I'm trying to work out a solution to work out a better attribution model for each user registration on my website.
When an user completes a registration they are taken to /register/complete/[user_id]
My current solution is to pull all visits to /register/complete with the RGoogleAnalytics package querying for page path and campaign without any sampling.
However, it doesn't account for example users that might have been shown/clicked on a facebook ad a few days before and either googled or visited the site directly to register.
I'm searching for a solution which can attribute each registration to the mix of facebook and google adwords campaigns
Any help is greatly appreciated.