The method of solution of the problem of additional information request

The article considers a problem of additional information request, usually being solved in diagnostics process for reduction of number of diagnosis hypotheses. In practice during solution of these two tasks it is important to consider all types of the cause-and-effect relations, variability of signs values for a time, influence of events on dynamics of values of signs. The offered algorithm of solution of this task is based on choosing differentiators among the known measurable signs. Identification of differentiators is made with use of knowledge of internal processes developing and external events' influence on them. We will apply such algorithm to the solution of a problem of request of additional information for situations recognition, classification and diagnostics in various spheres of activity.