Datatype 11 is not recognized in java

jyj902 · November 30, 2021, 3:09pm

hello !
i used Classify structured data with feature columns learning a model with Python
To use in Android, it was converted to Pd → tflite and used.
An error occurred when testing the training model
“datatype 11 is not recognized in java”
Java version used is 8

What is data type 11?

karllessard · November 30, 2021, 5:04pm

“DataType 11” is the numeric value to represents the datatype of one of your tensor, which stands for QINT8 (quantized int8) in this case. See the full list of datatypes and their numeric representation here.

I’m not an expert of TFLite but I think it can only allocate or map tensors in Java of the following types: tensorflow/DataType.java at master · tensorflow/tensorflow · GitHub

saudet · November 30, 2021, 11:45pm

It is however supported by the C++ API, which we can use easily from Java with the JavaCPP Presets for TF Lite:

BTW, I think it’s actually referring to Float64:

github.com

bytedeco/javacpp-presets/blob/master/tensorflow-lite/src/gen/java/org/bytedeco/tensorflowlite/global/tensorflowlite.java#L310

      
        
              // Generally referring to data-reading issues in delegate serialization.
              // See tflite::delegates::Serialization.
              kTfLiteDelegateDataReadError = 6,
            
            
  // Generally referring to issues when the TF Lite model has ops that cannot be
              // resolved at runtime. This could happen when the specific op is not
              // registered or built with the TF Lite framework.
              kTfLiteUnresolvedOps = 7;
            
            
// Types supported by tensor
            /** enum TfLiteType */
            public static final int
              kTfLiteNoType = 0,
              kTfLiteFloat32 = 1,
              kTfLiteInt32 = 2,
              kTfLiteUInt8 = 3,
              kTfLiteInt64 = 4,
              kTfLiteString = 5,
              kTfLiteBool = 6,
              kTfLiteInt16 = 7,
              kTfLiteComplex64 = 8,

jyj902 · December 1, 2021, 2:25am

thanks was helpful !!

jyj902 · December 1, 2021, 2:27am

thanks was helpful!!