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In this example, we demonstrate how to train a model with sample-level differential privacy (DP) using Flower. We employ TensorFlow and integrate the tensorflow-privacy Engine to achieve sample-level differential privacy. This setup ensures robust privacy guarantees during the client training phase.
For more information about DP in Flower please refer to the tutorial. For additional information about tensorflow-privacy, visit the official website.
Start by cloning the example. We prepared a single-line command that you can copy into your shell which will checkout the example for you:
git clone --depth=1 https://github.com/adap/flower.git && mv flower/examples/tensorflow-privacy . && rm -rf flower && cd tensorflow-privacy
This will create a new directory called tensorflow-privacy
containing the following files:
-- pyproject.toml
-- client.py
-- server.py
-- README.md
Project dependencies are defined in pyproject.toml
. Install them with:
pip install .
flower-superlink --insecure
Start 2 Flower SuperNodes
in 2 separate terminal windows, using:
flower-client-app client:appA --insecure
flower-client-app client:appB --insecure
tensorflow-privacy hyperparameters can be passed for each client in ClientApp
instantiation (in client.py
). In this example, noise_multiplier=1.5
and noise_multiplier=1
are used for the first and second client respectively.
With both the long-running server (SuperLink) and two clients (SuperNode) up and running, we can now run the actual Flower App:
flower-server-app server:app --insecure