轮廓系数

def solve():
    from sklearn.datasets import load_iris
    from sklearn.cluster import KMeans
    from sklearn.metrics import silhouette_score
    iris = load_iris()
    X = iris.data
    best_k, best_score = ____, -____
    for k in range(____, ____):
        km = KMeans(____)
        labels = km.fit_predict(____)
        score = silhouette_score(____)
        if score > best_score:
            best_score = score
            best_k = k
    print(____)