nearest neighbour approximation

例句：

1. 1. In the study of machine learning, nearest neighbor approximation is a popular technique for handling high-dimensional data.
   在机器学习研究中，最近邻近似是一种常用的技术，用于处理高维数据。
2. 2.The nearest neighbor approximation method was used to estimate the distance between two points on the surface of the earth.
   最近邻近似方法被用来估计地球表面两点之间的距离。
3. 3. The nearest neighbor approximation is often used in image processing to reduce noiseand enhance image quality.
   最近邻近似在图像处理中常用来减少噪声并提高图像质量。