# User Interface ## Data Provider * [Introduction](data_provider/index.rst) * [PyDataProvider2](data_provider/pydataprovider2.rst) ## API Reference * [Model Config Interface](api/trainer_config_helpers/index.md) ## Command Line Argument * [Use Case](cmd_argument/use_case.md) * [Argument Outline](cmd_argument/argument_outline.md) * [Detailed Descriptions](cmd_argument/detail_introduction.md) ## Predict * [Python Prediction API](predict/swig_py_paddle_en.rst)