We first provide the background to the concept of Hilbert space, introduce RKHS, and then clarify the relation between smoothness and a priori knowledge on the solution in RKHS.

• 因此我们首先需了解希伯特空间背景的基本观念，接著针对RKHS的解释说明平滑演算法和先验演算法之间的关系。