查看如下代码并填空。 import numpy as np from sklearn import datasets from sklearn.model_selection import train_test_split from sklearn.neighbors import KNeighborsClassifier from sklearn.metrics import accuracy_score iris = datasets.load_iris() X_train, X_test, y_train, y_test = train_test_split(iris.data, iris.target, test_size=0.2) classifier = KNeighborsClassifier(n_neighbors=3). 【1】 (X_train, y_train) y_pred = classifier. 【2】 (X_test) print(accuracy_score(y_test,y_pred))
发布时间:2024-05-20 09:32:42