Asymmetric Kernels: An Introduction

This chapter presents an overview of the nonstandard smoothing technique by means of asymmetric kernels. After referring to a (relatively short) history of asymmetric kernels, we provide an informal definition and a list of the kernels. Obviously it is difficult and even uneconomical to investigate each of them fully within the limited space of this book. Instead, we concentrate on a few kernels throughout, explain why they are chosen, and illustrate their functional forms and shapes.

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