The documentation of the PIPER tool and framework is available:

• in html at http://doc.piper-project.org/framework/1.0.1/html/.
• in pdf format at http://doc.piper-project.org/framework/1.0.1/user-guide.pdf

There is a wiki on the PIPER Gitlab with some advices and tutorials.

You can also check the PIPER youtube channel

PS: We are working on scientific publication for the final results (please be kind to the authors not to rush to publish results obtained with the PIPER tools or models).