Error when trying to train a custom model

[silencesys]

Hi,

I noticed that you probably do not reply to issues very often. I'll have to give it a try though.

I am getting this error:

2023-06-27 18:38:22,087 - INFO - {'morphlex_embeddings_file': 'data/extra/dmii.vectors', 'training_files': ('training_data/training.tsv',), 'test_file': '../tests.tsv', 'output_dir': './MODEL', 'run_name': None, 'adjust_lengths': 0, 'gpu': False, 'known_chars_file': './data/extra/characters_training.txt', 'known_tags_file': './data/extra/all_tags.txt', 'save_model': True, 'save_vocab': True, 'tagger': False, 'tagger_weight': 1.0, 'tagger_embedding': 'bert', 'tagger_ignore_e_x': True, 'lemmatizer': False, 'lemmatizer_weight': 1.0, 'lemmatizer_accept_char_rnn_last': False, 'lemmatizer_hidden_dim': 128, 'lemmatizer_num_layers': 1, 'lemmatizer_char_attention': True, 'lemmatizer_state_dict': None, 'tag_embedding_dim': 0, 'tag_embedding_dropout': 0.0, 'char_lstm_layers': 0, 'char_lstm_dim': 128, 'char_emb_dim': 64, 'morphlex_freeze': True, 'pretrained_word_embeddings_file': None, 'word_embedding_dim': 0, 'bert_encoder': None, 'main_lstm_layers': 1, 'main_lstm_dim': 128, 'emb_dropouts': 0.0, 'label_smoothing': 0.1, 'learning_rate': 5e-05, 'epochs': 20, 'batch_size': 16, 'optimizer': 'adam', 'scheduler': 'multiply'}
2023-06-27 18:38:22,089 - INFO - Using 1 CPU threads
2023-06-27 18:38:22,104 - INFO - EncodersDecoders(
  (encoders): ModuleDict()
  (decoders): ModuleDict()
)
2023-06-27 18:38:22,104 - INFO - Trainable parameters=0
2023-06-27 18:38:22,104 - INFO - Not trainable parameters=0
2023-06-27 18:38:22,105 - INFO - Label smoothing=0.1
2023-06-27 18:38:22,105 - INFO - Setting optmizer=adam
Traceback (most recent call last):
  File "/usr/local/bin/pos", line 8, in <module>
    sys.exit(cli())
  File "/usr/local/lib/python3.10/dist-packages/click/core.py", line 1130, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python3.10/dist-packages/click/core.py", line 1055, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python3.10/dist-packages/click/core.py", line 1657, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python3.10/dist-packages/click/core.py", line 1404, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python3.10/dist-packages/click/core.py", line 760, in invoke
    return __callback(*args, **kwargs)
  File "/usr/local/lib/python3.10/dist-packages/pos/cli.py", line 281, in train_and_tag
    optimizer = get_optimizer(model.parameters(), kwargs["optimizer"], kwargs["learning_rate"])
  File "/usr/local/lib/python3.10/dist-packages/pos/train.py", line 50, in get_optimizer
    return Adam(parameters, lr=lr)
  File "/usr/local/lib/python3.10/dist-packages/torch/optim/adam.py", line 137, in __init__
    super(Adam, self).__init__(params, defaults)
  File "/usr/local/lib/python3.10/dist-packages/torch/optim/optimizer.py", line 61, in __init__
    raise ValueError("optimizer got an empty parameter list")
ValueError: optimizer got an empty parameter list

with this script

!pos train-and-tag \
  --morphlex_embeddings_file data/extra/dmii.vectors \
  training_data/*.tsv \
  ../tests.tsv \
  ./MODEL

I have followed the instructions in the Readme. Are there any instructions missing or am I doing something wrong? I am also trying to run this on Google Colab.