我正在尝试保存更快的R-CNN集线器模型,并将其与AI平台gcloud ai-platform local predict
一起使用。我收到的错误是:
Failed to run the provided model: Exception during running the graph: [_Derived_] Table not initialized.\n\t [[{{node hub_input/index_to_string_1_Lookup}}]]\n\t [[StatefulPartitionedCall_1/StatefulPartitionedCall/model/keras_layer/StatefulPartitionedCall]] (Error code: 2)\n'
用于保存模型的代码:
model_url = "https://tfhub.dev/google/faster_rcnn/openimages_v4/inception_resnet_v2/1"
input = tf.keras.Input(shape=(), dtype=tf.string)
decoded = tf.keras.layers.Lambda(
lambda y: tf.map_fn(
lambda x: tf.image.resize(
tf.image.convert_image_dtype(
tf.image.decode_jpeg(x, channels=3), tf.float32), (416, 416)
),
tf.io.decode_base64(y), dtype=tf.float32)
)(input)
results = hub.KerasLayer(model_url, signature_outputs_as_dict=True)(decoded)
model = tf.keras.Model(inputs=input, outputs=results)
model.save("./saved_model", save_format="tf")
当我加载tf.keras.models.load_model("./saved_model")
并使用它进行预测时,该模型可以工作,但不能使用AI平台的本地预测。
用于AI平台本地预测的命令:
gcloud ai-platform local predict --model-dir ./saved_model --json-instances data.json --framework TENSORFLOW
版本:
python 3.7.0
tensorflow==2.2.0
tensorflow-hub==0.7.0
Saved_model_cli的输出:
MetaGraphDef with tag-set: 'serve' contains the following SignatureDefs:
signature_def['__saved_model_init_op']:
The given SavedModel SignatureDef contains the following input(s):
The given SavedModel SignatureDef contains the following output(s):
outputs['__saved_model_init_op'] tensor_info:
dtype: DT_INVALID
shape: unknown_rank
name: NoOp
Method name is:
signature_def['serving_default']:
The given SavedModel SignatureDef contains the following input(s):
inputs['image_bytes'] tensor_info:
dtype: DT_STRING
shape: (-1)
name: serving_default_image_bytes:0
The given SavedModel SignatureDef contains the following output(s):
outputs['keras_layer'] tensor_info:
dtype: DT_FLOAT
shape: (-1, 4)
name: StatefulPartitionedCall_1:0
outputs['keras_layer_1'] tensor_info:
dtype: DT_STRING
shape: (-1, 1)
name: StatefulPartitionedCall_1:1
outputs['keras_layer_2'] tensor_info:
dtype: DT_INT64
shape: (-1, 1)
name: StatefulPartitionedCall_1:2
outputs['keras_layer_3'] tensor_info:
dtype: DT_STRING
shape: (-1, 1)
name: StatefulPartitionedCall_1:3
outputs['keras_layer_4'] tensor_info:
dtype: DT_FLOAT
shape: (-1, 1)
name: StatefulPartitionedCall_1:4
Method name is: tensorflow/serving/predict
关于如何解决该错误的任何想法?
答案 0 :(得分:0)
问题是您的输入被解释为标量。做:
input = tf.keras.Input(shape=(1,), dtype=tf.string)