Skip to content
View Yumin-Hwang046's full-sized avatar
🏠
Working from home
🏠
Working from home
  • South Korea
  • 11:30 (UTC -12:00)

Block or report Yumin-Hwang046

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Content in all repositories owned by your account will be closed.
Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
Yumin-Hwang046/README.md

Hi, I'm Yumin Hwang 👋

Aspiring LLM Engineer focused on making LLM systems measurably better: retrieval quality, evaluation, and reliability.

I like to build the evaluation first, then iterate until the numbers move.

Featured Projects

QA system over 100 public-sector RFP PDFs (~7,500 pages): text, table, and GPT-Vision image parsing, with a hybrid Dense + BM25 retriever.

  • Audited my own team's evaluation after the project: found that the "Advanced" run reused the Naive index (so table/image parsing was never measured), along with grader false positives and an uncapped-MRR artifact
  • Now running a clean ablation (hybrid → +tables → +images), scored per question type
  • Wrote ~79% of the final codebase in a 5-person team

LangChain FAISS BM25 OpenAI Streamlit

Generative-AI platform that turns a restaurant's food photo into Instagram-ready ad images and copy, then uploads them automatically.

  • PM and model lead in a 4-person team; top contributor (117 commits)
  • Built the image-generation pipeline: style-reference generation and mask-based background replacement

PyTorch FastAPI Next.js MySQL

Graph-theoretic study of the real YouTube network (SNAP data) against Erdős–Rényi, Barabási–Albert, and Watts–Strogatz models.

NetworkX pandas NumPy

Tech Stack

LLM / ML · LangChain, OpenAI API, Gemini API, FAISS, PyTorch, Hugging Face Backend / Web · Python, FastAPI, TypeScript, Next.js, React, MySQL Tools · Git, Docker, Jupyter, Streamlit

Contact

📧 hwangyumin046@gmail.com · 💼 LinkedIn

Pinned Loading

  1. Team4_ImgGeneration_Project Team4_ImgGeneration_Project Public

    생성형 AI 기반 소상공인 광고 콘텐츠 자동 생성 플랫폼

    TypeScript

  2. rfp-advanced-rag rfp-advanced-rag Public

    공공기관 RFP PDF 100개(약 7,500p) 기반 Advanced RAG 질의응답 시스템 — Hybrid Retriever · LLM-as-a-Judge 평가 (5인 팀 프로젝트)

    Jupyter Notebook

  3. youtube-network-topology-analysis youtube-network-topology-analysis Public

    Analysis of YouTube network structure using graph theory and real-world SNAP data. Examines whether the network exhibits properties of scale-free (BA) or small-world (WS) models through empirical m…

    Jupyter Notebook