This report synthesises findings from 13 peer-reviewed papers addressing the following research question: What is the effect of continuous user feedback integration on natural language understanding accuracy metrics in open-environment dialogue systems. 9 claims were extracted from source literature; 9 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: What is the effect of continuous user feedback integration on natural language understanding accuracy metrics in open-environment dialogue systems?Autonomous literature synthesis. Automated review score: 8.5/10. Full text and citation available at Assignee Research.