**ORGANIZERS:** CCAM PhD Students: Andrew Dennehy & Runxin Ni, Stats PhD Students: Melissa Adrian & Jimmy Lederman

**TIME AND VENUE:** Tuesdays,12:30 PM-1:30 PM, Jones 303 (unless otherwise indicated in **BLUE**).

**NOTE:** For further information and inquiries about building access for persons with disabilities, please email Jonathan Rodriguez at jgrodriguez@uchicago.edu.

### AUTUMN QUARTER 2023

Tuesday, September 26, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

RAPHAEL ROSSELLINI, Department of Statistics, University of Chicago

"Integrating Uncertainty Awareness into Conformalized Quantile Regression"

Tuesday, October 3, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

SUBHODH KOTEKAL, Department of Statistics, University of Chicago

"Optimal Heteroskedasticity Testing in Nonparametric Regression"

Tuesday, October 10, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

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

"Covariance Operator Estimation in the Small Lengthscale Regime"

Tuesday, October 17, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

ABIGAIL POTESHMAN, Committee on Computational and Applied Mathematics, University of Chicago

"Implementing and Leveraging Fast Algorithms for High-throughput Materials Characterizations"

Tuesday, October 24, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

SUZANNA PARKINSON, Committee on Computational and Applied Mathematics, University of Chicago

"The Role of Depth in Neural Networks: a Representation Cost Perspective"

Tuesday, October 31, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

ADELA DEPAVIA, Committee on Computational and Applied Mathematics, University of Chicago

"Algorithms for Graph Searching Problems"

Tuesday, November 7, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

KINGSLEY YEON, Committee on Computational and Applied Mathematics, University of Chicago

"Deep Univariate Polynomial and Conformal Approximation"

Tuesday, November 14, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

YATING LIU, Department of Statistics, University of Chicago

"Sparse Topic Modeling Via Spectral Decomposition and Thresholding"

Tuesday, November 14, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

YATING LIU, Department of Statistics, University of Chicago

"Sparse Topic Modeling Via Spectral Decomposition and Thresholding"

Tuesday, November 28, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

SOUMYABRATA KUNDU, Department of Statistics, University of Chicago

"Optimal Heteroskedasticity Testing in Random Design"

**PAST SEMINARS**

AUTUMN QUARTER 2022

Monday, October 3, 2022, at 12:30 PM (Central Daylight Time), in Jones 304, 5747 S. Ellis Avenue,

**Meet and Greet Hosted by Organizers**

Monday, October 10, 2022, at 12:00 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

MARK OLSON, Computational and Applied Mathematics, University of Chicago

"The Gaussian Free Field: Properties and Applications"

Monday, October 17, 2022, at 12:00 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

NATHAN WANIOREK, Computational and Applied Mathematics, University of Chicago

"Iterative Ensemble Kalman Methods for Inverse Problems"

Monday, October 24, 2022, at 12:00 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

ANDREW DENNEHY, Computational and Applied Mathematics, University of Chicago

"LINSCAN — A Linearity-Based Clustering Algorithm"

Monday, October 31, 2022, at 12:00 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

PHILLIP LO, Computational and Applied Mathematics, University of Chicago

"Learning Coronal Nonlinear Force-Free Magnetic Fields through Differentiable Rendering"

Monday, November 7, 2022, at 12:00 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

ZIANG YU, Computational and Applied Mathematics, University of Chicago

"Vector-wise Joint Diagonalization of Almost Communiting Matrices"

Monday, November 14, 2022, at 12:00 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

DANIEL XIANG, Department of Statistics, University of Chicago

"Meta-Analysis of Nudge Data"

Monday, November 28, 2022, at 12:00 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

ZHEN DAI, Computational and Applied Mathematics, University of Chicago

"Numerical Stability and Tensor Nuclear Norm"

### WINTER QUARTER 2023

Tuesday, January 10, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

SOLOMON QUINN, Computational and Applied Mathematics, University of Chicago

"A Boundary Integral Method for the Klein-Gordon Equation with Interface Waves"

Tuesday, January 17, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

ANDREW DENNEHY, Computational and Applied Mathematics, University of Chicago

"Crouzeix's Conjecture and the Cauchy Integral Transform"

Tuesday, January 31, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

SOUNAK PAUL, Department of Statisitics, University of Chicago

"Amortized Method of Moments for Multireference Alignment and Cryo-EM"

Tuesday, February 7, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

ABIGAIL POTESHMAN, Computational and Applied Mathematics, University of Chicago

"Comparing ab initio methods to calculate polarization for high-throughput ferroelectric screening"

Tuesday, February 14, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

SUZANNA PARKINSON, Computational and Applied Mathematics, University of Chicago

"Finding Low-Rank Functions Using Linear Layers in Neural Networks"

Tuesday, February 21, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

ERASMO TANI, Department of Computer Science, University of Chicago

"Active Learning of Partitions via Same-Cluster Oracle"

Tuesday, February 28, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

JAKE A. SOLOFF, Department of Statistics, University of Chicago

"Principal-Agent Hypothesis Testing"

SPRING QUARTER 2023

Monday, March 20, 2023, at 12:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

JORDAN KEMP, Department of Physics, University of Chicago

"Bayesian Origins of Growth, Cooperation, and Inequality in Populations of Learning Agents"

Monday, March 27, 2023, at 12:30 PM (Central Daylight Time), in Jones 226, 5747 S. Ellis Avenue

PETER NEKRASOV, Computational and Applied Mathematics, University of Chicago

"Band Gaps in Arctic Ice Shelves with Periodic Surface Rolls "

Monday, April 3, 2023, at 12:30 PM (Central Daylight Time), in Jones 226, 5747 S. Ellis Avenue

ALLEN POTESHMAN, Vatic Investments

Q&A

Monday, April 10, 2023, at 12:30 PM (Central Daylight Time), in Jones 226, 5747 S. Ellis Avenue

ZHAO LYU, Computational and Applied Mathematics, University of Chicago

"Neighborhood Selection with the Oracle Lasso in Sparse High-dimensional Graphs"

**Friday, April 14, 2023, at 3:00 PM (Central Daylight Time)**, in Jones 303, 5747 S. Ellis Avenue

Dissertation Presentation and Defense

ZHEN DAI, Computational and Applied Mathematics, University of Chicago

"Complexity and Numerical Stability in Matrix Computations and Nonconvex Optimization "

Monday, April 17, 2023, at 12:30 PM (Central Daylight Time), in Jones 226, 5747 S. Ellis Avenue

NATHAN WANIOREK, Computational and Applied Mathematics, University of Chicago

"Analysis of a Computational Framework for Bayesian Inverse Problems"

**Tuesday, April 18, 2023, at 5:00 PM (Central Daylight Time)**, in Jones 226, 5747 S. Ellis Avenue

Dissertation Presentation and Defense

ZEHUA LAI, Computational and Applied Mathematics, University of Chicago

"Algebraic and Differential Geometry in Modern Optimization"

**Wednesday, April 19, 2023, at 2:00 PM (Central Daylight Time)**, in Jones 304, 5747 S. Ellis Avenue

Dissertation Presentation and Defense

YUMING CHEN, Computational and Applied Mathematics, University of Chicago

"Data-driven Methods for Inverse Problems: Blending Data Assimilation and Machine Learning"

**Wednesday, April 19, 2023, at 3:00 PM (Central Daylight Time)**, in Jones 303, 5747 S. Ellis Avenue or Via Zoom

Dissertation Presentation and Defense

YIAN CHEN, Computational and Applied Mathematics, University of Chicago

"Structured Low-complexity Matrix and Tensor Approximation with Applications"

Monday, April 24, 2023, at 12:30 PM (Central Daylight Time), in Jones 226, 5747 S. Ellis Avenue

PHILLIP LO, Computational and Applied Mathematics, University of Chicago

"Learning Coronal Nonlinear Force-Free Magnetic Fields Through Differentiable Rendering"

Monday, May 1, 2023, at 12:30 PM (Central Daylight Time), in Jones 226, 5747 S. Ellis Avenue

TAYLOR CHRISTIANSEN, Goldin-Meadow Laboratory, University of Chicago

"Warmth, Competence, and Their Impact on Social Perception"

**Wednesday, May 10, 2023, at 3:00 PM (Central Daylight Time)**, in Jones 303, 5747 S. Ellis Avenue

Dissertation Presentation and Defense

SOLOMON QUINN, Computational and Applied Mathematics, University of Chicago

"Asymmetric Transport in Continuous Topological Insulators"

Monday, May 8, 2023, at 12:30 PM (Central Daylight Time), in Jones 226, 5747 S. Ellis Avenue

Melissa Adrian, Department of Statistics, University of Chicago

"Data Assimilation in Data-Driven Weather Forecasting: Pairing FourCastNet with the Auto-Differentiable Ensemble Kalman Filter"

WINTER QUARTER 2022

**ORGANIZERS:** CCAM PhD Students: ADELA DEPAVIA, PHILLIP LO, ABIGAIL POTESHMAN

TUESAY, February 15, 2022, at 1:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

PIERCE KLEIN, Computational and Applied Mathematics, University of Chicago

"Linear Discriminant Analysis"

TUESAY, February 22, 2022, at 1:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

ANGELA WANG, Computational and Applied Mathematics, University of Chicago

"Asymptotics of Bernoulli Gibbsian Line Ensembles"

TUESAY, March 1, 2022, at 1:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

YIFAN PENG, Computational and Applied Mathematics, University of Chicago

"Efficient Long-range Convolutions for Point Clouds in Deep Learning"

TUESAY, March 8, 2022, at 1:30 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

DANIEL XIANG, Department of Statistics, University of Chicago

"A Frequentist Perspective on the Local False Discovery Rate"

### SPRING QUARTER 2022

**ORGANIZERS:** CCAM PhD Students: ADELA DEPAVIA, PHILLIP LO, ABIGAIL POTESHMAN

FRIDAY, April 8, 2022, at 12:00 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

NATHAN WANIOREK, Computational and Applied Mathematics, University of Chicago

"Sparsity via Hierarchical Bayesian Models and Applications in Dictionary Learning"

FRIDAY, April 15, 2022, at 12:00 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

KIM LIU, Computational and Applied Mathematics, University of Chicago

"Multi-fidelity Bayesian Optimization"

FRIDAY, April 22, 2022, at 12:00 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

KIM LIU, Computational and Applied Mathematics, University of Chicago

"Multi-fidelity Bayesian Optimization"

FRIDAY, April 30, 2022, at 12:00 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

ABBY POTESHMAN, Computational and Applied Mathematics, University of Chicago

"Recovering Hyperfine Interactions in Random Spin Baths from Coherence Signals"

FRIDAY, May 6, 2022, at 12:00 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

CHUNYANG DING, Department of Physics, University of Chicago

"Optimizing Readout and Gate Pulses in a Coupled Heavy Fluxonium System"

FRIDAY, May 13, 2022, at 12:00 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

GENGSHUO TIAN, Computational and Applied Mathematics, University of Chicago

"Understanding the Covariance Matrix Spectrum of Neural Circuits"

FRIDAY, May 13, 2022, at 1:00 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue, **and via Zoom**

Dissertation Presentation and Defense

JUSTIN FINKEL, Computational and Applied Mathematics, University of Chicago

"Atmospheric Extremes Through the Lens of Transition Path Theory"

Zoom information included in email announcement.

FRIDAY, May 20, 2022, at 12:00 PM (Central Daylight Time), in Jones 303, 5747 S. Ellis Avenue

HWANWOO (JOSH) KIM, Computational and Applied Mathematics, University of Chicago

"Variational Iterative Alternating Scheme"

FRIDAY, May 27, 2022, **at 1:00 PM (Central Daylight Time)**, in Jones 303, 5747 S. Ellis Avenue

ASSAF NAOR, Princeton University

"Randomized Clustering in High Dimensions**"**

**TUESDAY, May 31, 2022, at 4:30 PM (Central Daylight Time)**, in Jones 303, 5747 S. Ellis Avenue, **and via Zoom**

Dissertation Presentation and Defense

AARON CHEN, Computational and Applied Mathematics, University of Chicago

"Applied Topology and Geometry of Neural Codes and Data"

AUTUMN QUARTER 2020

ORGANIZERS

JUSTIN FINKEL, PHILLIP LO, SOLOMON QUINN PhD Candidates, CCAM

YUEHAW KHOO Assistant Professor, CCAM, Statistics, and the College

ALEX STRANG, Kruskal Instructor, CCAM, Statistics

OCTOBER

TUESDAY, October 6, 2020, at 3 PM via ZOOM

JUSTIN FINKEL, Computational and Applied Mathematics, University of Chicago

"Transition Path Analysis of a Stratospheric Vacillation Model"

TUESDAY, October 13, 2020, at 3 PM via ZOOM

ZHISHENG XIAO, Computational and Applied Mathematics, University of Chicago

"VAEBM: A Symbiosis Between Variational Autoencoders and Energy-based Models"

TUESDAY, October 20, 2020, at 3 PM via ZOOM

RUIYI YANG, Computational and Applied Mathematics, University of Chicago

"Graph-Based Methods for Inverse Problems on Manifolds and Point Clouds"

TUESDAY, October 27, 2020, at 3 PM via ZOOM

CAROLYN ZHANG, Physics, University of Chicago

"Classification of interacting Floquet phases with U(1) symmetry in two dimensions"

NOVEMBER

TUESDAY, November 10, 2020, at 3 PM via ZOOM

SOLOMON QUINN, Computational and Applied Mathematics, University of Chicago

"Approximations of Topological Invariants"

DECEMBER

TUESDAY, December 1, 2020, at 3 PM via ZOOM

YUMING CHEN, Computational and Applied Mathematics, University of Chicago

"Physics-informed machine learning and uncertainty quantification"

WINTER 2021

ORGANIZERS

JUSTIN FINKEL, PHILLIP LO, SOLOMON QUINN PhD Candidates, CCAM

DANIEL SANZ-ALONSO, Assistant Professor, Department of Statistics (CAMI)

DANIEL MASSATT, Kruskal Instructor, CCAM, Statistics

TUESDAY, January 19, 2021, at 3 PM via ZOOM

RICHARD ZHU, Computational and Applied Mathematics, University of Chicago

**"Machine Learning for Molecules: Mass Spectrometry as a Case Study"**

TUESDAY, February 2, 2021, at 3 PM via ZOOM

RISI KONDOR, Department of Computer Science, Department of Statistics, Computational and Applied Mathematics, University of Chicago

**Professor Risi Kondor, who does research in machine learning, will be giving a brief research talk followed by an informal chat. Professor Kondor recently came back from a two-year leave of absence at the Flatiron Institute, an independent research institution run by the Simons Foundation.**

TUESDAY, February 9, 2021, at 3 PM via ZOOM

MATTHEW SHIN, Computational and Applied Mathematics, University of Chicago

**"Life after CAM: Things I am Glad/Wish I Learned in School"**

TUESDAY, February 16, 2021, at 3 PM via ZOOM

ABBY POTESHMAN, Computational and Applied Mathematics, University of Chicago

**"Network Structure of Non-equilibrium Quantum Transport Models"**

TUESDAY, February 23, 2021, at 3 PM via ZOOM

ROSALIND PAN, Department of Biochemistry and Molecular Biology, University of Chicago

**"Alignment-free evolutionary analysis of unalignable protein regions"**

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"

NOVEMBER

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__"

DECEMBER

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"

WINTER QUARTER 2020

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"**

SPRING QUARTER 2020

**All presentations previously scheduled for SPRING QUARTER 2020 have been RESCHEDULED for a later date.**

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"