glb.sformlist: Generate a list of global S-form sequence statistics.
In informR: Sequence Statistics for Relational Event Models

Description Usage Arguments Details Value Note Note Note Note Author(s) See Also Examples

Generates a list of S-form sequence statistics constructed by pooling multiple sform regular expressions into single statistics. Output is not used directly but is passed to other methods.

1	glb.sformlist(evl, sforms, new.names, dichot, cond=FALSE, interval=FALSE, warn=TRUE)

`evl`	An eventlist passed from `gen.evl()`
`sforms`	A list of character strings of S-form regular expressions grouped by a common attribute. See details.
`new.names`	A character string equal to the length of sforms ideally representing the common attributes of each pooled set of sforms.
`dichot`	Logical. Should the resulting statistics be dichotomized? Defaults to TRUE. See details.
`cond`	Logical. Should the prefix be dropped from the resulting statistics? Defaults to FALSE.
`interval`	Logical. Pass interval flag to gen.sformlits? Defaults to FALSE.
`warn`	Logical. Should warnings be issued? Defaults to TRUE.

As with gen.sformlist(), regular expressions in sforms must adhere to PERL standards and, at this time, must make use of the alphabetic evl$event.key values in an eventlist object.

If dichot is set to FALSE then the components of the global sform that overlap will result in statistics that have been multiplied by a scalar equal to the number of overlaps. For example, in a situation where a global s-form is composed of the following terms: c("aab","aac"), any event “a” that occurs in an eventlist will have a corresponding value of 2 in the respective “a” column of the resulting statslist. In general, this is not the desired output and defaults to dichotomous statistics.

To generate S-form statistics that condition out the prefix set cond=TRUE. This will result in statistics of the form "(aa)b" or the likelihood of "b" given that "aa" occurred; thus, only the hazard of "b" is affected. This is useful when only the suffix event is of interest. When elements of each S-form are "paired," such as interval likelihood cases where each spell class can be characterized as having “starting” and “stopping” elements, setting interval=TRUE will result in two statistics per s-form: one that models the hazard of starting the suffix spell and one that models the duration of the suffix spell. In the general case, this is equivalent to a model with terms for "(ab)c" and "(ab)cd", respectively.

The interval parameter is a placeholder for future functionality. It currently passes the flag to gen.sformlist() and then fails to return what you think it should return.

A list containing idXevent, iXj matrices of sform sequence statistics.

A notice will be issued if special regex characters are found in any sform vector.

This routine will complain about poorly formed regular expressions.

The cond parameter affects all S-forms in sform.

S-form regular expressions that contain repitition or divergence ("+" or "|") flags are not allowed when cond=TRUE. See the example in help("gen.sformlist") for how to do this manually.

Christopher Steven Marcum

gen.sform,gen.sformlist,sfl2sl

example(gen.sformlist)
x<-list(c("aa","bb","cc"),c("ba","ca"))
tb1<-glb.sformlist(eventlist,sforms=x,new.names=c("inertia","afollows"))
rem(eventlist$eventlist,slbind(tb1,alpha.ints))