[ Formula structure ]
The public formula describes structure.
- NTR = aac_risk(visible_form, intended_action, context_inference, support)
- Private calibration, weighting, and evidence ranking stay protected.
[ How to read it ]
The metric supports screening, not certification.
- A high NTR means recognition of the visible object does not reliably produce the intended action meaning.
- A low NTR means the visible referent, action mapping, and support cues make transfer more direct before signage or interface context does extra work.
- Every reading depends on declared context and evidence quality.
- Human validation remains first-order evidence.