This repository contains code for decentralized PCA written for the new COINSTAC simulator (v4.0.0).

1. local.py - reads input data and parameters, triggers computation of the local PCA, then sends results to remote site.
2. remote.py - aggregates the local PCA results sent by local sites and returns the global PCA.
3. compspec.json - computation specifications.
4. ancillary.py - contains general computation subroutines utilized both by local and remote.
5. local_ancillary.py - contains functions that implement different steps of the local computation.
6. utils.py - utility functions.

• Python 3.6.6
• coinstac-simulator 4.0.0

1. Update npm:
   sudo npm i npm@latest -g
2. Install coinstac-simulator:
   sudo npm i -g [email protected]
3. Clone this repository:
   git clone https://github.com/rsilva8/decentralized-pca
4. Change directory:
   cd decentralized-pca
5. Build the docker image (Docker must be running):
   docker build -t decentralized-pca .
6. Run the code:
   sudo coinstac-simulator