python3 knn算法實現

1 代碼實現 import numpy as np def knn_classify(inx,train,labels,k): row = np.shape(train)[0] #訓練集有多少行 test = np.tile(inx,[row,1]) # 把一個樣本複製row行 dis = test-train # 數組各個元素對應相減 dis = dis**2

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