The methodology of automatic detection of the event basis of information operations, reflected in
thematic information flows, is described. The presented methodology is based on the technologies for
identifying information operations, the formation of the terminological basis of the subject area, the application
of cluster analysis with cluster centroids, determined by analyzing the terminology of the information flow. The
clusters formed in this way reflect the main events occurring during the information operations and reveal the
technique for their implementation.
Keywords: Information operations, Information flows, Identification of events, Cluster analysis, Subject domain model