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From Data to Differential Equations

In: COMPSTAT 2004 — Proceedings in Computational Statistics

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  • Jim O. Ramsay

    (McGill University)

Abstract

Differential equations are the natural way to model systems with functional inputs and functional outputs. They allow us to study the system’s dynamics in the sense of explicitly modelling how the output changes in response to sudden changes in input. For example, engineers developing control systems for industrial processes routinely use DIFE’s as modelling tools. A new method is described for going directly from noisy discrete data, not necessarily sampled at equally spaced times, to a system of differential equations of arbitrary orders, linear or nonlinear, that describes the data. The method involves a generalization of nonparametric curve estimation in which the penalty functional rather than the smoothing functions is estimated. Examples are drawn from chemical engineering and medicine.

Suggested Citation

  • Jim O. Ramsay, 2004. "From Data to Differential Equations," Springer Books, in: Jaromir Antoch (ed.), COMPSTAT 2004 — Proceedings in Computational Statistics, pages 393-404, Springer.
    • Handle: RePEc:spr:sprchp:978-3-7908-2656-2_32
    DOI: 10.1007/978-3-7908-2656-2_32
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