• Graphical evaluation methods have been included. This relatively new class of methods depends totally on graphics for interaction with the user. These methods are often easier to communicate because ranking is performed visually instead of mathematically.

• Value functions are the main addition to the tool box. Experiences in the last five years have shown that value functions provide a valuable means of communication between the technical expert and the decision analyst. Value functions are well established in the literature and can be found in other decision support software as well. However, a unique feature of DEFINITE is a procedure that systematically leads the expert through a number of rounds of an interactive assessment session and uses an optimization approach to integrate all information provided by the experts to a full set of value functions.

• Another unique feature of DEFINITE is the extensive number of tools for sensitivity analysis. This new version will allow for analysis of dependencies between criteria and will include these dependencies in sensitivity analysis.

DEFINITE version 3.1 now available