Support Counting for Sequences
Compute the relative or absolute support of an arbitrary collection of sequences among a set of transactions with additional sequence and temporal information.
# S4 method for sequences support(x, transactions, type= c("relative", "absolute"), control = NULL)
# S4 method for sequences supportingTransactions(x, transactions, …)
- an object.
- an object of class
- a character value specifying the scale of support (relative or absolute).
- a named list with logical component
verbosespecifying if progress and runtime information should be displayed and list component
- currently not used.
Provides support counting using either method ptree (default), or
idlists (for details see the reference in
If sequences are used for
transactions missing event times
are replaced with the order indexes of events.
The supporting sequences are all sequences (of transactions) of which the sequence representing the association is a subset of.
supportingTransactions does not support timing
numeric vector the elements of which
correspond with the elements of
supportingTransactions an object of class
tidLists containing one sequence ID list per
## continue example example(cspade) ## recompute support s <- support(s2, zaki, control = list(verbose = TRUE, parameter = list(maxwin = 5))) data.frame(as(s2, "data.frame"), support = s) ## use default method k <- support(s2, zaki, control = list(verbose = TRUE)) table(size(s2), sign(k - s)) ## the same s <- supportingTransactions(s2, zaki) itemFrequency(s)