U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Efficient method of identifying non-solution or non-optimal regions of the domain of a function

Patent 7076516 Issued on July 11, 2006. Estimated Expiration Date: Icon_subject September 18, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

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Inventors

Assignee

Application

No. 09956590 filed on 09/18/2001

US Classes:

708/446, Solving equation708/290, Interpolation/extrapolation708/801, Particular function performed708/443, Differentiation708/500, Evaluation of root708/300Filtering

Examiners

Primary: Chaki, Kakali
Assistant: Do, Chat C.

Attorney, Agent or Firm

Foreign Patent References

  • 1362910 GB 08/01/1974

International Class

G06F 7/38

Abstract

A method of identifying one or more regions of the domain of a function that do not contain solutions is described along with a related subdivision method. These methods may be employed in the context of branch and bound methods that use interval analysis to search for solutions of functions. The one or more regions of the function domain that do not contain solutions are identified using a cropping formula derived from one or more components (low order and high order) of a Taylor Form inclusion function. A Corner Taylor Form inclusion function is also described which might be used to identify the output range of a function.

Other References

  • Taylor et al., Convergence analysis and optimisation of an iterative technique for polynomial factorisation, Sep. 1989, IEEE, p. 507-511.
  • Stuart, LP-Form inclusion functions for global optimisation, 1991, IEEE, pp. 51-65.
  • Hanson, P. et al., Decomposition and Interval Arithmetic Applied to Global Minimization of Polynomial and Rational Functions, Journal of Global Optimization, vol. 3, 1993, pp. 421-437.
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  • Messine, F. and Lagouanelle, J-L, Enclosure Methods for Multivariate Differentiable Functions and Application to Global Optimization, Journal of Universal Computer Science, vol. 4, No. 6, 1998, pp. 589-603.
  • Snyder, John M., Interval Analysis For Computer Graphics; in Proceedings of SIGGRAPH 1992, ACM SIGGRAPH, pp. 121-130, 1992.
  • Moore, Ramon E., Interval Analysis; Prentice Hall, Inc., pp. 1-145, 1966.
  • Ratchek, H. and Rokne, J., New Computer Methods for Global Optimization, Ellis Horwood Ltd. 1988, pp. 7-71.
  • Snyder, J., Generative Modeling for Computer Graphics and CAD: Symbolic Shape Design Using Interval Analysis, Academic Press, Inc. 1992, pp. 1-2; 121-217.
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