The Copeland method as a relative and categorized ranking tool
| STATISTICA & APPLICAZIONI - 2011 - Special issue. Partial orders in applied sciences
This paper is concerned with introducing a modified Copeland method as a relative and categorized
ranking tool. Using the concept of partially ordered sets and the social choice theory, the Copeland
score ranking methodology is applied outside its usual political voting environment to rank objects
in the scientific field. The ranking methodology was assessed using 45 data sets with different number of objects and indicators and compared with other methods. Results show that the Copeland
method appears as a good and stable tool for ranking objects giving results comparable to the
Dominance and the Simple Additive Ranking methods with the advantage of lower sensitivity and
CPU time. Also, it solves the problem of isolated objects found in some Hasse diagrams.
Keywords: Copeland Method, Hasse Diagram, Categorized Ranking, Relative Ranking, Sensitivity.