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Cited by 1,350

The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.

Slow Feature Analysis: Unsupervised Learning of Invariances

Wiskott, Laurenz, Sejnowski, Terrence J.·2002·Neural Computation

Abstract

Invariant features of temporally varying signals are useful for analysis and classification. Slow feature analysis (SFA) is a new method for learning invariant or slowly varying features from a vectorial input signal. It is based on a nonlinear expansion of the input signal and application of principal component analysis to this expanded signal and its time derivative. It is guaranteed to find the optimal solution within a family of functions directly and can learn to extract a large number of decor-related features, which are ordered by their degree of invariance. SFA can be applied hierarchically to process high-dimensional input signals and extract complex features. SFA is applied first to complex cell tuning properties based on simple cell output, including disparity and motion. Then more complicated input-output functions are learned by repeated application of SFA. Finally, a hierarchical network of SFA modules is presented as a simple model of the visual system. The same unstructured network can learn translation, size, rotation, contrast, or, to a lesser degree, illumination invariance for one-dimensional objects, depending on only the training stimulus. Surprisingly, only a few training objects suffice to achieve good generalization to new objects. The generated representation is suitable for object recognition. Performance degrades if the network is trained to learn multiple invariances simultaneously.

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Metadata

Authors
Wiskott, L., & Sejnowski, T. J.
Venue
Neural Computation
Published
2002-04-01
Volume
14
Issue
4
Pages
715-770
ISSN
  • 0899-7667 (ISSN-L)
  • 1530-888X
OpenAlex
W2146444479
Cited by
1,350
References
7
FWCI
22.42
Type
journal article
Language
en
Open access
closed

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