Presentations

A list of upcoming and past presentations I’ve given in conferences and seminars, starting with the most recent. Underlined presentation titles link to slides or videos.

2019

• Centrality collisions, walk-classes, and spider donuts, (abstract)
  • Minisymposium on Networks, walks and matrix functions: new trends, results and potential issues, ICIAM 2019, University of Valencia, July 2019
  • joint with Eric Horton and Blair Sullivan;

2017

• Fully Polynomial Fixed Parameter Tractable algorithms — a guest lecture in NC State University’s CSC 791 advanced topics course “Parameterized Algorithms”, October 2017
• Condition Number of Krylov Matrices and Subspaces via Kronecker Product Structure, (abstract)
  • Minisymposium on Solving Matrix Equations, ILAS 2017, Iowa State University, July 2017
  • joint with David Imberti;

2016

• A friendly introduction to Math’s most social subject, Graphs: colorings, cliques, and combinatorics, (abstract)
  • Mathematics Department SUM Series, NC State University, October 2016
• Diffusions for Network Analysis: fast algorithms and localization results, (abstract)
  • Mathematics Department Applied Math Seminar, UNC Chapel Hill, September 2016
• Scaling graph clustering algorithms,
  • KDD MLG, August 2016
  • presention on a paper joint with Merrielle Spain and Stephen Kelley
• Graph clustering with modified spectral subspaces and functions of matrices, (abstract)
  • Minisymposium on “Matrix Methods in Network Analysis” at ILAS, July 2016
  • joint work with David F. Gleich and Olivia Simpson
• Graph diffusions and matrix functions: fast algorithms and localization results, (abstract)
  • my PhD dissertation defense, Mathematics Department, Purdue University, April 2016.
• Strong localization in Personalized PageRank Vectors, (abstract)

2015

• Local diffusion algorithms for fast, personalized graph applications, (abstract)
  • A joint tutorial that I presented with David Gleich at The WAW School on Complex Networks and Graph Models, December 2015
• Local clustering with graph diffusions and spectral solution paths, (abstract)
  • SIAM Applications of Linear Algebra 2015, mini-symposium of “Recent spectral approaches to graph clustering”
• The Gauss-Southwell method: intro and applications, (abstract)
  • Purdue University Numerical Linear Algebra Group, October 2015
• The Fiedler and PageRank vectors, (part 1 part 2)
  • Purdue University Numerical Linear Algebra Group, October 2015
• Spectral graph theory; eigenvalues and friendship, (abstract)
  • Mathematics Department Student Colloquium, Purdue University, September 2015.
• Overlapping Community Detection via Link Clustering
  • Cyber-analytics and Decision Systems group at MIT Lincoln Labs, August 2015
• Circulant Matrices, the FFT, and Eigenvalues, (abstract)
  • Purdue University Numerical Linear Algebra Group, April 2015
• Introduction to the Kronecker Product, (abstract)
  • Purdue University Numerical Linear Algebra Group, January 2015
• Krylov and QR and Polynomials, (abstract)
  • Purdue University Numerical Linear Algebra Group, January 2015

2014

• Bounding Facebook Friends with Fast Matrix Functions, (abstract)
  • Math Department Graduate Research Day Symposium, Purdue University. November, 2014
• Local community structure in social & information networks, (abstract)
  • Purdue CS department’s Machine Learning Seminar, September 2014
• Heat Kernel Based Community Detection, (abstract)
  • KDD 2014, Network Community Detection session, August 2014
• Computing Functions of Matrices: How, and Why, (abstract)
  • Purdue University Numerical Linear Algebra Group, April 2014
• A sub-linear method for computing columns of functions of sparse matrices, (abstract)
  • Complexity Theory Seminar, Purdue University Computer Science Department, March 2014

2013 and beyond

• A Nearly Sublinear Approximation to exp{P}ei for Large Sparse Matrices from Social Networks, (abstract)
  • Workshop on Algorithms for the Web graph (WAW) at Harvard University, Cambridge, MA, December 2013
• A Quick and Dirty Approximation of exp{P}ei for Huge Networks,
  • Gene Golub SIAM Summer School (G2S3) on Matrix Functions and Equations at Fudan University, Shanghai, China, August 2013
• A friendly introduction to Math’s most social subject, Graphs: colorings, cliques, and combinatorics, (abstract)
  • Mathematics Department Student Colloquium, Purdue University, 2012.