层次聚类

def solve():
    from sklearn.datasets import load_iris
    from sklearn.cluster import DBSCAN
    from sklearn.preprocessing import StandardScaler
    import numpy as np
    iris = load_iris()
    X = iris.data
    scaler = StandardScaler()
    X_s = scaler.fit_transform(____)
    model = DBSCAN(____)
    labels = model.fit_predict(____)
    n_clusters = len(set(____)) - (____ if -____ in labels else ____)
    print(____)