test_birch.py 文件源码

def test_n_samples_leaves_roots():
    # Sanity check for the number of samples in leaves and roots
    X, y = make_blobs(n_samples=10)
    brc = Birch()
    brc.fit(X)
    n_samples_root = sum([sc.n_samples_ for sc in brc.root_.subclusters_])
    n_samples_leaves = sum([sc.n_samples_ for leaf in brc._get_leaves()
                            for sc in leaf.subclusters_])
    assert_equal(n_samples_leaves, X.shape[0])
    assert_equal(n_samples_root, X.shape[0])