Oliver Chang
Runner, CS PhD Student, and baseball nerd - but not necessarily in that order. Multiplication need not apply.
I am interested in neural networks, statistics, and robotics. I like using R and Python for statistical analysis and Java for software engineering.
I am currently a 1st year PhD Student at UCSC, studying computer science. Outside of school, I run cross country and track & field and watch Dodger baseball.
Feel free to checkout my resume and my transcript.
Projects | Contact |
Projects
Benchmarking Policy-Gradient Methods for Deep Reinforcement Learning in High-Fidelity Autonomous Vehicles Simulators
My first PhD paper!
- Increased lane following and obstacle avoidance in a simulated self-driving car by 400 meters by applying a deep reinforcement learning algorithm that uses multiprocessing and dynamic programming, leading to faster bench marking by 3-fold.
- Improved training consistency from a correlation value of 0.18 to 0.39 by implementing a vision-based transformer and recurrent neural network, resulting in greater generalizability in PyTorch.
- Accelerated learning speed by 20% by orchestrating a Nautilus Cluster to run 6 concurrent simulators to scale up training efforts, leading faster convergence in performance stability.
- Expanded system to run on 3 additional open-source simulators by leading a team of five undergraduate students who applied my algorithms. Tasks included code-reviews, user feedback, and debugging code.
ERA vs OPS
Baseball Pitcher Comparer
In this project, I dabble with R and the Lahman package to illustrate a pitcher’s performance compared to the rest of MLB.
CS152
A Reprise on Data Science Research Circle
Fall 2020
Description: After taking computational statistics, I wanted to apply the newly learned techniques on my Data Science Research Circle Project.
Data Science Research Circle
Spring/Summer 2020
Description: Analyzed police stops in multiple U.S. cities in collaboration with Emma Godfrey (‘21), Will Gray (‘22), Amber Lee (‘22), Ethan Ong (‘21), Arm Wonghirundacha, and Ivy Yuan (‘21).
Observing mouse behavior when stimulating the MPA-vPAG Circuit
Summer 2019
Description: Ran a behavioral project on mouse. Stimulating a certain neuron in the mouse’s brain activates object craving behavior. We wanted to see if a mouse will display this craving head-fixed on a track ball.
Coding Progess
In an effort to track my software engineering skill level, I will posts my solutions to problems from Cracking the Coding Interview. The code I will post is code written in a text editor before checking if it runs correctly. This enforces that I thoroughly think about the problem and that data strcutures or algorithms I should utilize. Below each post is the solution from the textbook and a brief description of what I should have done. This page will be updated frequently, as I reattempt problems and add new problems from the book.
Contact
elochang@ucsc.edu
Santa Cruz, CA
Movie List
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