## Breadcrumb

- Home
- Events
- AMCS Seminars

# AMCS Seminars

## Upcoming Seminars

There are currently no events to display.

## Past Seminars

### Colloquium - On Feature Learning in Neural Networks: Emergence from Inputs and Advantage over Fixed Features

Friday, October 15, 2021 4:00pm to 5:00pm

Virtual

Speaker
Yingyu Liang
Abstract
An important characteristic of neural networks is their ability to learn representations of the input data with effective features for prediction, which is believed to be a key factor to their superior empirical performance. To better understand the source and benefit of feature learning in neural networks, we consider learning problems motivated by practical data, where the labels are determined by a set of class relevant patterns and the inputs are generated…

### GAUSS Seminar: Puzzles, Ice, & Grothendieck Polynomials [hybrid]

Tuesday, October 5, 2021 3:30pm to 4:20pm

Schaeffer Hall

Abstract
We introduce quivers, path algebras and their representations. Then, in the case when our ground field is algebraically closed, we discuss a particular Morita invariant of path algebras arising from finite quivers, the Ext quiver of the category. Through examples we see how to compute the Ext quiver using quiver representations and techniques from linear algebra. We aim to keep the talk accessible to undergraduate and graduate students alike.
Speaker
Ryan Bianconi UI Mathematics PhD…

### GAUSS Seminar: Puzzles, Ice, & Grothendieck Polynomials

Tuesday, September 21, 2021 3:30pm to 4:20pm

Schaeffer Hall

Abstract
From a summer REU at the University of Minnesota, we constructed a solvable lattice model for the dual weak symmetric Grothendieck polynomials in hopes of using such a model to prove related properties of these polynomials, including Cauchy identities and branching rules. We also considered a similar lattice model construction for the weak symmetric Grothendieck polynomials in hopes of proving a Cauchy identity, concluding with a negative result. Moreover, we expand on previous work…

### GAUSS Seminar: Rotation Symmetric Boolean Functions and its Matrix

Tuesday, September 14, 2021 3:30pm to 4:20pm

Schaeffer Hall

Abstract
Digital signatures are an important feature in any encryption/decryption scheme, as it provides a message with integrity, authenticity, and nonrepudiation. The problem occurs when long messages are being exchanged and signatures that are just as long need to be verified. By using hash functions, a ”fingerprint” of the message can be used instead of the message itself for verification, making the process computationally inexpensive. If we consider a single iteration of a general…

### Colloquium - Diderot: A Parallel Domain-Specific Language for Image Analysis and Visualization

Friday, September 10, 2021 4:00pm to 5:00pm

MacLean Hall

Speaker
John Reppy
Abstract
The analysis of structure in three-dimensional images is increasingly valuable for biomedical research and computational science. At the same time, the computational burden of processing images is increasing as devices produce images of higher resolution (e.g., typical CT scans have gone from 128^3 to roughly 512^3 resolutions). With the latest scanning technologies, it is also more common for the values measured at each sample to be multi-dimensional rather…

### GAUSS Seminar: Mathematics and Redistricting

Tuesday, September 7, 2021 3:30pm to 4:20pm

Schaeffer Hall

What we know, what we don't, and where we're going
Every ten years, the Census Bureau conducts the Census, a nation-wide tallying of every single individual living in the United States. In addition to helping governments and researchers manage land, understand population trends, and distribute resources, the Census is essential to a key democratic function: drawing electoral districts. The process of drawing electoral districts, called “redistricting,” divides every state in the United States…

### AMCS Seminar

Friday, February 19, 2021 3:30pm to 4:20pm

MacLean Hall

Topic: Multi-scale methods in quantum field theory
Speaker: Wayne Polyzou, Dept. of Physics & Astronomy

### AMCS Seminar

Friday, February 12, 2021 3:30pm to 4:30pm

MacLean Hall

Topic: Harmonic analysis, fractals, and applications
Speaker: Palle Jorgensen