Similar to how skill training works in EVE Online, Crowfall uses a time-based skill-up system that accrues points whether or not the player is online. The dev team took some time recently to evaluate how the system was working out in testing and decided that it could benefit from some improvements.
Content retrieved from: http://massivelyop.com/2018/04/21/crowfall-improves-its-time-based-skill-leveling/.