Loss error in exercise 10

Course Q&A TensorFlow: Advanced Techniques Specialization Advanced Computer Vision with TensorFlow
3

Hello Joel,

  1. Incorrect code for (kindly use # assign the name (string) of the directory containing the training images) for the below code line, training is incorrect code
    define the path (string) for each image

  2. Why have your remove the below line from your grader cell,
    <<### START CODE HERE (Replace instances of None with your code ###
    <# Assign the zombie class ID
    removing START CODE HERE can cause metadata error while grading

  3. The below code is incorrect for(CHECK THE HINT SECTION)
    <<# copy the checkpoint to the test_data folder models/research/object_detection/test_data/

  4. Incorrect code(CHECK THE HINT SECTION)
    <<# define the path to the .config file for ssd resnet 50 v1 640x640

  5. Incorrect code
    <<# Read in the object stored at the key ‘model’ of the configs dictionary

  6. Under Header Restore Checkpoint, incorrect code for checkpoint_path.

  7. Don’t hard code the below codes by recalling prefixes_to_train as at one place you used it as prefix
    <<# define a list that contains the layers that you wish to fine tune
    the correct code is this :point_down:
    if v.name.startswith(‘WeightSharedConvolutionalBoxPredictor/WeightSharedConvolutional’):

  8. This grader cell has incomplete code
    <@tf.function
    <<def train_step_fn(

Your preprocess image step is incomplete you didn’t not create a image list.
HINT: create a list of image where your processed_img and true shape are preprocess and then preprocessed image list is append with processed img which is then converted to true_shape_list with true shape using append again.

After this comes your preprocesses image tensor concat which you have written already.

Do all these corrections

Let me know once your issue is resolved.

Regards
DP