SPparameter-class

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Class "SPparameter" --- cSPADE Mining Parameters

Provides the constraint parameters for the cSPADE algorithm for mining frequent sequences.

Keywords
classes
Note

User-supplied values are silently coerced to the target class, e.g. integer.

Parameters with no (default) value are not supplied to the mining algorithm, i.e., take the default values implemented there. A value can be unset using NULL.

Objects from the Class

A suitable default parameter object will be automatically created by a call to cspade. However, the values can be replaced by specifying a named list with the names (partially) matching the slot names of the class.

Objects can be created by calls of the form new("SPparameter", support, ...).

Slots

support:
a numeric value specifying the minimum support of a sequence (default 0.1, range [0,1]).
maxsize:
an integer value specifying the maximum number of items of an element of a sequence (default 10, range > 0).
maxlen:
an integer value specifying the maximum number of elements of a sequence (default 10, range > 0).
mingap:
an integer value specifying the minimum time difference between consecutive elements of a sequence (default none, range >= 1).
maxgap:
an integer value specifying the maximum time difference between consecutive elements of a sequence (default none, range >= 0).
maxwin:
an integer value specifying the maximum time difference between any two elements of a sequence (default none, range >= 0).

Methods

coerce
signature(from = "NULL", to = "SPparameter")
coerce
signature(from = "list", to = "SPparameter")
coerce
signature(from = "SPparameter", to = "character")
coerce
signature(from = "SPparameter", to = "data.frame")
coerce
signature(from = "SPparameter", to = "list")
coerce
signature(from = "SPparameter", to = "vector")
format
signature(x = "SPparameter")

See Also

Class , function cspade.

Aliases
  • SPparameter-class
  • coerce,NULL,SPparameter-method
  • coerce,list,SPparameter-method
  • coerce,SPparameter,character-method
  • coerce,SPparameter,data.frame-method
  • coerce,SPparameter,list-method
  • coerce,SPparameter,vector-method
  • format,SPparameter-method
  • initialize,SPparameter-method
  • show,SPparameter-method
Examples
## coerce from list 
p <- as(list(maxsize = NULL, maxwin = 5), "SPparameter")
p

## coerce to
as(p, "vector")
as(p, "data.frame")
Documentation reproduced from package arulesSequences, version 0.2-19, License: GPL-2

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