Towards Persistence-Based Reconstruction in Euclidean Spaces [article]

Frédéric Chazal, Steve Oudot (INRIA Sophia Antipolis)
2007 arXiv   pre-print
Manifold reconstruction has been extensively studied for the last decade or so, especially in two and three dimensions. Recently, significant improvements were made in higher dimensions, leading to new methods to reconstruct large classes of compact subsets of Euclidean space ^d. However, the complexities of these methods scale up exponentially with d, which makes them impractical in medium or high dimensions, even for handling low-dimensional submanifolds. In this paper, we introduce a novel
more » ... proach that stands in-between classical reconstruction and topological estimation, and whose complexity scales up with the intrinsic dimension of the data. Specifically, when the data points are sufficiently densely sampled from a smooth m-submanifold of ^d, our method retrieves the homology of the submanifold in time at most c(m)n^5, where n is the size of the input and c(m) is a constant depending solely on m. It can also provably well handle a wide range of compact subsets of ^d, though with worse complexities. Along the way to proving the correctness of our algorithm, we obtain new results on Čech, Rips, and witness complex filtrations in Euclidean spaces.
arXiv:0712.2638v2 fatcat:m5pblzah4vhz7ngi4tm6dzunuy