1. Copyright © 2002 Cycorp Events in Cyc Roles and Event Predicates Actor Slots Sub-events OE Example: Events and Roles

2. Copyright © 2002 Cycorp Sub-events An event can have sub-events –Roles from the main event may change in sub-events Participants of the main event may have the same role(s), different roles, or no role –Sub-events are temporally subsumed by their main event, but sub-events have various relationships with each other –They may be cotemporal, sequential, overlapping

3. Copyright © 2002 Cycorp Atime-slice of the #$TrafalgarSignals (1) A time-slice of the #$TrafalgarSignals (1) #$NelsonSignalling At1215 “Engage the enemy more closely.” #$NelsonSignalling At1215

4. Copyright © 2002 Cycorp Atime-slice of the #$TrafalgarSignals (1) A time-slice of the #$TrafalgarSignals (1) #$BritishFleet Reads1215 Signal “Engage the enemy more closely.” #$NelsonSignalling At1215

5. Copyright © 2002 Cycorp #$isa#$VisualCommunicating#$SignalProcessing Cotemporal sub-events subEvents #$Nelson SignallingAt 1215 #$TrafalgarSignals-British subEvents #$BritishFleet Reads1215 Signal cotemporal #$performedBy#$Signalman-HMSVictory#$BritishFleetAtTrafalgar #$senderOfInfo#$HoratioNelson#$HoratioNelson #$recipientOfInfo#$BritishFleetAtTrafalgar#$BritishFleetAtTrafalgar

6. Time-slices of the #$TrafalgarSignals #$NelsonSignals HMSMarsAt0941 “Take station of Royal Sovereign.”

7. Copyright © 2002 Cycorp Time-slices of the #$TrafalgarSignals #$NelsonSignals HMSMarsAt0941 “Take station of Royal Sovereign.” “Take station bearing from the Admiral as pointed out and make more sail.” #$CollingwoodSignals TheLeeColumnAt0945

8. Copyright © 2002 Cycorp #$isa#$VisualCommunicating #$VisualCommunicating #$TrafalgarSignals- British #$NelsonSignals HMSMarsAt0941 subEvents #$Collingwood SignalsLeeColumn At0945 subEvents Sequential (non-cotemporal) sub-events startsAfter EndingOf #$performedBy#$Signalman-HMSVictory#$Signalman-HMSRoyalSovereign #$senderOfInfo#$HoratioNelson#$Collingwood #$recipientOfInfo#$HMSMars, #$Collingwood#$LeeColumn

9. Copyright © 2002 Cycorp Summary #$SubProcessSlots relate sub-events to events Cotemporal sub-events Sequential (non-cotemporal) sub-events