|   | 1 |  | 
                  
                          |   | 2 | {{{ | 
                  
                          |   | 3 | Merge Algorithm  | 
                  
                          |   | 4 | output: correlated_event queue | 
                  
                          |   | 5 | global: event_scenario , MO_win_size | 
                  
                          |   | 6 |  | 
                  
                          |   | 7 | 1. pull the top event | 
                  
                          |   | 8 | 2. if OO_events queue == NULL | 
                  
                          |   | 9 | 3. new OO_events as event_scenario in event queue | 
                  
                          |   | 10 | 4. OO_events inherit event | 
                  
                          |   | 11 | 5. while event-queue ≠ NULL | 
                  
                          |   | 12 | { | 
                  
                          |   | 13 | 6. pull the top event | 
                  
                          |   | 14 | 7. if event.timestamp < ( OO_events.end_time + win_size ) | 
                  
                          |   | 15 | 8. Search a correlated_event in correlated_event queue that correlated_event.{ IP_dst, | 
                  
                          |   | 16 | port_dst,signature } == event.{ IP_dst, port_dst, signature } | 
                  
                          |   | 17 | 9. correlated_event _event.endtime  max(event.endtime, MO_event.endtime) | 
                  
                          |   | 18 | 10. correlated_event.reference append (event.id ) | 
                  
                          |   | 19 | 11. correlated_event.IP_src  correlated_event. IP_ src ∪ event. IP_ src | 
                  
                          |   | 20 | correlated_event t.port_src  correlated_event. port_src ∪ event. port_ src | 
                  
                          |   | 21 | 12. else | 
                  
                          |   | 22 | 13. new OO_events as event_scenario in event queue | 
                  
                          |   | 23 | 14. OO_events inherit event | 
                  
                          |   | 24 | } | 
                  
                          |   | 25 | 15 return correlated_event queue | 
                  
                          |   | 26 |  | 
                  
                          |   | 27 | … | 
                  
                          |   | 28 |  | 
                  
                          |   | 29 | }}} | 
                  
                          |   | 30 |  |