Displaying 5 results from an estimated 5 matches for "itemmatrix".
2011 Jan 28
1
arules package question- apriori/S4 object export question
.... I have read lots about write.csv
functions and exporting data frames and other standard objects. Im having
difficulty working with these S4 objects. My object looks as follows.
> str(rules)
Formal class 'rules' [package "arules"] with 4 slots
..@ lhs :Formal class 'itemMatrix' [package "arules"] with 3 slots
.. .. ..@ data :Formal class 'ngCMatrix' [package "Matrix"] with 5
slots
.. .. .. .. ..@ i : int [1:2133] 3907 3519 4172 3519 4182 3519 4172
4182 4172 4182 ...
.. .. .. .. ..@ p : int [1:790] 0 0 1 2 3 4 5 6 7...
2006 Jul 28
1
arules package: using image() deliveres unexpected results
Dear Collegues,
it seems like there is a problem with the image()-method in the package arules.
Using an ordninary matrix works fine:
image(matrix(rnorm(200), 10, 20), axes = FALSE, col=brewer.pal(9, "Blues") )
delivers an image with blue colors and no axes.
Using an object of the class "associations" (arules package) does not work:
image(items(ta.eclat), axes = FALSE,
2011 Oct 10
1
pmml for random forest & rules
...parameter = list(supp = 0.5, conf = 0.9,
target = "rules"))
pmml(rules)
I get this error:
> pmml(rules)
Error in function (classes, fdef, mtable) :
unable to find an inherited method for function "size", for
signature "itemMatrix"
With this traceback:
> traceback()
5: stop("unable to find an inherited method for function \"", fdef at generic,
"\", for signature ", cnames)
4: function (classes, fdef, mtable)
{
methods <- .findInheritedMethods(classes, fdef, mtable)...
2006 Feb 08
1
ARULES --> Filtering Rules by RHS
Dear Colleagues,
I would like to only inspect rules that contain a certain label substring on the rhs. In this special case the item labels are built like this:
<itemtype>_<itemvalue> e.g. "Artikelgruppe_E0815" what I want to do is only show rules where "Artikelgruppe" is contained in the rhs - has anybody an idea how this could work?
Sincerely
2013 Mar 11
2
Función Inspect() en "arules" package
Buenas tardes,
Necesito ayuda con la función inspect() del paquete "arules".
Mis comandos son:
r1 <- apriori(tran, parameter=list(support=0.012, confidence=0.7))
r1
summary(r1)
#todo bien, tengo 5 reglas y todo claro en el resume
#pero al pedir
inspect(r1)
inspect(sort(r1, by = "confidence"))
me arroja el error:
Error en UseMethod("inspect", x) :
no