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정지현 교수

Ji-Hyeon Jeong

한양대학교 국제학부 · 컴퓨터과학

연구실 소개

정지현 교수의 연구실은 고성능 수치해석과 병렬 컴퓨팅을 기반으로 한 실시간 시뮬레이션 기술을 핵심으로 하며, 기계 동역학, 유한요소 해석, 그리고 다중 코어 및 GPU 기반 최적화 기법을 적용한 고성능 시뮬레이션 소프트웨어 개발에 주력하고 있습니다. 특히, 복잡한 다물체 시스템과 지반 접촉을 고려한 실시간 차량 동역학 해석, 그리고 LLM 기반 지능형 에이gent의 행동 편향 문제인 '메모리 유도 도구 이탈'(tool-drift)을 분석하고 측정하는 데에도 기여하고 있습니다. 연구는 실생활 응용에 초점을 맞추어, 공학적 시뮬레이션의 정밀도와 실시간 성능을 동시에 확보하는 데 목적이 있습니다.

실시간 시뮬레이션고성능 병렬 계산유한요소 해석LLM 에이전트도메인 특화 메모리 편향

연구 현황

논문 수
6
총 인용 수
6
최근 5년 논문
6
주요 분야
컴퓨터과학

연구 성과 추이

표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.

5개년 연도별 논문 게재 수
6총합
2011
2015
2017
2025
2026
5개년 연도별 피인용 수
6총합
20112015201720252026

주요 논문

6
1
논문|인용수 3·2015
Optimization of operating and assembling mass properties of solid elements on heterogeneous platforms using OpenCL framework
정지현, 배대성

Model sizes have increased significantly in the fields of engineering and scientific computation. Some additional computing devicessuch as GPU, accelerators and co-processors have been applied to improve the computation performance. This paper presents severalstrategies to optimize the computation performance. The first strategy is to combine a computation unit with multiple of 4-tetrahedrons tosupport AVX vectorization. The second strategy is to utilize a GPU device. Several techniques are prop

2
논문|인용수 3·2025
Together or Apart: Designing Boundaries for Personal Intelligent Agents
Hyunmin Kang, Seul Chan Lee, JiHyun Jeong, Hyo Chang Kim, Minchul Cha, Myounghoon Jeon
OA

Personal intelligent agents (IAs) are increasingly embedded in everyday life, a trend accelerated by generative AI technologies. Despite their growing presence, these agents often remain fragmented across different life domains and environments. This workshop explores how to design integrated IA ecosystems emphasizing continuity, coordination, and human-centered values. Participants with varied perspectives will collaboratively develop frameworks, scenarios, and guidelines for cohesive personal

Social PsychologyPsychology
3
논문|인용수 0·2017
An implementation of direct linear equation solver using a many-core CPU for mechanical dynamic analysis
정지현, 배대성

This research proposes an effective implementation of linear equation solver for an implicit integration on a many-core CPU. Although this implementation is applied to a flexible body simulation in mechanical dynamics, it could be also utilized in a wide range of other fields. BFS-based nested dissection and its numerical factorization enables adaptive control of setting operational range as well as positive parallelization compared with traditional DFS-based nested dissection. It brings better

4
논문|인용수 0·2026
Memory-Induced Tool-Drift in LLM Agents
Mahavir Dabas, JiHyun Jeong, Ming Jin, Ruoxi Jia
arXiv (Cornell University)OA

Modern LLM agents combine long-term memory for personalization with tool-calling interfaces for taking actions in the world -- a combination underpinning contemporary production systems. We study a previously unexamined failure of this combination: when personality-driven biases stored in memory (cost-consciousness, impatience, risk tolerance, etc.) silently affect tool calls in contexts where they are not applicable. We call this memory-induced tool-drift and operationalize it through MEMDRIFT,

Artificial IntelligenceComputer Science
5
preprint|인용수 0·2026
Memory-Induced Tool-Drift in LLM Agents
Mahavir Dabas, JiHyun Jeong, Ming Jin, Ruoxi Jia
arXiv (Cornell University)OA

Modern LLM agents combine long-term memory for personalization with tool-calling interfaces for taking actions in the world -- a combination underpinning contemporary production systems. We study a previously unexamined failure of this combination: when personality-driven biases stored in memory (cost-consciousness, impatience, risk tolerance, etc.) silently affect tool calls in contexts where they are not applicable. We call this memory-induced tool-drift and operationalize it through MEMDRIFT,

Artificial IntelligenceComputer Science
6
논문|인용수 0·2011
연약지반을 고려한 차량 실시간 시뮬레이터 개발
홍섭, 김형우, 조윤성, 조희제, 정지현, 배대성
한국해양공학회지

A realtime simulator using an explicit integration method is introduced to improve the solving performance for the dynamic analysis of a wheeled vehicle. Because a full vehicle system has many parts, the development of a numerical technique for multiple d.o.f. and ground contacts has been required to achieve a realtime dynamics analysis. This study proposes an efficient realtime solving technique that considers the wheeled vehicle dynamics behavior with full degrees of freedom and wheel contact

대표 연구 분야

Artificial IntelligenceSocial Psychology

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