"""
训练脚本包

- dataset.py:               CRNNDataset / CaptchaDataset / RegressionDataset 通用数据集类
- train_utils.py:            CTC 训练通用逻辑 (train_ctc_model)
- train_regression_utils.py: 回归训练通用逻辑 (train_regression_model)
- train_normal.py:           训练普通字符识别 (LiteCRNN - normal)
- train_math.py:             训练算式识别 (LiteCRNN - math)
- train_3d_text.py:          训练 3D 立体文字识别 (ThreeDCNN)
- train_3d_rotate.py:        训练 3D 旋转回归 (RegressionCNN)
- train_3d_slider.py:        训练 3D 滑块回归 (RegressionCNN)
- train_classifier.py:       训练调度分类器 (CaptchaClassifier)
"""