Process for detecting complete sequences and failed sequences in a situation recognition sequence

A process for detecting failed sequences in a situation recognition system, including at least one situation, said situation comprising a list of events and time constraints linking these events, for which a sequence of events is created in a memory that contains a list of events expected in the situation, and intervals between possible dates of occurrence of each of these events, said intervals being initially equal to !-.infin., +.infin.›, said process managing an internal clock that differs from universal time, representing the current date of the system, said process comprising:

• updating the sequences of events for each situation upon each occurrence of an event, said updating causing:
• updating the current date to the date at which the event has occurred;
• updating, for each sequence of events memorized, the intervals between possible dates of occurrence of events not yet recorded as a function of the time constraints and the new current date;
• detecting all the sequences of events for which one of the intervals is empty, said sequences of events for which one of the intervals is empty being designated as failed sequences;
• creating new sequences of events integrating the new event;
• and
• detecting complete sequences.