Evaluation of efficiency of large-scale investment projects in the context of conceptual designing

In the article in terms of conceptual projections deals with the actual systemic problem in the evaluation of large investment projects in the improbability of the situation of uncertainty. Provides a mathematical valuation model that are treated as strategy game of the investor with “nature”, which is understood as the institutional environment of Russia. As the information base of the assessment used expert judgment, and computer-aided assessment procedures of selecting the most preferred investment solutions to apply IT. The practical use of the relevant methodology is illustrated by estimating the comparative effectiveness of large-scale railway projects planned to be realized as a means of transport to ensure the orientation of trade and economic relations of Russia with the countries ATR, and also the national security of their own country in the Arctic and the Far East.