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Niklas Hellmer

I read the news today - oh, boy/ Four thousand holes in Blackburn, Lancashire/ And though the holes were rather small/ They had to count them all/ Now they know how many holes it takes to fill the Albert Hall
-The Beatles, A Day In The Life
In Breselenz, Riemann's birthplace. I'm a third year PhD student interested in metrics for persistence diagrams and modules and interactions of TDA with statistics.

Personal Information

Dioscuri Centre in Topological Data Analysis
Instytut Matematyczny PAN
Room 16
Sniadeckich 8, 00-656 Warszawa
@
ORCID

Here is a recent CV.

News

28/10/2022:
- Preprint "Topology-Driven Goodness-of-Fit Tests in Arbitrary Dimensions" on the ArXiv.
10.-14.10.2022
- Attending the workshop on geometry, topology and statistics at Institut Henri Poincare, Paris.
winter term 2022/23
- teaching recitation classes for Analysis I for WNE.
28.-30.09.2022
- Attending the TDA Workshop in Heidelberg, giving a "lightning talk" an Goodness-of-fit testing using Topology.
23/04/2022:
- Giing a talk at the 4th (Virtual) International Conference on Trauma Surgery Technology 2022, dedicated to Mathematics in Medical Diagnostics .
04/03/2022:
- Teaching labs for Pawel's course "Invitation to TDA".
10/11/2021:
- Giving a talk at the Dioscuri Seminar.
22/10/2021:
- Giving a talk in Piotr Hajac's Noncommutative Geometry Seminar about Persistent Homology: Algebra, Metrics, Stability.
04/10/2021:
- Back in office!
21/07/2021:
- Talk at the Lorentz Centre Workshop on Metrics in Multiparameter Persistence.
7/06/2021:
- Preprint "Bottleneck Profiles and Discrete Prokhorov Metric for Persistence Diagrams" on the ArXiv.
30/04/2021:
- Poster presentation "Discrete Prokhorov Metric for Persistence Diagrams" at TDA workshop at IMSI.
21/02/2021:
- Talk about "Discrete Prokhorov Metric for Persistence Diagrams" at APATG.
15/10/2020:
- Official inauguration of the Dioscuri Centre.
1/10/2020:
- I move to Dioscuri TDA at IMPAN.
29/09/2020:
- Talk about "New Metrics for Persistence Diagrams" at the Second Symposium on Machine Learning and Dynamical Systems. Video.
21/08/2020:
- OxCOVID19DB preprint on medRxiv.

Publications

(BibTeX)
1.
Dlotko, P. & Hellmer, N. Bottleneck Profiles and Discrete Prokhorov Metrics for Persistence Diagrams. arXiv:2106.02538 [cs, math] (2021). Accepted to Discrete & Computational Geometry.
2.
Adam Mahdi, Piotr Błaszczyk, Paweł Dłotko, Dario Salvi, Tak-Shing Chan, John Harvey, Davide Gurnari, Yue Wu, Ahmad Farhat, Niklas Hellmer, Alexander Zarebski, Bernie Hogan, Lionel Tarassenko, Oxford COVID-19 Database: a multimodal data repository for better understanding the global impact of COVID-19. Scientific Reports 11, 1�11 (2021).
3.
Dłotko, P., Hellmer, N., Stettner, Ł. & Topolnicki, R. Topology-Driven Goodness-of-Fit Tests in Arbitrary Dimensions. Preprint at https://doi.org/10.48550/arXiv.2210.14965 (2022).