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我想通過使用Jaccard索引(從sklearn.metrics導入jaccard_similarity_score)計算通過使用KMeans生成的集羣之間的相似性。這些可能是一個包含特定值的矩陣:在[i,j]應該是羣集i和j之間的相似度。我現在代碼:jaccard_similarity_score引發ValueError:不支持連續多輸出
from sklearn import datasets
from sklearn.cluster import KMeans
from sklearn.metrics import jaccard_similarity_score
iris = datasets.load_iris()
X = iris.data
kmeans = KMeans(n_clusters=3).fit(X)
labels = kmeans.labels_
for i in range(3):
for j in range(3):
print(jaccard_similarity_score(X[np.where(labels==i)], X[np.where(labels==j)]))
但我得到了以下錯誤:
Traceback (most recent call last):
File "<ipython-input-15-e7b8e4471987>", line 3, in <module>
print(jaccard_similarity_score(X[np.where(labels==i)], X[np.where(labels==j)]))
File "C:\Anaconda3\envs\p3\lib\site-packages\sklearn\metrics\classification.py", line 383, in jaccard_similarity_score
y_type, y_true, y_pred = _check_targets(y_true, y_pred)
File "C:\Anaconda3\envs\p3\lib\site-packages\sklearn\metrics\classification.py", line 89, in _check_targets
raise ValueError("{0} is not supported".format(y_type))
ValueError: continuous-multioutput is not supported
這兩個爲我和j循環做什麼?爲什麼在循環中調用jaccard_similarity得分? –
因爲我想爲每對集羣計算jaccard索引。這些記錄應該實際輸入矩陣[i] [j] – user6808217