{ "model_name": "distilbert-base-uncased", "max_length": 256, "batch_size": 32, "epochs": 5, "learning_rate": 2e-05, "weight_decay": 0.01, "test_size": 0.15, "random_seed": 42, "save_dir": "saved_model", "max_samples_per_class": 8000 }