Patent ID: 8364622

Claim:
A method comprising: receiving data associated with a plurality of samples, the samples including one or more events, at least some of the samples including a plurality of events; selecting an upper co-occurrence threshold; calculating E(i,i), a first number of samples in which a first event EventID(i) occurs; calculating E(j,j), a second number of samples in which a second event EventID(j) occurs; calculating E(i,j), a third number of samples in which the first event EventID(i) and the second event EventID(j) occur together; selecting at least two events EventID(i) and EventID(j) for which E(i,j) divided by the lesser of E(i,i) and E(j,j) is at or above the upper co-occurrence threshold; and assigning at least one of EventID(i) and Event ID(j) to a first trait T1.