RAG · AI DATA ENGINEERING
RAG is not a truth machine
Retrieval supplies candidates. Reliability requires admissible sources, faithful synthesis and tested boundaries.

01 · RETRIEVALWas the right, valid and authorised evidence found?
02 · GROUNDINGIs every material claim actually supported by a passage?
03 · ABSTENTIONDoes the system recognise insufficient evidence?
CORE METHOD
THE EVIDENCE CHAIN
Corpus, chunk, query, result, ranking, context, claim and citation are observed separately and tested together.
Assign every wrong answer to a precise pipeline stage, then test the dependent controls.