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| Main Author: | |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2407.07219 |
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| _version_ | 1866914864440541184 |
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| author | Hopper, John Seale |
| author_facet | Hopper, John Seale |
| contents | This paper will introduce a family of sliced Wasserstein geodesics which are not standard Wasserstein geodesics, objects yet to be discovered in the literature. These objects exhibit how the geometric structure of the Sliced Wasserstein space differs from the Wasserstein space, and provides a simple example of how solving the barycenter and gradient flow problems change when moving between these metrics. Some of these geodesics will only be Hölder continuous with respect to the Wasserstein metric and thus will provide a direct proof that Sliced-Wasserstein and regular Wasserstein metrics are not equivalent. Previous proofs of this were done for various cases in [2] and [5]. This paper, not only provides a direct proof, but also fills in gaps showing these metrics not equivalent in dimensions greater than 2. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_07219 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Sliced Wasserstein Geodesics and Equivalence Wasserstein and Sliced Wasserstein metrics Hopper, John Seale Probability Optimization and Control 49Q22, 46E27, 60A99 This paper will introduce a family of sliced Wasserstein geodesics which are not standard Wasserstein geodesics, objects yet to be discovered in the literature. These objects exhibit how the geometric structure of the Sliced Wasserstein space differs from the Wasserstein space, and provides a simple example of how solving the barycenter and gradient flow problems change when moving between these metrics. Some of these geodesics will only be Hölder continuous with respect to the Wasserstein metric and thus will provide a direct proof that Sliced-Wasserstein and regular Wasserstein metrics are not equivalent. Previous proofs of this were done for various cases in [2] and [5]. This paper, not only provides a direct proof, but also fills in gaps showing these metrics not equivalent in dimensions greater than 2. |
| title | Sliced Wasserstein Geodesics and Equivalence Wasserstein and Sliced Wasserstein metrics |
| topic | Probability Optimization and Control 49Q22, 46E27, 60A99 |
| url | https://arxiv.org/abs/2407.07219 |