Project Overview
Developed an AI chatbot to automate employee inquiries at "Rakuten Optimism," the company's largest internal event. Leveraged Dify (open-source LLM app development platform) to integrate Azure OpenAI Service with internal knowledge base.
Technical Challenges
Needed to immediately respond to event-specific "daily updated information" (preventing hallucinations).
Solutions:
Adopted RAG (Retrieval-Augmented Generation) architecture and built a pipeline that automatically ingests the latest manuals from SharePoint into Vector DB. Answer accuracy reached 81% in pre-release testing. Implemented escalation flow to human support for uncertain answers using Power Automate.
Business Impact
Resolved approximately 67% of total inquiries during the event period with Bot alone. Dramatically reduced burden on operations team and successfully concentrated resources on higher value-added tasks (VIP support, etc.).