Joowan Chae

I am an undergraduate student at Sungkyunkwan University interested in language models, retrieval-augmented generation, preference optimization,autonomous data agents. I use this blog to organize paper reviews, math notes, and implementation-oriented study logs.

Research Interests

  • Retrieval-augmented generation and semantic search
  • Reasoning agents for structured data analysis
  • Embedding models and contrastive learning
  • LLM alignment and preference optimization
  • Reinforcement Learning
  • Multimodal reasoning for planning and control
  • Vision-Language-Action (VLA) models and embodied AI

Currently Studying About

  • Foundation model architectures and pre-training
  • LLM reasoning, ReAct-style workflows, and verification
  • Machine learning fundamentals and mathematical intuition
  • Course notes from operating systems, networks, and ML

Recent Posts

BOJ 1167 트리의 지름

1 minute read

접근 방법 인터넷 검색을 하니까 트리의 지름은 특이한 성질은 가진다고 한다. 임의의 점에서 제일 멀리 있는 노드는 무조건 트리 지름을 구성하는 끝 점 중 하나라고 한다. 따라서 dijkstra를 한번 하여 한 끝점을 구하고 그 끝점에서 dijkstra를 또 해서 지름을 구하였다.