**ORGANIZERS:** SOLOMON QUINN**, **CCAM PhD Student, YUEHAW KHOO Assistant Professor, CCAM, Statistics, and the College

**TIME AND VENUE:** Tuesdays from 2:00-3:00 PM, in Jones 303, 5747 South Ellis Avenue (unless otherwise indicated in **BOLD**).

**NOTE:** For further information and inquiries about building access for persons with disabilities, please email Zellencia Harris at zellenciah@uchicago.edu. If you wish to subscribe to our listserv, please visit the following website: https://lists.uchicago.edu/web/subscribe/cam_colloquium.

## WINTER QUARTER 2019

### JANUARY

### TUESDAY, January 21, 2020, at 3:30 PM, in **SHFE 203, 5757 South University Avenue**

ZEHUA LAI, Computational and Applied Mathematics, University of Chicago

**"Random Sampling, Matrix AM-GM Inequality, and Noncommutatitve Positivstellensatz"**

### FEBRUARY

### TUESDAY, February 4, 2020, at 2:00 PM, in Jones 303, 5747 South Ellis Avenue

RICHARD ZHU, Computational and Applied Mathematics, University of Chicago

**"Deep Neural Networks as Gaussian Processes"**

### TUESDAY, February 18, 2020, at 2:00 PM, in Jones 303, 5747 South Ellis Avenue

ZHEN DAI, Computational and Applied Mathematics, University of Chicago

**"Implicit Regularization in Neural Networks"**

### MARCH

### TUESDAY, March 3, 2020, at 2:00 PM, in Jones 303, 5747 South Ellis Avenue

YIAN CHEN, Computational and Applied Mathematics, University of Chicago

**"Scalable Gaussian Process Regression for Physics-based Covariance Models"**

### TUESDAY, March 10, 2020, at 2:00 PM, in Jones 303, 5747 South Ellis Avenue

DANIEL XIANG, Department of Statistics, University of Chicago

**"Delete and Repair for Graphs"**

### PAST SEMINARS

AUTUMN QUARTER 2019

ORGANIZERS

DANIEL SANZ-ALONSO**, **Assistant Professor, Department of Statistics

SOLOMON QUINN, PhD Candidate, CCAM

OCTOBER

TUESDAY, October 22, 2019, at 4:00 PM, in Cobb 104, 5811 South Ellis Avenue

JUSTIN FINKEL, Computational and Applied Mathematics, University of Chicago

"Data-driven Optimization of an Ocean Turbulence Model"

TUESDAY, October 29, 2019, at 4:00 PM, in Cobb 104, 5811 South Ellis Avenue

RUIYI YANG, Computational and Applied Mathematics, University of Chicago

"Graph-based Learning"

TUESDAY, November 5, 2019, at 4:00 PM, in Cobb 104, 5811 South Ellis Avenue

SOLOMON QUINN, Computational and Applied Mathematics, University of Chicago

"Numerical Methods for the Dirac System"

TUESDAY, November 12, 2019, at 4:00 PM, in Cobb 104, 5811 South Ellis Avenue

ZHISHENG XIAO, Computational and Applied Mathematics, University of Chicago

"Limitation of Deterministic Update Orders in ADMM and CD"

TUESDAY, November 19, 2019, at 4:00 PM, in Cobb 104, 5811 South Ellis Avenue

YUMING CHEN, Computational and Applied Mathematics, University of Chicago

"__Data Driven Techniques in Inverse Problems__"

WEDNESDAY, December 4, 2019, at 4:30 PM, in Jones 308, 5747 South Ellis Avenue

AARON CHEN, Computational and Applied Mathematics, University of Chicago

"Topology, complexity, and neural codes"

SPRING QUARTER 2019

ORGANIZERS

DANIEL SANZ-ALONSO**, **Assistant Professor, Department of Statistics

DANIEL MASSATT, William H. Kruskal Instructor, Department of Statistics

JUSTIN FINKEL, PhD Candidate, CCAM

APRIL

THURSDAY, April 18, 2019, at 1:00 PM, **in Jones 304**, 5747 South Ellis Avenue

COLIN SCHEIBNER, Department of Physics, University of Chicago

Title: "Odd Elasticity"

THURSDAY, April 25, 2019, at 1:00 PM, **in Jones 304**, 5747 South Ellis Avenue

ABBY STEVENS, Department of Statistics, University of Chicago

Title: "Graph Total Variation for Seasonal Forecasting"

MAY

THURSDAY, May 2, 2019, at 1:00 PM, **in Jones 304**, 5747 South Ellis Avenue

KABIR HUSAIN, James Franck Institute, University of Chicago

Title: "TBA"

THURSDAY, May 9, 2019, at 1:00 PM, **in Jones 304**, 5747 South Ellis Avenue

AARON DINNER, Department of Chemistry and the James Franck Institute

Title: "Computational Approaches for Learning About Dynamics in Complex Systems Far From Equilibrium"

THURSDAY, May 16, 2019, at 1:00 PM, **in Jones 304**, 5747 South Ellis Avenue

STEVEN REDFORD, James Franck Institute, University of Chicago

Title: "Activity as a Control Parameter for Directed Transport in Actin Liquid Crystals"

THURSDAY, May 23, 2019, at 1:00 PM, **in Jones 304**, 5747 South Ellis Avenue

MERLIN PELZ, Department of Mathematics at University of Munich; Visiting International Student, Computational and Applied Mathematics at University of Chicago

Title: "B-Spline Curve and Surface Algorithms Using Open CASCADE"

WINTER QUARTER 2019

ORGANIZERS

GUILLAUME BAL, Professor, Departments of Statistics and Mathematics

FATMA TERZIOGLU, William H. Kruskal Instructor, Department of Statistics

JUSTIN FINKEL, PhD Candidate, CCAM

JANUARY

**WEDNESDAY, January 16, 2019, at 4:30 PM, in Jones 226, 5747 South Ellis Avenue**

SOLOMON QUINN, Committee on Computational and Applied Mathematics (CCAM), University of Chicago

Title: "Polychromatic Map-making from Imaging Telescopes with Asymmetric Beams"

THURSDAY, January 24, 2019, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

Joint Presentation

KIMBERLY LIU, SOLOMON QUINN, JUNE WU, Committee on Computational and Applied Mathematics (CCAM), University of Chicago

Title: "FEniCS: A Computational Software for the Finite Element Method"

THURSDAY, January 31, 2019, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

ZOHEYR DOCTOR, Kavli Institute for Cosmological Physics, University of Chicago

Title: "Gravitational Waves: Hearing Extreme Events in the Universe"

THURSDAY, February 7, 2019, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

ZHISHENG XIAO, Committee on Computational and Applied Mathematics (CCAM), University of Chicago

Title: "Gaps Between CD Type Methods and Its Randomized Versions"

THURSDAY, February 14, 2019, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

ZHEN DAI, Committee on Computational and Applied Mathematics (CCAM), University of Chicago

Title: "Wind-Tree Model"

THURSDAY, February 21, 2019, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

CARLOS SERVAN, Department of Ecology and Evolution, University of Chicago

Title: "Assembly of Many-Species Ecosystems"

**RESCHEDULED to March 14**

THURSDAY, February 28, 2019, at 1:00 PM, in **Jones 304**, 5747 South Ellis Avenue

YUMING CHEN, Committee on Computational and Applied Mathematics (CCAM), University of Chicago

Title: "Analysis on Fractals: Laplacian and Eigenvalue Problems"

THURSDAY, March 7, 2019, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

AARON CHEN, Committee on Computational and Applied Mathematics (CCAM), University of Chicago

Title: "Topology, Complexity, and Neural Codes"

THURSDAY, March 14, 2019, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

YUMING CHEN, Committee on Computational and Applied Mathematics (CCAM), University of Chicago

Title: "Analysis on Fractals: Laplacian and Eigenvalue Problems"

AUTUMN QUARTER 2018

ORGANIZERS

MARY SILBER, Professor, Department of Statistics

GREGORY ONGIE, Postdoctoral Scholar, Department of Statistics

JUSTIN FINKEL, PhD Candidate, CCAM

OCTOBER

THURSDAY, October 11, 2018, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

JUSTIN FINKEL, Committee on Computational and Applied Mathematics (CCAM), University of Chicago

Title: "Transition Path Theory and Sudden Stratospheric Warming"

THURSDAY, October 18, 2018, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

RUIYI YANG, Committee on Computational and Applied Mathematics (CCAM), University of Chicago

Title: "Option Pricing"

THURSDAY, October 25, 2018, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

PREDRAG POPOVIC, Department of Geophysical Sciences, University of Chicago

Title: "Drainage Through Holes Drives Arctic Sea Ice Melt Ponds to the Critical Percolation Threshold"

NOVEMBER

THURSDAY, November 1, 2018, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

JUNE WU, Committee on Computational and Applied Mathematics (CCAM), University of Chicago

Title: "Extracting Coherent Patterns through Spectral Properties of the Koopman Operator"

THURSDAY, November 15, 2018, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

ERIK THIEDE, Department of Chemistry, University of Chicago

Title: "Dynamical Galerkin Approximation: Combining Machine Learning, Dynamical Systems, and Chemistry"

**NOVEMBER 19-23, 2018, No seminar this week, Thanksgiving break.**

THURSDAY, November 29, 2018, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

PRAGALLVA BARPANDA, Department of Geophysical Sciences, University of Chicago

Title: "Global Energetic Constraint on the Seasonality of Extratropical Storm Track Intensity and Position"

DECEMBER

THURSDAY, December 6, 2018, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

YIAN CHEN, Committee on Computational and Applied Mathematics (CCAM), University of Chicago

Title: "Multi-Model Communication and Data Assimilation"

SPRING QUARTER 2018

ORGANIZERS

GUILLAUME BAL, Professor, Departments of Statistics and Mathematics

JOSE I. RODRIGUEZ, Postdoctoral Scholar, Departments of Statistics and Mathematics

MAY

THURSDAY, May 10, 2018, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

NATI SREBRO and SURIYA GUNASEKAR, Toyota Technological Institute at Chicago

Title: "The RTG Machine Learning Summer School 2018"

THURSDAY, May 17, 2018, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

GREG NAISAT and LIWEN ZHANG, Department of Statistics and Department of Computer Science, University of Chicago

Title: "Summer Internships at Facebook, Microsoft, and SAS"

THURSDAY, May 24, 2018, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

GREG NAISAT, Department of Statistics, University of Chicago

Title: "Tropical Geometry of Deep Neural Networks"

WINTER QUARTER 2018

ORGANIZERS

GUILLAUME BAL, Professor, Departments of Statistics and Mathematics

JOSE I. RODRIGUEZ, Postdoctoral Scholar, Departments of Statistics and Mathematics

JANUARY

THURSDAY, January 11, 2018, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

VIVAK PATEL, Department of Statistics, University of Chicago

Title: "Identifying Linear Dynamical Systems with Stochastic Forcing"

THURSDAY, January 18, 2018, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

YILING YOU, Department of Statistics, University of Chicago

Title: "Accurate Solutions of Polynomial Eigenvalue Problems"

THURSDAY, January 25, 2018, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

JUSTIN FINKEL, Committee on Computational and Applied Mathematics, University of Chicago

Title: "Dimension Reduction and Data-Driven Forecasting of Timeseries"

FEBRUARY

THURSDAY, February 1, 2018, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

ZHISHENG XIAO, Committee on Computational and Applied Mathematics, University of Chicago

Title: "An Overview of Gradient-based Optimization"

THURSDAY, February 8, 2018, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

ROBERT WEBBER, Committee on Computational and Applied Mathematics, University of Chicago

Title: "Unified Convergence Results for Sequential Monte Carlo"

THURSDAY, February 15, 2018, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

RUIIYI YANG, Committee on Computational and Applied Mathematics, University of Chicago

Title: "Particle-laden Flows on an Incline"

AUTUMN QUARTER 2017

ORGANIZER

JONATHAN WEARE, Associate Professor, Department of Statistics and the James Franck Institute

OCTOBER

THURSDAY, October 5, 2017, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

VIVAK PATEL, Department of Statistics, University of Chicago

Title: "The Impact of Local Geometry and Batch Size on the Convergence and Divergence of Stochastic Gradient Descent"

THURSDAY, October 12, 2017, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

YUXIN CHEN, Visiting Student, Committee on Computational and Applied Mathematics, University of Chicago

Title: "Noise-induced Transition Between Stable Periodic States"

THURSDAY, October 26, 2017, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

REBECCA KOTSONIS, Committee on Computational and Applied Mathematics, University of Chicago

Title: "A New Look at Clustering Coefficients, with Generalization to Weighted and Multi-faction Networks"

NOVEMBER

THURSDAY, November 2, 2017, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

ROBERT WEBBER, Committee on Computational and Applied Mathematics, University of Chicago

Title: "Rare Event Simulation of Intense Tropical Cyclone Pathways"

THURSDAY, November 9, 2017, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

AARON CHEN , Committee on Computational and Applied Mathematics, University of Chicago

Title: "Topological methods in the theory of convex neural codes"

THURSDAY, November 16, 2017, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

KEVIN STANGL, Area of Focus: Algorithms and complexity, Machine learning and optimization, Toyota Technological Institute at Chicago

Title: "Upper and Lower Bounds on the Speed of a One Dimensional Excited Random Walk"

THURSDAY, November 30, 2017, at 1:00 PM, in Jones 226, 5747 South Ellis Avenue

JUSTIN FINKEL, Committee on Computational and Applied Mathematics, University of Chicago

Title: "Patterns in Arid Ecosystems: Connecting Models and Measurement"