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Federated and decentralized machine learning offer the potential to extract valuable healthcare insights from siloed data without requiring the centralization of sensitive patient records, addressing long-standing privacy and governance challenges. This critical review assesses federated learning in healthcare through three lenses: privacy-preserving technologies, incentive mechanisms, and regulatory compliance frameworks. It examines whether the claims in existing literature are substantiated by real-world evidence from healthcare settings. The review reveals considerable enthusiasm for federated learning but identifies gaps, including incomplete implementation of privacy technologies, theoretical incentive mechanisms, and regulatory compliance often assumed but not validated. Additionally, real-world deployments are limited in scale and duration. The review concludes that the gap between federated learning's theoretical potential and clinical application remains significant, with overstated privacy claims and a lack of established frameworks for incentives and compliance.

Hospital accreditation requires organizations to demonstrate that clinical, operational, safety, and governance processes are aligned with externally defined standards. This demonstration depends on extensive internal documentation, including current policies, procedure manuals, audit reports, quality dashboards, meeting records, training logs, and department-level evidence files. Accreditation preparation is often conducted through manual document searches across fragmented repositories. This process is slow, resource-intensive, and vulnerable to missed evidence, outdated documents, inconsistent interpretations, and duplication of staff effort. This article proposes a retrieval-augmented generation system designed to support hospital accreditation preparation without replacing human judgment. The system indexes internal accreditation-relevant documents and allows authorized users to ask natural-language questions that receive synthesized, citation-backed responses. The proposed system includes a multi-source ingestion pipeline, a metadata-rich vector database, a permissioned large language model, a citation-grounding layer, and a human review dashboard. Together, these components would support evidence retrieval, gap identification, traceability, and accreditation team collaboration. The system could assist accreditation teams by reducing time spent locating and cross-referencing evidence. It would also be expected to improve the completeness and consistency of preparation materials by grounding responses in authoritative internal sources. A specialized retrieval-augmented generation system could help hospitals move from episodic accreditation preparation toward continuous audit readiness. Its value would depend on document quality, governance safeguards, human review, and rigorous evaluation in real accreditation workflows.