Sumin Im

M.S. Student, KAIST EE

Hello, I'm Sumin Im, an M.S. student in KAIST School of Electrical Engineering and a member of the Mobile Intelligence & Interaction Lab, advised by Prof. Sung-Ju Lee. I am particularly interested in LLM efficiency.

During my undergraduate years at Kyung Hee University, I worked on language and multimodal models, Korean agent evaluation, O-RAN simulation, and on-device AI products.

If technology connects people and the world, I want to stand at the center of that connection. I am interested in building AI systems that remain useful under real constraints: limited data, privacy, latency, and human context.

  • Efficient Multimodal Intelligence
  • AI Systems
  • On-device AI
  • Agent Evaluation

News

Publication

2025 / Korean Society for Geospatial Information Science

Improving Equity in Public Sports Facility Accessibility Using K-means-based Adaptive Gaussian 2SFCA and Multi-Objective Greedy Optimization

Sumin Im

2024 / Korean Institute of Information Scientists and Engineers

O-RAN and ns-O-RAN: A Study on Architecture and Interface Analysis

Sumin Im et al.

Patent Filings

2026 / Korean patent application, pending

Real-Time QR Code Threat Detection System and Method Using Context-Based On-Device AI

2026 / Korean patent application, pending

On-Device AI-Based Voice Impersonation Real-Time Detection System and Method

Timeline

Chungnam Science High School emblem.
2018

Chungnam Science High School

Scientific foundation

Built the curiosity and quantitative base that later shaped AI and systems research.
Kyung Hee University emblem.
2021

Kyung Hee University

B.S. Computer Engineering

Studied software, AI, networks, and product engineering while maintaining a 4.27 / 4.5 GPA.
Automobile Network Lab logo.
2024

Automobile Network Lab

KHU EE, advised by Prof. Haneul Ko

Researched O-RAN and 6G network systems, including ns-O-RAN simulation and AI-based conditional handover.
LinkedSpaces logo.
2025

LinkedSpaces Inc.

Silicon Valley software engineering intern

Built on-device semantic image search, POI ranking, and album intelligence for private photo systems.
Efficient Multimodal Intelligence Lab (EMIL) logo.
2026

Efficient Multimodal Intelligence Lab

KHU EMIL, advised by Prof. Sungha Choi

Researching efficient reasoning for LLMs while writing my undergraduate thesis, leading paper study groups, and preparing top-tier submissions.
MIIL logo.
2026

Mobile Intelligence & Interaction Lab

KAIST EE, advised by Prof. Sung-Ju Lee

Beginning M.S. research on efficient multimodal intelligence and human-centered AI systems.

Selected Projects

Diagram of deep-thinking layer convergence using Jensen-Shannon divergence thresholds.

Mar 2026 - Present / KHU EMIL research

Evidence-Routed Deep Thinking

Training-Free Attention Routing Diagnostics for LLM Reasoning, studying how attention routes toward evidence sources during deep thinking.Python, PyTorch, Attention Diagnostics, LLM Reasoning
Queue, Judge, and Recruiter framework for wearable time-series Health-LLM example selection.

Dec 2025 - Present / KAIST MIIL research

Personalized Health-LLM via Test-Time In-Context Learning

A metadata-guided example selection framework for personalized wearable health prediction without model fine-tuning.Python, PyTorch, LLM APIs, MOMENT, Sleep-EDF
Ko-AgentBench evaluation flow from benchmark dataset generation to answer sheets and LLM judging.

Aug 2025 - Dec 2025 / Open Source Contribution Academy

Ko-AgentBench: Korean AI Agent Evaluation Framework

A Korean agentic tool-calling benchmark for evaluating LLM tool use, reasoning, API reliability, and leaderboard reproducibility.Python, LangChain, Naver/Kakao APIs, evaluation pipeline
O-RAN service management, orchestration, RIC, O-CU, O-DU, O-RU, and O-Cloud architecture diagram.

Mar 2024 - Sep 2024 / Automobile Network Lab

AI-based Conditional Handover Optimization in 6G O-RAN

An AI xApp simulation for conditional handover decisions in O-RAN environments using radio quality indicators.Python, TensorFlow, NS-3, LSTM
Vertical federated learning fraud detection architecture with active and passive parties.

Mar 2025 - Jun 2025 / Kyung Hee University, Prof. Eui-Nam Huh

Federated Learning-based Fraud Detection with Caching Strategy

A vertical federated learning system with caching and feature sparsification for lower-cost fraud detection.TensorFlow, gRPC, Docker
BalJach self-living preparation app graphic with mobile interface.

Jan 2025 - Present / Product project

BalJach: Self-living Preparation App

A Play Store app that supports rental fraud prevention with deposit verification, room inspection, and self-living preparation flows.Flutter, Firebase, Google Cloud

Awards & Scholarships

President Award

AI MCP Hackathon Season 2

Ministry of Science and ICT, NIA

Built an AI video-to-music generation service using Model Context Protocol and placed in the top 4%.
2nd place out of 47 teams
Grand Prize

UNI-DTHON

National Software University Hackathon

Led a Flutter-based real-estate safety solution for foreign residents and won the grand prize across five universities.
1st place among 140 participants
Grand Prize

Wanted x Kyung Hee Prompton

Prompt Engineering Competition

Developed LLM prompting strategies for education and automation workflows.
1st place among 50 participants
Grand Prize

KHU'DATA DATATHON

KHUDA and Lovable, Kyung Hee University

Built Re:Zip, a data-driven housing platform with CPTED-based route scoring.
1st place out of 11 teams
Excellence Award

KHUTHON

Kyung Hee University AI Hackathon

Developed Pruning, an AI-driven agricultural optimization platform with ML inference and a FastAPI backend.
5th place out of 48 teams
Finalist

AI_TOP_100

Kakao Impact Foundation and Brain Impact

Selected as a national finalist in an AI problem-solving competition.
Top 100 out of 3,000 participants
Finalist

AWS x Codetree Programming Contest

Algorithm Competition

Recognized for algorithmic problem-solving performance.
Top 100 nationwide
Funding

Kyung Hee University Valley Start-Up

LINC 3.0 Student Entrepreneurship

Received funding and recognition for a rental fraud prevention platform.
KRW 2.5M project funding

Around the World

13 cities · 8 countries · 4 continentsHover a destination to trace the flight from Seoul.
Places Sumin Im has travelledA world map tracing flights from Seoul to Taiwan, Macau, Hong Kong, Shanghai, Japan, the United States, New Zealand, and Europe.TaipeiMacauHong KongShanghaiTokyoSapporoSan FranciscoLos AngelesLas VegasAucklandRomeZürichParisSeoul

Notion Blog

Research notes, implementation logs, and experiments stay in the same visual system.

Open Blog