PVT model not training..

[ma7555]

Describe the bug PVT model does not train.

To Reproduce Steps to reproduce the behaviour:

import tfimm 
import tensorflow_datasets as tfds
import tensorflow as tf

def resize_normalize(x, y):
    x = tf.image.resize(x, (224, 224)) / 255
    return x, y

train_ds = tfds.load('imagenet_v2', 
               split='test', 
               as_supervised=True)
train_ds = train_ds.map(resize_normalize).batch(32)

model = tfimm.create_model("pvt_tiny", pretrained=None)

model.compile(optimizer=tf.keras.optimizers.Adam(1e-3), loss="sparse_categorical_crossentropy", metrics=["accuracy"])
model.fit(train_ds)

Epoch 1/5
313/313 [==============================] - 67s 187ms/step - loss: 15.6424 - accuracy: 6.0000e-04
Epoch 2/5
313/313 [==============================] - 60s 191ms/step - loss: 16.2130 - accuracy: 0.0010
Epoch 3/5
313/313 [==============================] - 60s 191ms/step - loss: 16.2144 - accuracy: 0.0010
Epoch 4/5
313/313 [==============================] - 60s 191ms/step - loss: 16.2418 - accuracy: 0.0010
Epoch 5/5
313/313 [==============================] - 60s 191ms/step - loss: 16.2417 - accuracy: 0.0010

Expected behaviour Convergance of model

Desktop (please complete the following information):

• OS: Windows 11
• Repo version: 0.2.7
• TensorFlow version with CUDA/cuDNN [e.g. TF 2.9.1 with CUDA 11.2]

Also note that setting the LR to 1e-4 as the paper does not solve the problem.