Please use only the new documentation, this one in´s not updated anymore.
For a general introduction and information about the Personalization Solution you can find detailled documentation under https://doc.ez.no/display/EZSERVICES/eZ+Personalization+Solution
For the EzSystemsRecommendationBundle you can find the documentation under https://doc.ezplatform.com/en/latest/guide/recommendation/ as this one won't be updated any more.
Thx in advance,
the YOOCHOOSE team