[英]AttributeError: 'str' object has no attribute 'name' in Tensorflow
I am trying to predict the prices of items using Dnnregressor and I couldn't figure out this error that keeps coming.我正在尝试使用 Dnnregressor 预测商品的价格,但我无法弄清楚这个不断出现的错误。 I created tf numeric and categorical columns from pandas dataframe and fed it into the DNNRegressor.
我从 Pandas 数据帧创建了 tf 数字和分类列,并将其输入 DNNRegressor。 There is not much help online regarding this particular error.
关于此特定错误,在线帮助不多。
Please help me fix this error.请帮我修复这个错误。 Thanks
谢谢
AttributeError Traceback (most recent call last)
<ipython-input-27-790ecef8c709> in <module>()
92
93 if __name__ == '__main__':
---> 94 main()
<ipython-input-27-790ecef8c709> in main()
81 # learning_rate=0.1, l1_regularization_strength=0.001))
82 est = tf.estimator.DNNRegressor(feature_columns = feature_columns, hidden_units = [10, 10], model_dir = 'data')
---> 83 est.train(input_fn = get_train_input_fn(Xtrain, ytrain), steps = 500)
84 scores = est.evaluate(input_fn = get_test_input_fn(Xtest, ytest))
85 print('Loss Score: {0:f}' .format(scores['average_loss']))
C:\Users\user\Anaconda3\lib\site- packages\tensorflow\python\estimator\estimator.py in train(self, input_fn, hooks, steps, max_steps)
239 hooks.append(training.StopAtStepHook(steps, max_steps))
240
--> 241 loss = self._train_model(input_fn=input_fn, hooks=hooks)
242 logging.info('Loss for final step: %s.', loss)
243 return self
C:\Users\user\Anaconda3\lib\site-packages\tensorflow\python\estimator\estimator.py in _train_model(self, input_fn, hooks)
628 input_fn, model_fn_lib.ModeKeys.TRAIN)
629 estimator_spec = self._call_model_fn(features, labels,
--> 630 model_fn_lib.ModeKeys.TRAIN)
631 ops.add_to_collection(ops.GraphKeys.LOSSES, estimator_spec.loss)
632 all_hooks.extend(hooks)
C:\Users\user\Anaconda3\lib\site- packages\tensorflow\python\estimator\estimator.py in _call_model_fn(self, features, labels, mode)
613 if 'config' in model_fn_args:
614 kwargs['config'] = self.config
--> 615 model_fn_results = self._model_fn(features=features, **kwargs)
616
617 if not isinstance(model_fn_results, model_fn_lib.EstimatorSpec):
C:\Users\user\Anaconda3\lib\site-packages\tensorflow\python\estimator\canned\dnn.py in _model_fn(features, labels, mode, config)
389 dropout=dropout,
390 input_layer_partitioner=input_layer_partitioner,
--> 391 config=config)
392 super(DNNRegressor, self).__init__(
393 model_fn=_model_fn, model_dir=model_dir, config=config)
C:\Users\user\Anaconda3\lib\site-packages\tensorflow\python\estimator\canned\dnn.py in _dnn_model_fn(features, labels, mode, head, hidden_units, feature_columns, optimizer, activation_fn, dropout, input_layer_partitioner, config)
100 net = feature_column_lib.input_layer(
101 features=features,
--> 102 feature_columns=feature_columns)
103
104 for layer_id, num_hidden_units in enumerate(hidden_units):
C:\Users\user\Anaconda3\lib\site-packages\tensorflow\python\feature_column\feature_column.py in input_layer(features, feature_columns, weight_collections, trainable)
205 ValueError: if an item in `feature_columns` is not a `_DenseColumn`.
206 """
--> 207 _check_feature_columns(feature_columns)
208 for column in feature_columns:
209 if not isinstance(column, _DenseColumn):
C:\Users\user\Anaconda3\lib\site- packages\tensorflow\python\feature_column\feature_column.py in _check_feature_columns(feature_columns)
1660 name_to_column = dict()
1661 for column in feature_columns:
-> 1662 if column.name in name_to_column:
1663 raise ValueError('Duplicate feature column name found for columns: {} '
1664 'and {}. This usually means that these columns refer to '
C:\Users\user\Anaconda3\lib\site-packages\tensorflow\python\feature_column\feature_column.py in name(self)
2451 @property
2452 def name(self):
-> 2453 return '{}_indicator'.format(self.categorical_column.name)
2454
2455 def _transform_feature(self, inputs):
AttributeError: 'str' object has no attribute 'name'
And below is code:下面是代码:
def get_train_input_fn(Xtrain, ytrain):
return tf.estimator.inputs.pandas_input_fn(
x = Xtrain,
y = ytrain,
batch_size = 30,
num_epochs = None,
shuffle = True)
def get_test_input_fn(Xtest, ytest):
return tf.estimator.inputs.pandas_input_fn(
x = Xtest,
y = ytest,
batch_size = 32,
num_epochs = 1,
shuffle = False)
def main():
Xtrain, Xtest, ytrain, ytest = train_test_split(merc, ytr, test_size = 0.4, random_state = 42)
feature_columns = []
brand_rating = tf.feature_column.numeric_column('brand_rating')
feature_columns.append(brand_rating)
sentiment = tf.feature_column.numeric_column('description_polarity')
feature_columns.append(sentiment)
item_condition = tf.feature_column.numeric_column('item_condition_id')
feature_columns.append(item_condition)
shipping = tf.feature_column.indicator_column('shipping')
feature_columns.append(shipping)
name = tf.feature_column.embedding_column('item_name', 34) #(column name, dimension(no. of unique values ** 0.25))
feature_columns.append(name)
general = tf.feature_column.categorical_column_with_hash_bucket('General', 12)
feature_columns.append(general)
sc1 = tf.feature_column.categorical_column_with_hash_bucket('SC1', 120)
feature_columns.append(sc1)
sc2 = tf.feature_column.categorical_column_with_hash_bucket('SC2', 900)
feature_columns.append(sc2)
print(feature_columns)
#est = tf.estimator.DNNRegressor(feature_columns, hidden_units = [10, 10], optimizer=tf.train.ProximalAdagradOptimizer(
# learning_rate=0.1, l1_regularization_strength=0.001))
est = tf.estimator.DNNRegressor(feature_columns = feature_columns, hidden_units = [10, 10], model_dir = 'data')
est.train(input_fn = get_train_input_fn(Xtrain, ytrain), steps = 500)
After using使用后
general = tf.feature_column.categorical_column_with_hash_bucket('General', 12)
and other feature_column.categorical_column_with..., you should use和其他 feature_column.categorical_column_with...,你应该使用
general_indicator = tf.feature_column.indicator_column(general)
and then append it to your feature_columns list.然后将其附加到您的 feature_columns 列表中。
feature_columns.append(general_indicator)
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