This report synthesises findings from 14 peer-reviewed papers addressing the following research question: Does joint modeling of user reviews improve alignment metrics in LLM-based recommendation agents compared to instruction-tuned models without review context. In the last few years, the deep learning (DL) computing paradigm has been deemed the Gold Standard in the machine learning (ML) community. Moreover, it has gradually become the most widely used computational approach in the field of ML, thus achieving outstanding results on. 8 claims were extracted from source literature; 8 were independently verified against retrieved documents. An automated multi-reviewer quality assessment produced a score of 8.5/10. This report is a machine-generated literature synthesis and does not constitute original research.Research goal: Does joint modeling of user reviews improve alignment metrics in LLM-based recommendation agents compared to instruction-tuned models without review context?Autonomous literature synthesis. Automated review score: 8.5/10. Full text and citation available at Assignee Research.