Informative output of apriori cannot be disabled with suppressMessages

[kliegr]

Arules outputs many diagnostic messages such as Parameter specification and Algorithmic control.

These messages cannot be suppressed with the suppressMessages() function. The gist of the problem might be described in this stackoverflow entry.

As a side note, the warning "You chose a very low absolute support count of 0. You might run out of memory! Increase minimum support." can be supressed with suppressWarnings().

Working suppressMessages() would be nice when apriori is invoked programmatically, from other packages.

[mhahsler]

Progress reporting can be suppressed using verbose=FALSE as a control argument.

rules <- apriori(Adult, parameter = list(supp = 0.5, conf = 0.9, target = "rules"), control=list(verbose = FALSE))

[kliegr]

Thanks, I overlooked this flag.

[lovetoken]

I have additional questions. How to silent the output when arules::inspect() inspect() is not control argument control=list(verbose = FALSE).

The result doesn't silent message even though execute the assignment like this code

> data("Adult")
> rules <- apriori(Adult, control = list(verbose = F))
> res <- inspect(rules[1:10])
     lhs                          rhs                              support confidence      lift
[1]  {}                        => {race=White}                   0.8550428  0.8550428 1.0000000
[2]  {}                        => {native-country=United-States} 0.8974243  0.8974243 1.0000000
[3]  {}                        => {capital-gain=None}            0.9173867  0.9173867 1.0000000
[4]  {}                        => {capital-loss=None}            0.9532779  0.9532779 1.0000000
[5]  {relationship=Unmarried}  => {capital-loss=None}            0.1019819  0.9719024 1.0195373
[6]  {occupation=Sales}        => {race=White}                   0.1005282  0.8920785 1.0433144
[7]  {occupation=Sales}        => {native-country=United-States} 0.1039679  0.9226017 1.0280552
[8]  {occupation=Sales}        => {capital-gain=None}            0.1030670  0.9146076 0.9969706
[9]  {occupation=Sales}        => {capital-loss=None}            0.1068343  0.9480378 0.9945030
[10] {occupation=Adm-clerical} => {native-country=United-States} 0.1052373  0.9160577 1.0207632

[mhahsler]

I am confused about the purpose of silencing inspect. The whole point if inspect is to show results on the screen (like print). You probably want to do something like this:

 res <- as(rules, "data.frame") 

[lovetoken]

Oh. I got it Thanks advice :)