Navigation bar avatar

Ki-Ung Song

Problem Solver with AI and Mathematics Who Wants to Change the World
Seoul, South Korea

Featured Updates

January 28, 2026

Preliminaries for Computational Simulation

Post

August 11, 2024

Neural Solver Towards Future of Simulation: Deep Dive

Post

Since May 2023

LLM4Finance

Project

Tags

See All >>

Experience

Click for complete list.

Work Experience

Nota AI

AI Research Engineer

Jul 2024 - Current

Advancing AI for real-world, on-device applications.

  • Developing VLM applications for edge devices to address practical challenges.
  • Working on model compression techniques to enhance AI efficiency and deployment.

Deargen Inc.

AI Scientist

Sep 2022 - Jun 2024

Developed AI models for drug discovery to advance healthcare.

  • Designed a representation learning framework for molecules of various scales, embedding small molecules to proteins in a unified space.
  • Built a controllable molecular generation model using diffusion models, conditioned on protein properties.
  • Identified and addressed modality imbalance in molecular interaction prediction via a multimodal-mixing approach.

Project Experience

Personal Projects

Deepest: SNU Deep Learning Society

NCIA Lab

Growth Hackers: Business Data Analysts

Greenhouse Gas and Energy Management Center

Student Worker

Jan 2020 - Aug 2020
  • Managed and visualized SNU’s greenhouse gas and energy data using R.
  • Improved data workflow and established visual baselines to track energy trends and detect anomalies.
  • Gained hands-on experience with real-world data management.

Research Experience

Current Work

Research Topics in Interest
  • Efficient LLM & VLM
    • To make LLMs and VLMs more efficient via compression and pruning.
  • DL for Simulation
    • To accelerate the process of simluation-based science and engineering via DL.

Past Work

Researched Topics
  • DL for Drug Discovery
    Sep 2022 - Jun 2024
    • Representation learning to handle various scale of molecules universally.
    • Ligand generation using diffusion models for protein target pockets.
    • Multimodal model for predicting protein-ligand binding affinity.

During M.S.

Sep 2020 - Aug 2022
Researched Topics
  • Neural Tangent Kernels (NTKs) and DL theories
    • NTK arises in the infinite-width limit of neural networks, simplifying DL models to a linearized form under certain conditions.
    • The trend toward larger NNs has driven research on initialization and training in wide networks, leading to the infinite-width assumption for analyzing their dynamics.
    • Modern overparameterized DL models can be analyzed via NTK in the infinite-width limit as feature dimensions increase.

  • Generative Models (Diffusion and Schrödinger Bridge models)
    • Diffusion models have demonstrated state-of-the-art performance across various domains.
    • Schrödinger Bridge (SB) models, based on entropy-regularized optimal transport, generalize diffusion models.

During B.S.

Mar 2016 - Aug 2020
Undergraduate Research Internship
  • Topic : Theoretical Background on the Convergence of Optimizers Used in Deep Learning
    Mar 2020 - Aug 2020

  • Topic : Exploring the Mathematical Background Related to Machine Learning(Reinforcement Learning)
    Jun 2019 - Aug 2019

Academic Experience

During M.S.

Sep 2020 - Aug 2022
Key Courses
  • Machine Learning for Visual Understanding
    • Team Project: Image Deblurring with Generative Diffusion Process
  • Practical Application Research of IoT·AI·Big Data
    • Personal Project: Various GANs and its Application(Face Aging)
  • Mathematical Algorithm
  • Numerical Analysis

During B.S.

Mar 2016 - Aug 2020
Key Courses
  • Mathematical Modeling and Computational Experiments
    • Team Project: Text Detection based on YOLO v3
  • Combinatorial Optimization
  • Linear and Non-linear Optimization
  • Operation Research

Continual Learning

A journey of continuous growth.
Textbooks
  • [Sumio Watanabe] Algebraic Geometry and Statistical Learning Theory
  • [Cuturi] Computational Optimal Transport
  • [Kevin Murphy] Probabilistic Machine Learning
  • [de Berg] Computational Geometry
  • [S. Boyd] Convex optimization
Open Courses
  • CS224W: Machine Learning with Graphs by Stanford University
  • CS329S: Machine Learning Systems Design by Stanford University
  • CS231n: Convolutional Neural Networks for Visual Recognition by Stanford University

Teaching Experience

Teaching Assistant (TA)

  • Elementary Mathematical Analysis
    Spring 2022
  • Linear Algebra
    Spring 2022 / Fall 2021
  • Calculus
    Fall 2021 / Spring 2021 / Fall 2020

Featured Updates

January 28, 2026

Preliminaries for Computational Simulation

Post

August 11, 2024

Neural Solver Towards Future of Simulation: Deep Dive

Post

Since May 2023

LLM4Finance

Project

Tags

See All >>