Web page rankings are determined by algorithms that include a large number of objective and subjective components.
I consider a search engine to be similar to a librarian or a restaurant or a movie reviewer offering a combination of objective and subjective suggestions.
Recently, there have been some Google-related antitrust issues in the news. In my opinion, the more Google claims page rank is an objective, scientific standard the easier it may be to prove its search results are noncompetitive.
Can an organization such as the US National Institute of Standards and Technology measure and standardize web page relevance?
In my opinion, they probably could not because page relevance includes objective and subjective attributes.
Suggestion: Google should adopt a position that its page rank is similar to a 1) Michelin Guide, 2) Miss USA, or 3) Oscar Awards committee decision.
Here is my original SETI research.