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Estimating the Intrinsic Dimension of High-Dimensional Data Sets: A Multiscale, Geometric Approach

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Date
2011
Author
Little, Anna Victoria
Advisor
Maggioni, Mauro
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Abstract

This work deals with the problem of estimating the intrinsic dimension of noisy, high-dimensional point clouds. A general class of sets which are locally well-approximated by <italic>k</italic> dimensional planes but which are embedded in a <italic>D</italic>>><italic>k</italic> dimensional Euclidean space are considered. Assuming one has samples from such a set, possibly corrupted by high-dimensional noise, if the data is linear the dimension can be recovered using PCA. However, when the data is non-linear, PCA fails, overestimating the intrinsic dimension. A multiscale version of PCA is thus introduced which is robust to small sample size, noise, and non-linearities in the data.

Type
Dissertation
Department
Mathematics
Subject
Applied Mathematics
dimension estimation
geometric measure theory
multiscale analysis
point cloud data
Permalink
https://hdl.handle.net/10161/3863
Citation
Little, Anna Victoria (2011). Estimating the Intrinsic Dimension of High-Dimensional Data Sets: A Multiscale, Geometric Approach. Dissertation, Duke University. Retrieved from https://hdl.handle.net/10161/3863.
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This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.

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