You are using NeMo to fine-tune a pre-trained language model for a specific text generation task. You want to implement a custom data augmentation technique to improve the model's robustness. Which of the following approaches is most appropriate for integrating your custom augmentation within the NeMo framework?
Correct Answer: B
Creating a custom 'Dataset' class that inherits from 'nemo.core.Dataset' is the recommended and most maintainable way to integrate custom data augmentation in NeMo. This allows you to leverage NeMo's data loading and processing pipelines while seamlessly incorporating your specific augmentation logic within the '_getitem method. Modifying core NeMo files (A) is strongly discouraged. Using a separate pipeline (C) disconnects augmentation from the NeMo workflow. Monkey-patching (D) is brittle. Augmenting within the training loop (E) can be inefficient.