sda@cs.exeter.ac.uk (Steven Dakin) (11/16/88)
Recently I read an interesting article on applications of neural nets in the field of visual edge detection. Basically it showed that single layer nets couldn't be trained using a simple learning rule (eg. delta) to recognise lines of various orientations. The problem is that a set of weights to recognise verticals destroy all the information about horizontality inherent in the pattern of connectivity.The author proposed a solution using hidden units. So far so good. However some months on, and I can't for the life of me remember the reference or the author. I have a feeling it may be unpublished, but if anyone has come across this piece, or indeed any related work in the field, please mail me. I'll compile and mail a list if there's enough. Thanks. Steven Dakin (sda@uk.ac.exeter.cs)