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== Outer Characteristics of the point cloud Methods == | == Outer Characteristics of the point cloud Methods == | ||
| − | * PCA: Principal Component Analysis | + | * [[PCA: Principal Component Analysis]] |
| − | * Fisher Discriminant | + | * [[Fisher Discriminant Analysis_Old Kiwi]] |
== Inner characteristics of the point cloud Methods == | == Inner characteristics of the point cloud Methods == | ||
| − | * | + | * [[MDS_Old Kiwi]] |
Revision as of 23:46, 17 April 2008
Consider a collection of sample points $ \{x_1,x_2,\cdots,x_n\} $ where $ x_i \in R^m $. We divide the methods in two categories:
- Outer Characteristics of the point cloud: These methods require the spectral analysis of a positive definite kernel of dimension m, the extrinsic dimensionality of the data.
- Inner characteristics of the point cloud: These methods require the spectral analysis of a positive definite kernel of dimension n, the number of samples in the sample cloud.
