As part of my Design Leadership role at Adobe I recently ran our team through a workshop to create a set of provisional personas for our next-gen product.
The following is a video based on the slide deck. You can view the original slides at the link below:
https://www.dropbox.com/s/vvqdkt8upf12hyh/07.17.14_Provisional-Personas.pdf?dl=0
The following image shows the results of our workshop in which 10 provisional groups that were created. Each provisiona group contains 4 essential mapping criteria with which each persona is defined.