11. A computer-implemented system of realizing an associative memory capable of storing a set of documents and retrieving one or more of said stored documents similar to an inputted query document, said method comprising: coding each of said stored document or a part of it through a corresponding feature vector; arranging said feature vector in a matrix; and generating a query feature vector based on the query document.
15. The system of claim 11 , wherein a desired degree similarity can be defined by the user to be: identity; a settable degree of similarity or a similarity threshold; and or identity for certain features and a settable degree of similarity for the other features.