Content diversity includes many variables, some of which cannot be contained in a mathematical formula. You cannot teach the algorithm to determine the reliability of the facts in the article, the level of expertise and authority of the author of the content, the quality of editing and usefulness.
Also, the quality of the content is the satisfaction of the needs of the visitor: the need for information, entertainment or communication. Accordingly, any materials can bring an unequal amount of benefit depending on the situation.
The plugin solves the problem based on the aspects that the creators laid there. And according to the parameters necessary for the customer, the quality of the content is determined.