Multidimensional unfolding analyses of ranking data for groups

Implementation of X-Tree Structure for Multidimensional Data Ranking

In this modern world, travelling has become as normal routine for most of the people in the cities. At the same time, frequency of happening of accidents also increasing alarmingly. Also one cannot avoid health care and should take proper health checks in hospitals periodically. At the time of accidents, to save precious lives, we must know better hospitals nearby. In that context, in this pape...

the use of appropriate madm model for ranking the vendors of mci equipments using fuzzy approach

abstract nowadays, the science of decision making has been paid to more attention due to the complexity of the problems of suppliers selection. as known, one of the efficient tools in economic and human resources development is the extension of communication networks in developing countries. so, the proper selection of suppliers of tc equipments is of concern very much. in this study, a ...

Multidimensional Scaling and Unfolding

Multidimensional scaling (MDS) techniques are statistical techqnies that convert information about distances between a number of objects into a spatial representation of these objects. These techniques were first discussed systematically in psychometrics [Torgerson, 1958; Coombs, 1964] as multidimensional extensions of univariate psychophysics and sensory scaling. Because they needed considerab...

Multidimensional Unfolding: Determining Configuration from Complete Rank Order Preference Data

Within the model of isotonic space, a principle is presented which generalizes the unfolding technique to the multidimensional ease. The availability of exhaustive configurational solutions given complete data is pointed out. Finally three criteria are suggested for the choice of a particular solution from among the set of all solutions, which are applicable in the case either of complete or in...

Sensitivity in ranking for perturbations of data in DEA