Adds the sequence length (number of transitions) and total number of events of event sequences to the data attribute of a
subseqelist event sequence object.
Logical: Should a column with average number of occurrences also be added?
An event sequence object is an ordered list of transitions, with each transition a non-ordered list of events occurring at a same position.
Average occurrences by sequence may be useful when counts report number of occurrences rather than number of sequences containing the subsequence.
fsubseq updated with the additional information.
Nicolas M<c3><bc>ller and Gilbert Ritschard
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data(actcal.tse) actcal.seqe <- seqecreate(actcal.tse[1:500,]) ##Searching for frequent subsequences appearing at least 30 times fsubseq <- seqefsub(actcal.seqe, min.support=10) fsubseq <- seqentrans(fsubseq) ## dispaying only those with at least 3 transitions fsubseq[fsubseq$data$ntrans>2] ## dispaying only those with at least 3 events fsubseq[fsubseq$data$nevent>2] ## Average occurrences when counting distinct occurrences ct <- seqeconstraint(count.method="CDIST_O") fsb <- seqefsub(actcal.seqe, min.support=10, constraint=ct) fsb <- seqentrans(fsb, avg.occ=TRUE) fsb[1:10,]
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