Technically the DCA based systems as I see, are time sensitive systems, I can name them soft-real-time systems. The first part of DCA algorithm collects the info, as samples, from the environment it is monitoring (i.e. a host in computer network, or a process in the operating system). So the antigen IDs, which are gathered at the "time" it is monitored and analyzed by the first part of the DCA algorithm, are used in the second part of the DCA algorithm, to find MCAV values per antigen type.
Please refer again to the section of (5.3. Antigens) of my paper.