TraMineR (version 1.0)

seqeapplysub: Applying Subsequences to Event Sequences

Description

Apply every subsequences subseq to each event sequences seq and compute the result of the given method.

Usage

seqeapplysub(subseq, seq, method = "count", maxGap = -1, windowSize = -1, ageMin = -1, ageMax = -1, ageMaxEnd = -1)

Arguments

subseq

A list of subsequences

seq

A list of event sequences

method

Type of the result expected, should be one of "count", "presence" or "age"

maxGap

The maximum time gap between two group of event. If equal to -1 (default), it won't be considered.

windowSize

The maximum window (subsequence) time. If equal to -1 (default), it won't be considered.

ageMin

Can be used to set a time period. If equal to -1 (default), it won't be considered.

ageMax

Can be used to set a time period. If equal to -1 (default), it won't be considered.

ageMaxEnd

Can be used to set a time period. If equal to -1 (default), it won't be considered.

Value

• The return value is a matrix where every row correspond to a sequence (row names are set accordingly) and each column correspond to a subsequence (col names are set accordingly). The matrix store the results of the count method.

Warning

Event sequence analysis module is still experimental

Details

They are three methods implemented : count{Count the number of occurrence of a given subsequences in an event sequence.} presence{Returns one if the subsequence is present, 0 otherwise.} age{Returns the age of appearance of a subsequence in an event sequence. In case of multiple possiblities, the age of the first occurences is returned. When the subsequences is not in the sequence, -1 is returned.} It is possible to specify time constraints using maxGap, windowSize, ageMin, ageMax and ageMaxEnd. If so, two event should not be separated by more than maxGap and the whole subsequence should be included in a maximum time of windowSize. The other parameters specify the start and end age of the subsequence, it should start between ageMin and ageMax and finish before ageMaxEnd.

See Also

See Also as seqecreate for more information on how to use event sequence analysis module

Examples

#loading data
data(actcal.tse)
#creating sequences
actcal.seqe<-seqecreate(actcal.tse$id,actcal.tse$time,actcal.tse$event)
##printing sequences
actcal.seqe[1:10]

#Looking for frequent subsequences
fsubseq<-seqefsub(actcal.seqe,pMinSupport=0.01)


#counting the number of occurence of each subsequence
msubcount<-seqeapplysub(fsubseq$subseq,actcal.seqe,method="count")
#First lines...
msubcount[1:10,1:10]
#Presence-absence of each subsequence
msubpres<-seqeapplysub(fsubseq$subseq,actcal.seqe,method="presence")
#First lines...
msubpres[1:10,1:10]

#age of first appearance of each subsequence
msubage<-seqeapplysub(fsubseq$subseq,actcal.seqe,method="age")
#First lines...
msubage[1:10,1:10]

#counting the number of occurence of each subsequence in summer
msubcount<-seqeapplysub(fsubseq$subseq,actcal.seqe,method="count",ageMin=6, ageMax=9, ageMaxEnd=9)
msubcount[1:10,1:10]