The following codes show how to perform post-training quantization with vai_q_tensorflow2 API. You can find a full example here.
model = tf.keras.models.load_model(‘float_model.h5’)
from tensorflow_model_optimization.quantization.keras import vitis_quantize
quantizer = vitis_quantize.VitisQuantizer(model)
quantized_model = quantizer.quantize_model(calib_dataset=calib_dataset,
calib_step=100,
calib_batch_size=10,
**kwargs)
- calib_dataset
-
calib_dataset
is used as a representative calibration dataset for calibration. You can use full or part of theeval_dataset
,train_dataset
, or other datasets. - calib_steps
-
calib_steps
is the total number of steps for calibration. It has a default value of None. Ifcalib_dataset
is atf.data dataset
, generator, orkeras.utils.Sequence
instance and steps is None, calibration will run until the dataset is exhausted. This argument is not supported with array inputs. - calib_batch_size
- calib_batch_size is the number of samples per batch for
calibration. If the "calib_dataset" is in the form of a dataset, generator, or
keras.utils.Sequence
instances, the batch size is controlled by the dataset itself. If thecalib_dataset
is in the form of anumpy.array
object, the default batch size is 32. - **kwargs
-
dict of the user-defined configurations of quantize strategy. It will override the default built-in quantize strategy. For example, setting
bias_bit=16
will let the tool to quantize all the biases with 16bit quantizers. See the vai_q_tensorflow2 Usage section for more information of the user-defined configurations.