Topology, Geometry, and Data Analysis seminar

TGDA@OSU

Times: Tuesdays 4--5pm.

Location: Cockins Hall 240. Map.

Contact: The seminar is currently organized by Matthew Kahle and Facundo Mémoli. Feel free to write to us if you have suggestions for speakers.

Current Schedule

Autumn 2015 Schedule

Sept. 15 Sanjeevi Krishnan (OSU).The Directed Topology of Sensor Networks
Oct. 6 Dena Asta (OSU).Geometric Approaches to Inference: Non-Euclidean Data and Networks.
Oct. 13 Joe Anderson (OSU).Heavy-Tailed Independent Component Analysis
Nov. 10 Krystal Taylor (OSU).Geometry and fractal sets
Nov. 17 José Perea (MSU).Projective coordinates for the analysis of data
Nov. 16 to Nov. 20 José Perea (MSU).Mini course on TDA

Spring 2015 Schedule

Jan. 19--23 No seminar.
Jan. 29 at CH 240 (Special Date and Venue) Konstantin Mischaikov (Rutgers).A Database of Dynamic Signatures for Switching.
Feb. 2--6 No seminar.
Feb. 9--13 No seminar..
Feb. 17th Carina Curto (PSU)Topological and algebraic approaches to the analysis of neural data.
Feb. 24th MickaŽl Buchet. Using the distance to a measure to efficiently handle noise in homology inference.
Mar. 6th No seminar.
Mar. 9, 4--5.30pm -- Journalism Bldg 371.Justin Curry (Duke).Sheaves as a Foundation for Persistence.
Talk I of Mini-course: Sheaves, Cosheaves and Applications.
Mar. 10, 4--5pm -- Journalism Bldg 295.Justin Curry (Duke).Understanding the Interleaving Distance for Sheaves.
Talk II of Mini-course: Sheaves, Cosheaves and Applications.
Mar. 13, 3--4pm -- MW 154.Justin Curry (Duke).Open Problems and Higher Categories in Persistence.
Talk III of Mini-course: Sheaves, Cosheaves and Applications.
Mar. 17th No seminar
Mar. 24thKatherine Turner (UChicago).Reconstruction of compact sets using cone fields.
Mar. 31st Dejan Slepcev (CMU).Variational problems on graphs and their continuum limits.
Apr. 7th TBA.
Apr. 14th Dmitriy Morozov.Computing Topology in Parallel.
Apr. 21st TBA.

Fall 2014 Schedule

Sep. 23Facundo Mémoli. (OSU)The classification of clustering methods (part 1).
Sep. 29Facundo Mémoli. (OSU)The classification of clustering methods (part 2).
Oct. 7No Seminar
Oct. 14 Matthew Kahle (OSU)The length of the longest bar in random persistent homology.
Oct. 21 Greg Malen (OSU).Random Graph Homomorphism Complexes.
Oct. 29No seminar.
Nov. 4Larry Wasserman (CMU).Statistical Inference for Topology.
Nov. 11No seminar.
Nov. 18Dan Brake (Notre Dame).Numerically decomposing algebraic surfaces with an infinite number of singularities.
Nov. 25Dan Burghelea (OSU).Topological novelty in "persistence" for angle valued map. (Jordan cells, and methods for their calculation).
Dec. 2Dan Thompson (OSU)Topological pressure and the detection of structure in long finite sequences.

Spring 2014 Schedule

Jan. 10Ulrich Bauer.The Morse theory of Cech and Delaunay filtrations.
Jan. 24Yusu Wang.Laplace operator from Discrete Samples and Applications.
Jan. 27 Dan Burghelea.Level persistence revisited (an alternative perspective and new results).
Feb. 7Facundo Mémoli.Spectral similarity of shapes.
Feb. 14 David SivakoffDeterministic percolation from random initial seeds.
Feb. 21 Anastasios Sidiropoulos.Topological simplification from random embeddings.
Feb. 28 Amit Patel.Persistent Sheaves.
Mar. 28 Misha Belkin.The Hidden Convexity of Spectral Clustering.
Apr. 4 Luis Rademacher.The More, the Merrier: the Blessing of Dimensionality for Learning Large Gaussian Mixtures.
Apr. 11Liz Munch.A distance measure on Reeb graphs.
Apr. 18Vin deSilva.Lipschitz extensions and higher-order metric certificates.
Apr. 23Gunnar Carlsson.The topology of finite metric spaces. (Talk will be on Wednesday April 23rd, 2--3pm, in CH 240.)
May 2 Pawel Dlotko.Discrete Morse Theory and Persistent Homology.

Fall 2013 Schedule

Sept. 13Matthew Kahle.Introduction to Random Topology (part 1).
Sept. 20Matthew Kahle.Introduction to Random Topology (part 2).
Oct. 04Tamal Dey.Simplicial complexes and their sparsification for topological data analysis.
Oct. 18Sanjeevi Krishnan.Directed Poincare duality.
Oct. 25Vidit Nanda.Discrete Morse theory for computing homology groups.
Nov. 15Peter Bubenik.A central limit theorem for topology.
Nov. 22Matthew Wright. Hadwiger integration and applications.

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