the following arguments are required: --dataset_directory

The statement "the following arguments are required: --dataset_directory" typically appears in the context of command-line interfaces for machine learning or data processing tools, like Python's scikit-learn or TensorFlow. The `--dataset_directory` argument is a common option that specifies the path to where the dataset files or directories are stored on your computer.

When running a script or training a model, this flag is needed because these tools need access to the actual data before they can process it. For example, if you're working with image classification and your dataset is organized into separate folders for each class, you would provide the path to that main directory containing those subfolders.

Here's an example usage:

python train_model.py --dataset_directory /path/to/your/dataset