An MLflow Model is a standard format for packaging machine learning models that can be used in a variety of downstream tools—for example, batch inference on Apache Spark and real-time serving through a REST API. The format defines a convention that lets you save a model in different flavors (Python Function, PyTorch, Scikit-learn, and so on), that can be understood by different model serving and inference platforms.
Most models are logged to a tracking server using the
mlflow.<model-type>.log_model(model, ...), loaded using the
mlflow.<model-type>.load_model(modelpath), and deployed using the
See the notebooks in Examples for examples of saving models and the notebooks below for examples of loading and deploying models.
You can also save models locally and load them in a similar way using the
mlflow.<model-type>.save_model(model, modelpath) API. For local models, MLflow requires you to use the DBFS FUSE paths for
modelpath. For example, if you have a DBFS location
dbfs:/diabetes_models to store diabetes regression models, you must use the model path
modelpath = "/dbfs/diabetes_models/model-%f-%f" % (alpha, l1_ratio) mlflow.sklearn.save_model(lr, modelpath)