Incremental Slow Feature Analysis: Adaptive and Episodic Learning from High-Dimensional Input Streams

Details Incremental Slow Feature Analysis: Adaptive and Episodic Learning from High-Dimensional Input Streams Incremental Slow Feature Analysis: Adaptive and Episodic Learning from High-Dimensional Input Streams

2011-12-09

arxiv.org/abs/1112.2113v1

Computer Science

Artificial Intelligence

Scientific paper

Slow Feature Analysis (SFA) extracts features representing the underlying causes of changes within a temporally coherent high-dimensional raw sensory input signal. Our novel incremental version of SFA (IncSFA) combines incremental Principal Components Analysis and Minor Components Analysis. Unlike standard batch-based SFA, IncSFA adapts along with non-stationary environments, is amenable to episodic training, is not corrupted by outliers, and is covariance-free. These properties make IncSFA a generally useful unsupervised preprocessor for autonomous learning agents and robots. In IncSFA, the CCIPCA and MCA updates take the form of Hebbian and anti-Hebbian updating, extending the biological plausibility of SFA. In both single node and deep network versions, IncSFA learns to encode its input streams (such as high-dimensional video) by informative slow features representing meaningful abstract environmental properties. It can handle cases where batch SFA fails.

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