INTERACTION OF THE USER WITH THE INFORMATION SYSTEM. PART 3. EFFICIENCY EVALUATION

The article is the third in a series devoted to the issues of user interaction with the information system. The problem of calculating and evaluating the effectiveness of interactions is considered. For this, it is proposed to classify the group of compared information services (implementation of the interaction interface and information system) to a certain class for which the interaction model has been built. Then, in terms of the model, it is possible to calculate performance indicators – potency, as a guarantee of the user getting the result; operativeness, like the speed of entering and receiving data; resource preservation, as the moderation of the cognitive load on a person during work. The resulting metric values can be directly used to compare interactions. The article identifies 3 classes of common information services: request, control and gaming. For the first of them, as simple enough for research, an analytical model of interaction is built, and 3 implementation schemes are proposed, which differ in the density of filling the interface forms with input/output fields. Formulas for calculating indicators are displayed. An experiment is carried out to calculate the indicators of the effectiveness of interactions in each of the schemes for a different number of interface elements. The values of the indicators, as well as the root-mean-square efficiency for them and their pairs, are given in tabular and graphical form; also, the ranking of the efficiency of schemes by Pareto is considered. The analysis of the results obtained is carried out and conclusions are drawn that confirm the validity of the formulas obtained. Directions for further research are indicated.

Authors: P. A. Kurta

Direction: Informatics, Computer Technologies And Control

Keywords: Information system, interface, efficiency, indicators, model

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