In 2006, Netflix announced a $1M prize competition to advance recommendation algorithms. The recommendation problem was simplified as the accuracy in predicting a user rating measured by the Root Mean Squared Error (RMSE). While that formulation helped get the attention of the research community in the area, it may have put an excessive focus on what is simply one of the many possible approaches to recommendations.
No takes yet. Share an insight, caveat, or question.
Xavier Amatriain (2014) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: