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Piecewise Regression Using Cubic Spline
Dale J. Poirier
Journal of the American Statistical Association
Vol. 68, No. 343 (Sep., 1973), pp. 515-524
Stable URL: http://www.jstor.org/stable/2284770
Page Count: 10
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Spline theory and piecewise regression theory are integrated to provide a framework in which structural change is viewed as occurring in a smooth fashion. Specifically, structural change occurs at given points through jump discontinuities in the third derivative of a continuous piecewise cubic estimating function. Testing procedures are developed for detecting structural change as well as linear or quadratic segments. Finally, the techniques developed are illustrated empirically in a learning-by-doing model.
Journal of the American Statistical Association © 1973 American Statistical Association