使用基于PCA+KNN算法实现的人脸识别，本算法的优点在于使用的是基于2DPCA的方法，计算时间更短，效率更高。-PCA+ KNN-based face recognition algorithm, the advantage of this algorithm is based on the use of 2DPCA method in calculating the time is even shorter, more efficient.

该算法是rock算法的主体算法，主要用于数据的聚合处理-The algorithm is the algorithm of the main algorithm rock, mainly for data aggregation processing

用k-means算法实现KNN算法，是模式识别中的经典算法再现-K-means algorithm with KNN algorithm is a classical pattern recognition algorithm for reconstruction

基于KNN算法对多种水果和蔬菜图像进行分类识别，识别率较高(Based on KNN algorithm, a variety of fruit and vegetable images are classified and recognized with high recognition rate)