In the thesis matrices over the tropical semiring are studied. The tropical semiring and matrices over this semiring are introduced. The connection between tropical matrices and weighted directed graphs is established. Tropical eigenvalues and the corresponding tropical eigenspaces are characterized. The acquired knowledge is used on pairwise comparison matrices. To obtain the score vector for the alternatives, three methods and their properties are examined. The methods are the PerronRank, the HodgeRank and the TropicalRank. Connections and differences between these methods are highlighted.
|