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Slow Feature Analysis

A type of linear factor model that uses the slowness principle and applies a cost to time. For features that may not change rapidly over time, e.g. whether or not an animal is in frame of a video, slow feature analysis can smooth the detection of those features. A cost may be added of the following form: λtL(f(x(t+1)),f(x(t)))\lambda \sum_{t} L(f(x^{(t+1)}), f(x^{(t)})) It has not been used frequently or in any state-of-the-art applications, but may hold promise for more interesting system to come.

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Updated 2021-07-08

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Data Science