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For better or for worse, rankings of institutions, such as universities, schools and hospitals, play an important role today in conveying information about relative performance. They inform policy de...
The number of certain rankings and hierarchies formed from labeled or unlabeled elements and sets
enumerative combinatorics rankings hierarchies
2010/9/17
Certain types of combinatorial rankings and hierarchies of labeled or unlabeled elements are presented along with their counting formulas.