update int8 onnx model and readme

Signed-off-by: dujun <[email protected]>

README.md

@@ -61,12 +61,14 @@ This is an INT8 ONNX model quantized with [Intel® Neural Compressor](https://gi
 
 The original fp32 model comes from the fine-tuned model [roberta-base-mrpc](https://huggingface.co/Intel/roberta-base-mrpc).
 
+The calibration dataloader is the eval dataloader. The calibration sampling size is 100.
+
 #### Test result
 
 |   |INT8|FP32|
 |---|:---:|:---:|
-| **Accuracy (eval-f1)** |0.9073|0.9138|
-| **Model size (MB)**  |243|476|
+| **Accuracy (eval-f1)** |0.9100|0.9138|
+| **Model size (MB)**  |294|476|
 
 
 #### Load ONNX model:

model.onnx

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:51de3a4577a50af94e72dd8a75d77b9145726d3f83de336a2573fd12180c6075
-size 254669454
+oid sha256:315f3dfad2e4344cfc4688634a4909c0505467bb3cec620509ad204af3662cea
+size 307815333