Description: The article proposes a methodical approach to the clustering of information messages, the use of which during the implementation of measures to counter the informational and psychological effects of the enemy will allow to accelerate the implementation of the cycle of John Boyd (loop OODA - Observation, Orientation, Decision, Action). To accelerate the OODA cycle, parallel execution of the first and second stages - Observation and Orientation - is proposed. In this case, clustering of information messages (messages) is proposed to be implemented immediately after their receipt. Methods of expert evaluation, cluster analysis, theory of sets and matrices are implemented in the methodical approach, which allows to select a cluster from a common array of information messages, to determine the core and center of the cluster, to evaluate the connectivity of messages in the cluster, and, in the future, to formulate proposals for the neutralization of the negative informational and psychological impact of information messages for each cluster. The methodological approach involves several stages. So, in each of the incoming information messages, the presence of certain information features is checked. The coefficients of communication of information messages are determined with each other and the integrated connection coefficient of each message from the general mass of information messages is calculated. On the basis of the analysis of the integrated connection coefficients, the messages bound by the information features are determined. The expert estimation method determines the coefficients of the importance of the informational signs of messages. Information messages with the highest values of these coefficients refer to the kernel of the corresponding message cluster. Messages that have the largest integral indexes of importance in the respective clusters and the maximum integrated message factor ratios are considered to be the centers of the corresponding clusters. The approach allows you to identify the most important and informative informational messages from which it is necessary to start analysis and delete those messages that are not assigned to this cluster. This will allow at an early stage to identify the signs of the implementation of information and psychological effects of the enemy, determine the orientation of these information messages and immediately "reject" messages that are not threatened.
Keywords: informational message, informational and psychological influence, informational and psychological operation, cluster, Boyd cycle, OODA, Observation–Orientation–Decision–Action
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