N‐kernel: A review
介绍了一个用于时间序列或截面非参数模型估计和预测的R包，该包菜单驱动、操作简便，适合教学和研究，即使不熟悉非参数分析的用户也能使用。
Abstract The package performs estimation and prediction in the context of time‐series or cross‐section nonparametric models. It is menu‐driven and very easy to operate. The manual reads well. This version has some limitations, which can easily be corrected. Nevertheless it provides a useful pedagogical and research tool, even for people not familiar with nonparametric analysis.