that is, read ?str carefully.
data structures are fundamental to any programming language, so if you
really aren't getting it, that's a signal that you need to spend some time
with R tutorials. The R language Definition manual is a more comprehensive
but of course more difficult resource to learn about such matters. I find
it readable, however. Others may not.
Bert Gunter
"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
On Tue, Mar 17, 2020 at 12:22 PM Bert Gunter <bgunter.4...@gmail.com> wrote:
> ?str
>
> Bert Gunter
>
> "The trouble with having an open mind is that people keep coming along and
> sticking things into it."
> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
>
>
> On Tue, Mar 17, 2020 at 12:19 PM Sparks, John <jspa...@uic.edu> wrote:
>
>> Hi R-Helpers,
>>
>> I have recently started working with the iml package (Interpretable
>> Machine Learning) and its associated material, which I generally find very
>> helpful.
>>
>> I want to recover some values out of the FeatureEffect Object created by
>> this library, but the form of the object is completely foreign to me.
>>
>> As a reproducible example:
>>
>>
>> set.seed(42)
>> library("iml")
>> library("randomForest")
>> data("Boston", package = "MASS")
>> rf = randomForest(medv ~ ., data = Boston, ntree = 50)
>>
>> X = Boston[which(names(Boston) != "medv")]
>> predictor = Predictor$new(rf, data = X, y = Boston$medv)
>> imp = FeatureImp$new(predictor, loss = "mae")
>> eff = FeatureEffect$new(predictor, feature = "rm")
>> eff
>>
>>
>> Interpretation method: FeatureEffect
>> features: rm[numerical]
>> grid size: 20
>>
>> Analysed predictor:
>> Prediction task: unknown
>>
>>
>> Analysed data:
>> Sampling from data.frame with 506 rows and 13 columns.
>>
>> Head of results:
>> .ale .type rm
>> 1 -2.150574 ale 3.561
>> 2 -2.610528 ale 5.304
>> 3 -2.338677 ale 5.593
>> 4 -2.265673 ale 5.709
>> 5 -2.142912 ale 5.837
>> 6 -2.085899 ale 5.885
>>
>> How can I refer to and get ahold of the table of 6 records above?
>>
>> I tried str(eff) and class(eff), but I am not familiar with the structure
>> of the object(s).
>>
>> Would someone please tell me how to get inside the eff object, or point
>> me to a reference as to what the class or structure of the object is?
>>
>> Thanks.
>> --John Sparks
>>
>> [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
[[alternative HTML version deleted]]
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