Can we use this to publish a best-provider ranking?
Only after a separate, fair assessment with comparable evidence, scope and disclosures. Public platform descriptions establish an offering, not a completed supplier score.
Why does unknown contribute zero?
It makes the numerical total conservative while keeping missing evidence visible as U. Risk-management guidance supports documenting uncertainty, but this particular arithmetic is an editorial procurement choice.
Can we change the weights?
Yes: set them to the buyer’s priorities before reviewing proposals and keep the total at 100. The evaluation principles remain useful, but the weights are not prescribed by that source.
Does a score above 80 mean the model will work?
No: the score reflects the evidence and requirements assessed at that stage. Production quality still needs a protected test; group-aware splitting is one possible component of that evaluation design.
Should supplier payment influence the result?
No: record and disclose any commercial relationship, and keep it out of technical ratings. The central evaluation principle is to judge against the buyer’s task and evidence, consistent with a concrete error-led approach.