Abstract: The article discusses the problem of developing (forming) an efficiency function (aggregated criterion, convolution of
criteria) of the sections included in the Ulan Bator Railway (UBZhD), which would contain specially weighted private characteristics
of the quality of the functioning of these sections. The solution to this problem is carried out on the basis of the information and
computational technology (ICT) developed at the Irkutsk State University of communication lines for multi-criteria assessment of the
effectiveness of the functioning of complex socio-economic and technical systems. IWT makes it possible at the model level to
evaluate this efficiency by one number (expressed, for example, as a percentage), which opens up ample opportunities in the
management of these systems, since it allows performing, in particular, a large-scale multifactorial comparative analysis of the
activities of homogeneous organizational and other structures and on this basis solutions of the most varied nature. The function of
the effectiveness of the functioning of the UBZhD sections has been built, which includes weighted private indicators of such
efficiency: loading, static load, unloading, dispatch of cars, transportation of passengers, idle time of cars with one processing, idle
time of local cars, idle time of transit cars with processing, idle time of transit cars without processing. Based on this function, a
100% scaled efficiency is calculated for each site. Moreover, all preference indicators are sorted in descending order of importance.
Such information, generated on a yearly basis, can be very useful to the UBZhD leadership for making a wide range of managerial,
including personnel, decisions. Similar work can be performed in the interests of RAO Russian Railways.