Quick Challenge to HR: do you already analyse the free text data in exit interviews and performance appraisals? 

Probably not as it is unstructured but most of the value is probably hidden there. And hubris to expect you can adopt AI if you can't analyse unstructured data but for those that can the linked article below covers:-

  1. Personalisation
  2. Workflow automation
  3. Improved recruitment
  4. Better prediction models

With added advantage of better analytics to plan, organise, direct and measure/control.

Also see "Unlocking HR Analytics"