{ “error”: “inputs is a plain value/list, but expecting an object as multiple input tensors required as per tensorinfo_map” }

问题

I am using tensorflow serving to deploy my model .

my tensorinfo map is

saved_model_cli show --dir /export/1/ --tag_set serve --signature_def serving_default

The given SavedModel SignatureDef contains the following input(s):
  inputs['length_0'] tensor_info:
      dtype: DT_INT32
      shape: (-1)
      name: serving_default_length_0:0
  inputs['length_1'] tensor_info:
      dtype: DT_INT32
      shape: (-1)
      name: serving_default_length_1:0
  inputs['length_2'] tensor_info:
      dtype: DT_INT32
      shape: (-1)
      name: serving_default_length_2:0
  inputs['tokens_0'] tensor_info:
      dtype: DT_STRING
      shape: (-1, -1)
      name: serving_default_tokens_0:0
  inputs['tokens_1'] tensor_info:
      dtype: DT_STRING
      shape: (-1, -1)
      name: serving_default_tokens_1:0
  inputs['tokens_2'] tensor_info:
      dtype: DT_STRING
      shape: (-1, -1)
      name: serving_default_tokens_2:0
The given SavedModel SignatureDef contains the following output(s):
  outputs['alignment'] tensor_info:
      dtype: DT_FLOAT
      shape: (-1, 1, -1, -1)
      name: StatefulPartitionedCall_8:0
  outputs['length'] tensor_info:
      dtype: DT_INT32
      shape: (-1, 1)
      name: StatefulPartitionedCall_8:1
  outputs['log_probs'] tensor_info:
      dtype: DT_FLOAT
      shape: (-1, 1)
      name: StatefulPartitionedCall_8:2
  outputs['tokens'] tensor_info:
      dtype: DT_STRING
      shape: (-1, 1, -1)
      name: StatefulPartitionedCall_8:3
Method name is: tensorflow/serving/predict

I am making a curl request

curl -X POST -i 'http://192.168.1.16:8501/v1/models/export:predict' --data '{ "signature_name":  "serving_default",  "inputs": [{ "tokens_0" :["text text text text text text text text text text"], "length_0": [1], "tokens_1": ["01 01 01 01 01 01 01 01 01 01"], "length_1": [1], "tokens_2": ["4 4 4 1 1 4 4 4 4 4"], "length_2": [1]}]}'

I want to know where I am going wrong in passing data. what should be the request json format.

This particular model is a multi feature model , which takes three strings as input and than gives one string as output.

回答1:

You are passing your input in row format, so if you replace "inputs" to "instances" everything should work fine, See here for the difference between row and columnar format

来源：https://stackoverflow.com/questions/59878744/error-inputs-is-a-plain-value-list-but-expecting-an-object-as-multiple-in