Allison Liu

Master’s thesis on using data transformations to understand precursors leading up to large solar flares.

I built a concert ukulele from raw materials! The top is redwood, the neck is walnut and redwood, and the sides and back are Indian rosewood.

A collection of some natural language processing projects I have done using Pytorch. Many of these projects were done collaboratively and summarized using Jupyter Notebooks.

In this project, we used Lindenmayer systems (L-systems) to model the fractal-like branching structure of different plant species.

I augmented solar magnetogram data using generative adversarial networks (GANs) to provide more data for solar flare prediction models.

A collection of Applied Math projects I have done throughout my undergraduate career at CU Boulder. These collaborative projects vary in topic and complexity. (Ex: Foraging Patterns in Ants, Modeling Disease Epidemics with Markov Chains)

I find the solution to a problem found in an XKCD comic involving raptors attacking a human. The goal was to find the optimal action for a human who is surrounded by three raptors positioned in an equilateral triangle. The problem appears in an XKCD comic at https://xkcd.com/135/.

This black bear was digitally modeled in Rhinoceros6 as a Non-Uniform Rational Basis Spline (NURBS) object, a smooth object created using mathematically accurate representations of curves. The object was then converted into a triangular mesh object, unrolled, and modified before it was laser cut out of cardboard and assembled.

I modified the standard Gerchberg-Saxton (GS) phase-retrieval algorithm to return more information than traditional beam-characterization methods given the same data. Other members of my lab group used the algorithm to analyze their laser beams containing orbital angular momentum (OAM), which resulted in a publication in Science Magazine.

I co-led a team of 6 students to design and build a payload for a high-altitude weather balloon to study the flux of cosmic rays throughout the atmosphere. The image above was taken by a GoPro onboard our payload!