Tensorflow2 ValueError:找不到要从 SavedModel 加载的匹配函数

Question

我正在尝试从json字符串中获取数据，将其转换为tensorflow可以使用并进行预测的格式。

import tensorflow as tf
import pandas as pd
import json
import matplotlib.pyplot as ply
%matplotlib inline
from sklearn.model_selection import train_test_split
import numpy as np
new_model = tf.keras.models.load_model('demo_2020_05/demo_1')
json_string = '[{"S8":"String Data 8" , "S9":"String Data 9" , "S4":"String Data 4" , "S3":"String Data 3" , "S7":"String Data 7" , "S5":"String Data 5" , "S2":"String Data 2" , "S6":"String Data 6" , "I2": 400 , "I3": 0 , "I1": 0  , "S1":"String Data 1"  ,"S10":"String Data 10"}]'
a_json = json.loads(json_string)

predict = {}
for i in a_json: 
for key, val in i.items():      
predict[key] = []
for i in a_json:
for key, val in i.items():
temp = []
temp = predict[key]
temp.append(val)
predict[key] = temp
for i in a_json:
for key, val in i.items():
temp = []
temp = predict[key]
temp_np = np.array(temp)
predict[key] = temp_np
print(predict)
{'S1': array(['String Data 1'], dtype='<U42'), 'S2': array(['String Data 2'], dtype='<U23'), 'S3': array([String Data 3'], dtype='<U6'), 'S4': array(['String Data 4'], dtype='<U5'), 'S5': array(['String Data 5'], dtype='<U5'), 'S6': array(['String Data 6'], dtype='<U6'), 'S7': array(['String Data 7'], dtype='<U2'), 'S8': array(['String Data 8'], dtype='<U12'), 'I1': array([400]), 'I2': array([0]), 'I3': array([0]), 'S9': array(['String Data 9'], dtype='<U11'), 'S10': array(['String Data 10'], dtype='<U7')}



new_model.predict(predict)

这是我在构建模型时传递给模型的确切结构和数据。 我已经复制/粘贴了 json、for 循环和预测调用，它可以在创建模型的 jupyter 笔记本中进行预测。

这是我收到以下错误的地方：

ValueError: Could not find matching function to call loaded from the SavedModel. Got:
* {
'S1': <tf.Tensor 'features:0' shape=(None, 1) dtype=string>
, 'S2': <tf.Tensor 'features_1:0' shape=(None, 1) dtype=string>
, 'S3': <tf.Tensor 'features_2:0' shape=(None, 1) dtype=string>
, 'S4': <tf.Tensor 'features_3:0' shape=(None, 1) dtype=string>
, 'S5': <tf.Tensor 'features_4:0' shape=(None, 1) dtype=string>
, 'S6': <tf.Tensor 'features_5:0' shape=(None, 1) dtype=string>
, 'S7': <tf.Tensor 'features_6:0' shape=(None, 1) dtype=string>
, 'I1': <tf.Tensor 'features_7:0' shape=(None, 1) dtype=int64>
, 'S8': <tf.Tensor 'features_8:0' shape=(None, 1) dtype=string>
, 'S9': <tf.Tensor 'features_9:0' shape=(None, 1) dtype=string>
, 'S10': <tf.Tensor 'features_10:0' shape=(None, 1) dtype=string>
, 'I2': <tf.Tensor 'features_11:0' shape=(None, 1) dtype=int64>
, 'I3': <tf.Tensor 'features_12:0' shape=(None, 1) dtype=int64>
}
* None
Keyword arguments: {}
Expected these arguments to match one of the following 1 option(s):
Option 1:
Positional arguments (2 total):
* {
'I3': TensorSpec(shape=(None, 1), dtype=tf.int32, name='features/I3')
, 'S7': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S7')
, 'S8': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S8')
, 'I2': TensorSpec(shape=(None, 1), dtype=tf.int32, name='features/I2')
, 'S3': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S3')
, 'S6': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S6')
, 'S9': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S9')
, 'S2': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S2')
, 'I1': TensorSpec(shape=(None, 1), dtype=tf.int32, name='features/I1')
, 'S1': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S1')
, 'S4': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S4')
, 'S5': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S5')
, 'S10': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S10')
}
* None
Keyword arguments: {}

似乎 predict(( 正在寻找不同的数据类型/结构。 但是，我试图发送我认为它要求执行以下操作的内容。

ta_S4 = tf.TensorArray(tf.string, size=1, dynamic_size=True)
ta_S4 = ta_S4.write(0,'String Data 4')
ta_S3 = tf.TensorArray(tf.string, size=1, dynamic_size=True)
ta_S3 = ta_S3.write(0,'String Data 3')
ta_S7 = tf.TensorArray(tf.string, size=1, dynamic_size=True)
ta_S7 = ta_S7.write(0,'String Data 7')
ta_S5 = tf.TensorArray(tf.string, size=1, dynamic_size=True)
ta_S5 = ta_S5.write(0,'String Data 5')
ta_S2 = tf.TensorArray(tf.string, size=1, dynamic_size=True)
ta_S2 = ta_S2.write(0,'String Data 2')
ta_S6 = tf.TensorArray(tf.string, size=1, dynamic_size=True)
ta_S6 = ta_S6.write(0,'String Data 6')
ta_I2= tf.TensorArray(tf.int32, size=1, dynamic_size=True)
ta_I2  = ta_I2.write(0, 400)
ta_I3 = tf.TensorArray(tf.int32, size=1, dynamic_size=True)
ta_I3 = ta_I3.write(0, 0)
ta_I1 = tf.TensorArray(tf.int32, size=1, dynamic_size=True)
ta_I1 = ta_I1.write(0, 0)
ta_S1 = tf.TensorArray(tf.string, size=1, dynamic_size=True)
ta_S1 = ta_S1.write(0,'String Data 1')
ta_S10 = tf.TensorArray(tf.string, size=1, dynamic_size=True)
ta_S10 = ta_S10 .write(0,'String Data 10')


predict = {'S8': ta_S8,
'S9': ta_S9,
'S4': ta_S4,
'S3': ta_S3,
'S7': ta_S7,
'S5': ta_S5,
'S2': ta_S2,
'S6': ta_S6,
'I2': ta_I2,
'I3': ta_I3,
'I1': ta_I1,
'S1': ta_S1,
'S10': ta_S10
}
new_model.predict(predict)

此错误与 ：

ValueError: Failed to find data adapter that can handle input: (<class 'dict'> containing {"<class 'str'>"} keys and {"<class 'tensorflow.python.ops.tensor_array_ops.TensorArray'>"} values), <class 'NoneType'>

我不确定该传递给new_model.predict((的内容。

编辑 1：

问问题更简单。 如何创建类似于此(如下所示(的数据结构以传递给 new_model.predict(( 以获得预测？

{
'I3': TensorSpec(shape=(None, 1), dtype=tf.int32, name='features/I3')
, 'S7': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S7')
, 'S8': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S8')
, 'I2': TensorSpec(shape=(None, 1), dtype=tf.int32, name='features/I2')
, 'S3': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S3')
, 'S6': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S6')
, 'S9': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S9')
, 'S2': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S2')
, 'I1': TensorSpec(shape=(None, 1), dtype=tf.int32, name='features/I1')
, 'S1': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S1')
, 'S4': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S4')
, 'S5': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S5')
, 'S10': TensorSpec(shape=(None, 1), dtype=tf.string, name='features/S10')
}
* None
Keyword arguments: {} 

Answer 1

这是用

pip uninstall tensorflow
pip uninstall tensorboard
pip install -q tf-nightly
pip install --ignore-installed tf-nightly