Workshop on Topology: Identifying Order in Complex Systems | |

Topic: | Interactive visualization of 2-D persistence modules |

Speaker: | Michael Lesnick |

Affiliation: | Columbia University |

Date: | Saturday, November 7 |

Time/Room: | 5:00pm - 6:00pm/S-101 |

Video Link: | https://video.ias.edu/wtiocs-Lesnick |

In topological data analysis, we often study data by associating to the data a filtered topological space, whose structure we can then examine using persistent homology. However, in many settings, a single filtered space is not a rich enough invariant to encode the interesting structure of our data. This motivates the study of multidimensional persistence, which associates to the data a topological space simultaneously equipped with two or more filtrations. The homological invariants of these ``multifiltered spaces," while much richer than their 1-D counterparts, are also far more complicated. As such, adapting the usual 1-D persistent homology methodology for data analysis to the multi-D setting requires some some new ideas. In this talk, I'll introduce multi-D persistent homology and discuss joint work with Matthew Wright on the development of a tool for the interactive visualization of 2-D persistent homology.