A RAG That Says “Not in This Document” Has to Show Four Kinds of Evidence

In the field of enterprise document intelligence, recent views suggest that RAG models must provide four specific pieces of evidence to support the conclusion when answering “the information is not in the document”. This standard considers it a Bug to confidently give incorrect answers, and a simple denial without basis is equally serious. Each type of evidence should correspond to a specific fact, collectively proving that the judgment of “not in the document” is valid. This content was originally published on the Towards Data Science platform.