TY - EJOU AU - Wang, Yenjou AU - Cheng, Chihtan AU - Chang, Jia-Wei TI - From Documents to Decisions: Enterprise-Grade LLM Systems for Zero-Hallucination, Attributed Generation, and Regulatory Alignment T2 - Computer Modeling in Engineering \& Sciences PY - VL - IS - SN - 1526-1506 AB - As large language models (LLMs) become increasingly integrated into enterprise decision-making processes, structural pressures such as version drift, cross-source evidence integration, and regulatory accountability have shifted the primary challenge from isolated generative performance to system-level consistency, traceability, and governability. This paper systematically reviews key technological developments relevant to enterprise requirements, including document perception, retrieval-augmented generation (RAG), hybrid RAG-KG architectures, fine-grained attribution evaluation, and multi-agent coordination. The analysis demonstrates that the main obstacle to enterprise LLM adoption is not model capability, but rather the structural gap between fragmented technical modules and the need for high-reliability decision-making. In response, a risk-controlled data flywheel architecture is proposed that integrates perception, reasoning, verification, and governance layers. By converting reasoning outputs into observable risk signals and feeding them back into retrieval and structural components, this architecture establishes a continuous improvement loop. This approach provides a systematic deployment blueprint for enterprise-grade LLM systems, emphasizing traceability, accountability, and sustainable optimization in high-risk and long-term operational contexts. KW - Large language models (LLMs); retrieval-augmented generation (RAG); knowledge graph (KG); optical character recognition (OCR); enterprise AI systems; risk-controlled architecture; governance and compliance; attribution and faithfulness; multi-agent systems; data flywheel DO - 10.32604/cmes.2026.080888