CoSmo: A Constrained Scatterplot Smoother for Estimating Convex, Monotonic Transformations
CoSmo：估计凸性与单调变换的约束散点平滑方法
In many of the applied sciences, it is common that the forms of empirical relationships are almost completely unknown prior to study. Scatterplot smoothers used in nonparametric regression methods have considerable potential to ease the burden of model specification that a researcher would otherwise face in this situation. Occasionally the researcher will know the sign of the first or second derivatives, or both. This article develops a smoothing method that can incorporate…