7SourceScholar
2021

Safety-oriented Teleoperation Framework for Contact-rich Tasks in Hazardous Workspaces

IROS 2021poster

This paper proposes an admittance controller-based teleoperation system for contact-rich tasks. Based on the analysis of the motivating task (deposited iron lump removal task in the steel mill), the system concept is focused on the practical aspects of the system, and various components are combined…

Cited by 4SourceScholar
2020

Robust Micro-Particle Manipulation in a Microfluidic Channel Network Using Gravity-Induced Pressure Actuators

IROS 2020poster

Robust particle manipulation is a challenging but essential technique for single-cell analysis and processing of microfluidic devices. This paper proposes a micro-particle manipulation system with a microfluidic channel network. We built gravity-induced pressure actuators, which can generate high-re…

Cited by 0SourceScholar
2020

Task Space Control of Articulated Robot Near Kinematic Singularity: Forward Dynamics Approach

RA-L 2020

In this study, a forward dynamics-based control (FDC) framework is proposed for task space control of a nonredundant robot manipulator. The FDC framework utilizes forward dynamic robot simulation and an impedance controller to solve the inverse kinematics problem. For the practical use of the propos

Cited by 16SourceScholar
2019

Hierarchical Motion Segmentation Through sEMG for Continuous Lower Limb Motions

RA-L 2019

Surface electromyograms (sEMG), are records of electrical signals generated by muscles, and have long been used to indicate the motions intended by humans to enable interactions between a robot and a human. To support not only the diverse movements in human daily living but also the task of increasi

Cited by 11SourceScholar
2016

On-chip automation of sequential flow switching with serially connectable fluidic monostable multivibrator

IROS 2016poster

We propose a fluidic monostable multivibrator (fMMV) circuit, which is a new flow-switching mechanism in microfluidic chips. Flow control using parallel fMMV circuits does not require an external controller; this is a distinct advantage over various conventional micro-flow control methods. The fMMV…

Cited by 0SourceScholar