mnist_keras

Training Handwriting Recognition on MNIST Dataset with Keras

Setup

1. If you are running OSS Metaflow install pip install metaflow; If you are runnning it on the Outerbounds Platform, run pip install outerbounds

2. Install other dependencies

   pip install -r requirements.txt

Executing the Flow

python flow.py run  

Salient Features

• Metaflow Checkpointing with Keras Callbacks: This flow uses the @checkpoint functionality in tandem withe Keras's callback mechanism. The MetaflowKerasCheckpoint class can be plugged into any Keras model called within a Metaflow flow execution to enable checkpointing.
• Checkpoint Loading in subsequent @steps: The callback exposese the lastest_checkpoint reference object which is returned by Checkpoint().save() or current.checkpoint.save(). This reference object can be set as a data artifact in Metaflow and then be loaded in subsequent steps. The flow.py demonstrates how to load the checkpoint in the test step by calling @model(load="best_checkpoint").