An heteroassociative memory is a form of associative memory that stores input--output patterns where the output and input are different. For example, the input might be x-ray scans and the output a disease type indication. In an heteroassociative memory the type of input can be the same but the vaklues different, for example, associating photographs of people with photograohsof their mothers. . This is in contrast to an auto-associative memory.
Used on Chap. 6: page 118