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United States Patent [w]

Gopinathan et al.

US005819226A [ii] Patent Number: [45] Date of Patent:

5,819,226 Oct. 6, 1998

[54] FRAUD DETECTION USING PREDICTIVE MODELING

[75] Inventors: Krishna M. Gopinathan; Louis S.

Biafore; William M. Ferguson;
Michael A. Lazarus, all ol San Diego;
Anu K. Pathria, Oakland; Allen Jost,
San Diego, all of Calif.

[73] Assignee: HNC Software Inc., San Diego, Calif.

[21] Appl. No.: 941,971
[22] Filed: Sep. 8, 1992

[51] Int. CI.6 G06F 157/00

[52] U.S. CI 705 1

[58] Field of Search 364/401, 406,

364/408; 395/21, 23; 235/23, 380; 705/35,

1

[56] References Cited

U.S. PATENT DOCUMENTS

5,025,372 6/1991 Burton et al 364/406

5,416,067 5/1995 Sloan et al 235/381

FOREIGN PATENT DOCUMENTS

0 418 144 Al 3/1991 European Pat. Off G06F 7/08

0 421 808 A3 4/1991 European Pat. Off G07F 7/10

0 468 229 A2 7/1991 European Pat. Off G06F 15/80

A 62-74768 4/1987 Japan G06F 15/30

A 63-184870 7/1988 Japan G06F 15/30

A 4-113220 4/1992 Japan G01D 3/00

A 4- 220758 8/1992 Japan G06F 15/18

WO 89/06398 7/1989 WIPO G06F 15/30

OTHER PUBLICATIONS

Electric Academy Electric Power Technology Institute Data
PE-89-33, "Analysis of Learning Process of Neural Net-
work on Security Assessment", pp. 161-170.
Gullo, Karen, "Neural Nets Versus Card Fraud Chase's
Software Learns to Detect Potential Crime" Feb. 2, 1990
American Banker Magazine .

International Search Report, International Application No

PCT/US93/08400, mailed Jan. 12, 1994.

Rumelhart, K.E., et al., "Learning Representations by Back

-Propagating Errors" Nature v. 323, pp. 533-536 (1986).

Hecht-Nielsen, R., "Theory of the Backpropagation Neural

Network", Neural Networks for Perception pp. 65-93

(1992).

Weigend, A.S., et al., "Generalization by Weight-Elimination with Application to Forecasting", Advances in Neural Information Processing Systems 3 pp. 875-882.

Primary Examiner—Gail O. Hayes

Attorney, Agent, or Firm—Fenwick & West LLP

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