Skip to content
View whitesungun876's full-sized avatar

Block or report whitesungun876

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.

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
whitesungun876/README.md

Hi, I'm Jieyu

I like building AI systems that remain useful beyond the demo: grounded, testable, and observable.

I'm completing an M.Sc. in IT & Cognition at the University of Copenhagen. My recent work focuses on RAG reliability, agent workflows, evaluation, guardrails, and human-centred AI. I'm looking for full-time Applied AI or AI Solutions roles in Denmark from September 2026.

Selected work

Project What I built Evidence
RAGOps Lens A production-style RAG evaluation platform with FastAPI, PostgreSQL, pgvector, Qdrant, Docker, and Azure observability. A 70-case evaluation suite; the calibrated composite gate caught all 5 no-answer cases with a 1.5% false-fallback rate.
GitHub Opportunity Miner A full-stack LangGraph agent that turns GitHub issue evidence into traceable product opportunities and validation plans. A verified live run processed 38 real GitHub items into one validated opportunity card with no pipeline errors.
GazeRAG A research framework using radiologists' gaze as interpretable anatomical priors for hybrid retrieval. Gaze-guided retrieval produced small but stable ranking improvements across evaluation settings.

Tools I use

  • Primary: Python — FastAPI, ML/LLM pipelines, retrieval, evaluation, testing
  • Working proficiency: SQL/PostgreSQL and TypeScript/JavaScript
  • Systems: Docker, Azure, CI/CD, MLflow, Application Insights

I care most about the parts that make AI systems dependable: evaluation, failure modes, evidence, and clear operational signals.

LinkedIn

Pinned Loading

  1. RAGOps-Lens RAGOps-Lens Public

    Production-style RAG evaluation platform with retriever comparison, confidence gating, SQL analytics, and Azure observability.

    Python

  2. Opportunity-Mining-Agent Opportunity-Mining-Agent Public

    Evidence-first AI agent that mines GitHub issues for validated product opportunities and buyer hypotheses.

    Python 15

  3. GazeRAG GazeRAG Public

    Research framework using radiologists' gaze as anatomical priors for hybrid RAG retrieval.

    Python