An auto-associative memory is an associative memory where the input and output are identical. This initially does not seem useful, however it may be used where the input is in some way incomplete or noisy and the auto-encoder recreates a full or noise-free image.
Used on Chap. 6: page 118; Chap. 10: page 209; Chap. 12: pages 277, 278
Also known as auto-associative