Mathematics & Statistics Colloquium Tuesdays, 2:30 to 4:00

For virtual event links or to be added to the colloquium mailing list please contact

See also previous colloquium Abstracts and YouTube Playlist.

Colloquium organizers: Aleka Kapatou ( and Olga Cordero-Brana (

Spring 2021 Schedule

  • Feb. 9: Sauleh Siddiqui (AU)
    "A Bilevel Optimization Method for an Exact Solution to Equilibrium Problems with Binary Variables" 
  • Feb. 16: Yei Eun Shin (NIH, NCI)
    "Weight calibration to improve efficiency for estimating pure absolute risks from the proportional and additive hazards model in the nested case-control design"
  • Feb. 23: Nate Strawn (Georgetown, NIH, NCI)
    "Isometric Data Embeddings: Visualizations and Lifted Signal Processing"
  • Mar. 16: Stephen D. Casey (AU, Personnel Data Research Institute)
    & Thomas J. Casey (AU)
    "The Analysis of Periodic Point Processes"
  • Mar. 23: Zois Boukouvalas (AU)
    "Independent Component and Vector Analyses for Explainable Detection of Misinformation During High Impact Events"
  • Mar. 30: Der-Chen Chang (Georgetown)
    "Introduction to ̄∂-Neumann Problem"
  • Apr. 14: John M. Abowd (US Census Bureau)
    Title TBD

Colloquium: John Nolan


Random walks are a powerful tool for studying the structure of complicated objects. Professor John Nolan's talk describes key ideas for classical Brownian motion; its relationship to potential theory and capacity; and a generalization to alpha-stable motion and the computation of alpha-capacity. 

District Fourier Talks

Capitol Dome Sinc FunctionDistrict Fourier Talks are the annual meeting of local mathematicians, engineers, and applied scientists exchanging and exploring recent advances and trends in harmonic analysis and applications.

Annual Halloween Lecture


Professor Henry Segerman of Oklahoma State University discusses his work in mathematical visualization: making accurate, effective, and beautiful pictures, models, and experiences of mathematical concepts.

Past Colloquia

9/8/2020: Stephen D. Casey, American University; Norbert Wiener Center University of Maryland
A New Architecture for Cell Phones Sampling via Projection for UWB and AFB Systems

9/15/2020: Martha Dusenberry Pohl, American University 
Further Visualizations of the Census: ACS, Redistricting, Names Files; & HMDA using Shapefiles, BISG, Venn Diagrams, Quantification, 3-D rotation, & Animation

9/22/2020: Michael Baron, American University
Statistical analysis of epidemic counts data: modeling, detection of outbreaks, and recovery of missing data

9/29/2020: Soutrik Mandal, Division of Cancer Epidemiology and Genetics (National Cancer Institute, National Institutes of Health)
Incorporating survival data to case-control studies with incident and prevalent cases

10/13/2020: John P. Nolan, American University
Hitting objects with random walks

10/20/2020: Yuri Levin-Schwartz, Icahn School of Medicine at Mount Sinai 
Machine learning improves estimates of environmental exposures

10/27/2020: Nathalie Japkowicz, American University
Harnessing Dataset Complexity in Classification Tasks

11/10/2020: Anthony Kearsley, NIST

11/17/2020: Donna Dietz, American University 
An Analysis of IQ-Link (TM)

1/21/2020: Justin Pierce, Federal Reserve Washington DC
Examining the Decline in US Manufacturing Employment

1/28/2020: Ruth Pfeiffer, Biostatistics Branch, National Cancer Institution, NIH
Sufficient dimension reduction for high dimensional longitudinally measured biomarkers

2/11/2020: Erica L. Smith, Bureau of Justice Statistics, US Dept. of Justice
Overview of Department of Justice Statistical Data Collections Related to Gun Violence

2/18/2020: Sudip Bhatttacharjee, University of Connecticut
A Text Mining and Machine Learning Platform to Classify Businesses into NAICS codes

2/25/2020: Avi Bender, National Technical Information Service (NTIS)
Data Science Skills for Delivering Mission Outcome: An interactive discussion with the Director of the National Technical Information Service (NTIS), US Department of Commerce

9/10/2019: Dr. Scott Parker, American University
Some useful information about the Wilcoxon-Mann Whitney test and effect size measurement

9/17/2019: Dr. Michael Robinson, American University
Radio Fox Hunting using Sheaves

9/24/2019: Dr. Zois Boukouvalas, American University
Data Fusion in the Age of Data: Recent Theoretical Advances and Applications

10/8/2019: Dr. Elizabeth Stuart, Johns Hopkins
Assessing and enhancing the generalizability of randomized trials to target populations

10/15/2019: Latif Khalil, JBS International, Inc. 
Entity Resolution Techniques to Significantly Improve Healthcare Data Quality

10/22/2019: Dennis Lucarelli, American University 
Steering qubits, cats and cars via gradient ascent in function space

10/29/2019: Michael Thieme, Assistant Director for Decennial Census Programs, Systems and Contracts
Census 2020 - Clear Vision for the Country 

11/12/2019: John Eltinge, US Census Bureau 
Transparency and Reproducibility in the Design, Testing, Implementation and Maintenance of Procedures for the Integration of Multiple Data Sources

11/19/2019: Xander Faber, Institute for Defense Analyses, Center for Computing Sciences