Notice of RetractionCost estimating the quality of stochastic network projects´ portfolio

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

A highly complicated project management system in R&D design offices including several simultaneously realized PERT-COST type network projects, is considered. The projects are of different importance and significance; for each project its corresponding priority index is pregiven. The total budget at the project management disposal to carry out all the projects, is limited. Given for each project its priority value, the problem is to determine optimal budget assignments and optimal due dates of accomplishing each project, to maximize the weighted sum of the projects´ utilities. Thus, the problem centers on maximizing the system´s utility by implementing the harmonization model for each single project, which has been outlined in. The problem´s solution is based on redistributing the pregiven total project´s portfolio budget among the projects in order to maximize the summarized quality of the portfolio.