SklearnKDTree的使用

from sklearn import datasets
from sklearn.neighbors import KDTree,KNeighborsClassifier,KernelDensity,KNeighborsTransformerX, y &＃61; datasets.load_iris(return_X_y&＃61;True)tree &＃61; KDTree(X)
dist_to_knn, idx_of_knn &＃61; tree.query(X&＃61;X[[3]],k&＃61;5)
print(dist_to_knn) # 到k个近邻的距离
print(idx_of_knn) # k个近邻的索引