At the LID developers' Wiki, I've added a page, Modeling LID, where i have entered the rough beginning of a project to build a model of identity data.

When this project reaches a stable state, that page will provide an overview of that model and links to detailed specification of that model. For now, it amounts to thinking out loud. So, that page violates the guideline that wiki pages should be short. Wiki enables your feedback and ideas to be entered right there, by changing or replacing my text. Or by entering text at the discussion tab.

I'll blog a bit here about the modeling considerations that go into this model.