Sammenlign metoder
Gjennomgå de valgte metodene side om side; rader som avviker, er uthevet.
| Isomap× | Kjerne-PCA× | |
|---|---|---|
| Fagfelt | Maskinlæring | Maskinlæring |
| Familie | Latent structure | Latent structure |
| Opprinnelsesår≠ | 2000 | 1998 |
| Opphavsperson≠ | Tenenbaum, J. B.; de Silva, V.; Langford, J. C. | Schölkopf, B.; Smola, A. J.; Müller, K.-R. |
| Type≠ | Manifold learning / nonlinear dimensionality reduction | Nonlinear dimensionality reduction via kernel trick |
| Opprinnelig kilde≠ | Tenenbaum, J. B., de Silva, V. & Langford, J. C. (2000). A global geometric framework for nonlinear dimensionality reduction. Science, 290(5500), 2319–2323. DOI ↗ | Schölkopf, B., Smola, A. J., & Müller, K.-R. (1998). Nonlinear component analysis as a kernel eigenvalue problem. Neural Computation, 10(5), 1299–1319. DOI ↗ |
| Alias | Isomap, isometric feature mapping, geodesic Isomap, nonlinear MDS | KPCA, kernel PCA, nonlinear PCA via kernel trick, kernel eigenvalue decomposition |
| Relaterte≠ | 3 | 5 |
| Sammendrag≠ | Isomap (Isometric Feature Mapping) is a manifold learning algorithm introduced by Tenenbaum, de Silva, and Langford in 2000 that discovers the intrinsic low-dimensional geometry of high-dimensional data by preserving geodesic — rather than straight-line Euclidean — distances between all pairs of points. It was one of the earliest, and most influential, nonlinear dimensionality reduction methods to demonstrate that genuinely curved data manifolds could be unfolded into a faithful low-dimensional coordinate system. | Kernel Principal Component Analysis (Kernel PCA) is a nonlinear dimensionality-reduction method introduced by Bernhard Schölkopf, Alexander Smola, and Klaus-Robert Müller in 1997–1998. It extends classical linear PCA to curved, non-linear data manifolds by implicitly mapping input data into a high-dimensional feature space via a kernel function, then performing standard PCA in that space — all without ever computing the mapping explicitly. |
| ScholarGateDatasett ↗ |
|
|