Applied AI Portfolio

Data & Applied AI Engineer

A portfolio of implemented work across data structure, AI development workflows, and NLP/LLM evaluation.

I organize structured, text, image, and graph data into model-usable forms, then connect experimentation, evaluation, deployment, and review decisions into implemented work.

Data SystemsAI-DLC / MLOpsNLP / LLM
Review Router

Start with the right review path

Different reviewers need different first evidence, so the site routes by review task.

Recruiting Review

Need role fit and official record first?

Experience, publications, selected work

Technical Review

Need problems, decisions, architecture, and outcomes?

Case comparison, architecture, artifacts

Research Review

Need modeling and evaluation judgment first?

Contribution type, linked projects, evaluation judgment

Projects

Representative projects

Start with work that shows data structure, AI development workflow, and NLP/LLM evaluation judgment.

Data Systems

Lynxes: Graph Analytics Engine

Existing Python graph libraries and generic dataframe wrappers often struggle to combine memory efficiency, traversal performance, and lazy query optimization for large graph analytics.

What to check
Evidence for inspecting data structure and graph-native judgment first.
Availability
Built project / Public
Open project
AI-DLC / MLOps

Contexta: Local-First ML Observability

ML experiments and deployment work often scatter metadata, records, and artifacts across tools, making reproducible local observability hard to maintain.

What to check
Evidence for reviewing reproducible, observable AI workflow decisions.
Availability
Built project / Public
Open project
NLP / LLM

BloGeek: AI Modules for a React + Spring Blog Project

The product needed ML components that could classify emotional polarity and generate stylistic variations of text to support richer blog content workflows.

What to check
Evidence for checking how NLP/LLM modeling and evaluation judgment turns into implementation.
Availability
Built project / Summary available
Open project
Career Snapshot

Experience across research and implementation

2024.03 - 2026.02

Graduate Researcher

Intelligent Data Analytics Lab., Gachon University

Led graduate research on EMR-based nursing surveillance decision support and diagnostic classification.

2024.03 - 2025.12

Research Project Participant

National Research Foundation of Korea (NRF)

Contributed to an NRF-funded clinical AI project centered on nursing surveillance decision support using EMR data.

2025.09 - 2025.12

Research Project Participant

Institute of Information & Communications Technology Planning & Evaluation (IITP)

Implemented evaluation-related code in a human-centered multimodal AI project.

Focus Areas

Three technical focus areas

Data Systems Specialist with Graph-native Depth

Shapes structured, text, image, and graph-shaped data into representations that can move into modeling and operations, with graph-native modeling and infrastructure as the deepest specialization.

Turns heterogeneous data into model-ready and system-ready structures, pipelines, and graph representations.

Heterogeneous DataGraph-native ModelingPipeline-ready RepresentationData Infrastructure

AI-DLC and Operational MLOps Engineer

Connects experiment, training, evaluation, deployment, inference, observability, and recovery through the AI-Driven Development Life Cycle.

Makes run records, artifacts, model behavior, and feedback paths inspectable enough to improve.

Experiment RecordsObservabilityCI/CD and CTRecovery Flow

Applied NLP and LLM Research Engineer

Uses NLP/LLM research experience for modeling, evaluation design, alignment awareness, and applied system judgment.

Translates language-model research into better modeling and evaluation decisions in applied systems.

ModelingEvaluation DesignAlignment AwarenessResearch-to-System
Quick Paths

Open the right surface for the review task

Portfolio

A Problem-Solving Portfolio

Review how each project frames a problem, chooses a structure, and turns the decision into implementation.

Open Portfolio
Resume

A Resume Designed for Quick Review

Review education, experience, publications, and projects in a conventional document format.

Open CV/Resume
Research Bridge

Research strengthens implementation judgment

Journal Paper 2026

Mathematics (submitted)

A Context-Adaptive Gated Embedding Framework for Advanced Clinical Decision-Making

Focus modeling Portfolio relevance

Shows modeling judgment that connects diagnostic context and time-series signals hierarchically instead of treating data surfaces as isolated inputs.

Keywords
Clinical Decision Support SystemAutomated ICD Coding +7
Journal Paper 2025

Journal of The Korea Society of Computer and Information

Deep Learning based Automatic ICD Coding for Nursing Surveillance of Abdominal Surgery Patients

Focus evaluation Portfolio relevance

Supports the portfolio claim that NLP/LLM systems should be judged through domain data structure and error distribution, not only headline accuracy.

Keywords
Medical AINursing Surveillance +7
Conference Paper 2025

Korea Computer Congress (KCC)

Empathetic Dialogue Generation Model Using Reinforcement Learning with AI-Based Feedback

Focus alignment Portfolio relevance

Supports the view that LLM response quality should be treated as an evaluation, reward, and policy-update system rather than a prompt-only outcome.

Keywords
Empathetic DialogueReinforcement Learning +6