[英]value error while plotting confusion matrix in activity recognition project
trying to plot confusion matrix on human activity recognition everything works fine accept the confusion matrix.试图 plot 混淆矩阵对人类活动识别一切正常接受混淆矩阵。 I am not able to print confusion matrix.我无法打印混淆矩阵。
cm = confusion_matrix(y_test.values,y_pred)
plot_confusion_matrix(cm, np.unique(y_pred))
result:结果:
ValueError Traceback (most recent call last)
<ipython-input-29-7fc4511c54b7> in <module>
----> 1 cm = confusion_matrix(y_test.values,y_pred)
2 plot_confusion_matrix(cm, np.unique(y_pred)) # plotting confusion matrix
~\anaconda3\lib\site-packages\sklearn\utils\validation.py in inner_f(*args, **kwargs)
71 FutureWarning)
72 kwargs.update({k: arg for k, arg in zip(sig.parameters, args)})
---> 73 return f(**kwargs)
74 return inner_f
75
~\anaconda3\lib\site-packages\sklearn\metrics\_classification.py in confusion_matrix(y_true, y_pred, labels, sample_weight, normalize)
274
275 """
--> 276 y_type, y_true, y_pred = _check_targets(y_true, y_pred)
277 if y_type not in ("binary", "multiclass"):
278 raise ValueError("%s is not supported" % y_type)
~\anaconda3\lib\site-packages\sklearn\metrics\_classification.py in _check_targets(y_true, y_pred)
79 y_pred : array or indicator matrix
80 """
---> 81 check_consistent_length(y_true, y_pred)
82 type_true = type_of_target(y_true)
83 type_pred = type_of_target(y_pred)
~\anaconda3\lib\site-packages\sklearn\utils\validation.py in check_consistent_length(*arrays)
254 uniques = np.unique(lengths)
255 if len(uniques) > 1:
--> 256 raise ValueError("Found input variables with inconsistent numbers of"
257 " samples: %r" % [int(l) for l in lengths])
258
ValueError: Found input variables with inconsistent numbers of samples: [2947, 2937]
y_test.values
and y_pred
aren't the same length, one contains 2947 entries and the other 2937 y_test.values
和y_pred
长度不同,一个包含 2947 个条目,另一个包含 2937 个
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