Donghyeon Kim
Research Interests
Keywords: Medical AI, Conversational AI, Clinical NLP, MLOps, Applied AI Systems
Objective: Applied AI researcher and engineer focused on turning conversational AI and clinical AI work into reliable systems through modeling, evaluation, and practical delivery.
Education
Gachon University
M.S. in Artificial Intelligence
GPA 4.14/4.5. Intelligent Data Analytics Lab. Advisor - OkRan Jeong. Focused on clinical AI, evaluation, and implementation-oriented research delivery.
Gachon University
B.S. in Software
Gained leadership and community management experience by participating in an official programming club and leading various study groups, including basic ML, advanced ML, financial ML, and GNN.
Research Experience
Intelligent Data Analytics Lab., Gachon University
Graduate Researcher
- Led graduate research on EMR-based nursing surveillance decision support and diagnostic classification.
- Built end-to-end modeling pipelines using KM-BERT ensembles, XGBoost, and both structured and text data.
- Explored conversational AI topics, including empathetic dialogue generation with AI-based feedback.
National Research Foundation of Korea (NRF)
Research Project Participant
- Contributed to an NRF-funded clinical AI project centered on nursing surveillance decision support using EMR data.
- Implemented workflows for clinical text understanding, including keyword extraction, dependency parsing-based preprocessing, topic modeling, and similarity analysis.
- Provided interpretable results and web-based analysis interfaces for collaborative researchers.
- Achieved 92%+ diagnostic prediction accuracy in a multi-label task by ensembling text and structured data models (KM-BERT, XGBoost).
Institute of Information & Communications Technology Planning & Evaluation (IITP)
Research Project Participant
- Implemented evaluation-related code in a human-centered multimodal AI project.
- Bridged evaluation requirements with actual code and reviewable deliverables.
dktechin
Industry-led Intensive Program Trainee
- Participated in an industry-led intensive program focused on cloud, CI/CD, security, and DevOps practices.
- Contributed to implementation tasks with a focus on security and DevOps roles in project-based training.
Gachon University / Notion Community Program
Student Leader and Community Organizer
- Held multiple leadership roles in the official university programming club and served as president in 2022.
- Planned and led study groups on machine learning, big data, financial ML, and GNNs.
- Supported campus learning communities and resource sharing as part of the Notion Campus Leader program (24-2 ~ 25-1).
Publications
- Kim, Donghyeon; Kim, Daeho; Jeong, Okran , A Context-Adaptive Gated Embedding Framework for Advanced Clinical Decision-Making
- Kim, Donghyeon; Kim, Daeho; Kim, Seyoung; Jeong, Okran , Deep Learning based Automatic ICD Coding for Nursing Surveillance of Abdominal Surgery Patients
- Joo, Yongwan; Lim, Donghyun; Kim, Donghyeon; Sun, Seungyeon; Jeong, Okran , Empathetic Dialogue Generation Model Using Reinforcement Learning with AI-Based Feedback
Selected Projects
EMR-Based Nursing Surveillance for Automatic ICD Coding
Clinical AI Research
- Nursing surveillance required diagnosis-related classification, but key clinical signals were fragmented across heterogeneous EMR sources.
- I integrated structured EMR features and nursing text, then used a dual KM-BERT, PCA, and XGBoost stacking architecture for ICD prediction.
- The final model achieved 0.9245 accuracy and strong rare-class recall without depending on physician-centered post-hoc documents.
0.9245 Accuracy · 0.9157 Weighted F1 · Strong Rare-class Recall
Dalkom Shop: Internal Employee Mileage Commerce Platform
Internal Commerce Platform
- The project needed more than frontend and backend implementation; it required cloud infrastructure and platform foundations that could reliably support search, notifications, admin workflows, and ongoing operations.
- I focused on the DevSecOps and infrastructure/platform layer, organizing CI/CD, cloud deployment flow, operational setup, and security-aware service foundations for a React + Spring commerce system.
- The project demonstrated how infrastructure and platform engineering directly shape the reliability and readiness of a production-style internal commerce service.
Internal Commerce Operations · CI/CD and Cloud Infrastructure · Security and Observability
Devridge: LLM-Based Feedback Bridge for Developers
LLM Application Prototype
- Developers working alone often need UI, performance, or code quality feedback, but they rarely have an easy way to gather role-specific input at the right time.
- I framed the service as a role-aware feedback bridge and focused on role constraints, and contextual input design so the generated responses would stay relevant and scoped.
- The prototype demonstrated how structured prompting and role-specific constraints could turn LLM output into more useful, contextualized project feedback.
Hackathon Prototype · Role-Constrained Prompts · Contextual Feedback
BloGeek: AI Modules for a React + Spring Blog Project
Collaborative NLP Project
- The product needed ML components that could classify emotional polarity and generate stylistic variations of text to support richer blog content workflows.
- I focused on the machine learning side by implementing a KoBERT-based polarity recognition model and a KoBART-based style transfer pipeline, along with dataset handling and repeated model experiments.
- The project gave the team practical AIs for blog-oriented text processing and strengthened my experience in integrating classification and generation models into a web product context.
Polarity Recognition · Style Transfer · Web AI Contribution
FRIMO: Conversational AI for Emotional Support and Diary Generation
Conversational AI Project
- The product needed ML components that could recognize user emotion and support a diary-generation workflow from daily conversation logs.
- I focused on the ML side by implementing and refining the emotion recognition and by helping connect chatbot and summarization models into the overall AI workflow.
- The project delivered an MVP-level conversational diary experience and gave me hands-on experience in integrating Korean NLP models for emotion-aware user interaction.
Emotion Recognition · Korean NLP Pipeline · MVP Contribution
Training & Certifications
Practical Implementation of Monitoring and Testing in DevOps Environments
LLOYDK
Completed practical training in Elastic-based DevOps monitoring and testing.
Multi Cloud Orchestration Program
5Works
Completed HashiCorp-based multi-cloud orchestration and IaC training.
Company-Led Intensive Project Training
DK Techin
Participated in industry-linked practical training focused on security and DevOps engineering.
Micro Degree in Software Specialist Training
Gachon University
Completed a micro-degree program for training software specialists.
Additional Information
Tech Stack: Python · PyTorch · HuggingFace · Docker · AWS
Focus Areas: Medical AI · Conversational AI · MLOps
Technical Strengths: NLP Modeling · EMR Text Workflows · Code Reproducibility · System Observability · Automation