Self-Teaching Through Correlated Input

Previous work has shown that competitive learning coupled with a top-down teaching signal can produce compact invariant representations. In this paper we show that such a teaching signal can be derived internally from correlations between input patterns to two or more converging processing streams with feedback. Such correlations arise naturally from the structure present in natural environments. We demonstrate this process on two small but computationally difficult problems. We hypothesize that the correlations between and within sensory systems enable the learning of invariant properties.