About Me

Hello! My name is Hyun Kim, a fourth-year PhD candidate in transportation at New Jersey Institute of Technology.

My research interest lies in the application of Machine Learning and Reinforcement Learning.

My dissertation topic is on the usage of Deep Reinforcement Learning to dynamically route multiple shuttles based on stochastic demand.

I also have experience in data analysis, transportation modeling, and multi-agent systems.

Experiences

Here you can find my research articles, projects, and publications.

Proximal Policy Optimization (PPO)

The surrogate clipped objective function used in PPO is given by:

$$L^{CLIP}(\theta) = \hat{\mathbb{E}}_t \left[ \min\left(r_t(\theta)\hat{A}_t,\ \text{clip}(r_t(\theta), 1 - \epsilon, 1 + \epsilon)\hat{A}_t\right) \right]$$

Travel Photos

A collection of my favorite landscape and travel photos.

Fukuoka, Japan

Kokutai-doro Ave., Fukuoka, Japan Ohori Park, Fukuoka, Japan

Ulleungdo, South Korea

Daepunggam Cliff, Ulleungdo, South Korea Daepunggam Cliff, Ulleungdo, South Korea Port Dodong, Ulleungdo, South Korea Gwaneumdo, Ulleungdo, South Korea

Bucclech Park in New Brunswick, New Jersey

Bucclech Park in New Brunswick, New Jersey Bucclech Park in New Brunswick, New Jersey