Marvin Howard Gersho

US Patent:

53033302, Apr 12, 1994

Filed:

Dec 17, 1992

Appl. No.:

7/992868

Inventors:

Marvin H. Gersho - Plainfield NJ
Randall R. Reiter - Upper Saddle River NJ

Assignee:

Bell Communications Research, Inc. - Livingston NJ

International Classification:

G06F 1518

US Classification:

395 24

Abstract:

A hybrid network 100 which combines a neural network of the self-organized type 110 with a plurality of neural networks of the supervised learning type 150,160,170 to successfully retrieve building address information from a database using imperfect textual retrieval keys. Generally, the self-organized type is a Kohonen Feature Map network, whereas each supervised learning type is a Back Propagation network. A user query 105 produces an activation response 111,112,113 from the self-organized network 110 and this response, along with a new query 151,161,171 derived from the original query 105, activates a selected one of the learning networks R. sub. 1,R. sub. 2,R. sub. M to retrieve the requested information.