Product Goal

The chatbot should help learners navigate the knowledge base and should also demonstrate production AI engineering skill.

Design Principles

• Answer from indexed site content.
• Cite the source notes.
• Refuse unsupported answers.
• Show related topics.
• Log retrieval quality signals.

Architecture

Question -> Rewrite -> Hybrid retrieval -> Rerank -> Prompt -> Answer -> Citation check

Evaluation

Use a golden dataset of questions with expected source documents. Track:

• Retrieval recall
• Citation correctness
• Answer groundedness
• Refusal quality
• Cost per conversation
• Latency

Future Paid Layer

Accounts can later support saved chats, private notes, guided learning paths, and paid advisory/service workflows.