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Questions tagged [party]

Questions related to the R packages party and partykit for recursive partitioning

The R packages party and its successor partykit provide a toolbox for recursive partitioning for a variety of regression models. See the manual and vignettes for more details.

240 questions
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Is it possible to build a random forest with model based trees i.e., `mob()` in partykit package

I'm trying to build a random forest using model based regression trees in partykit package. I have built a model based tree using mob() function with a user defined fit() function which returns an object at the terminal node. In partykit there is…
Kiran KG
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terminal panel partykit r node id plots object info

I'm trying to remove the labels of the Node id's at the terminal panel of a partykit object (those that say Node x...), following the instructions with terminal_panel, I can change the inner_panel without trouble, but the plot includes information…
Elio Diaz
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R partykit: How do I use the offset?

I am trying to predict the frequency of an outcome and I have a lot of data. I have already fitted a glm to the data and now I am trying to use ctree to understand any complex interaction in the dataset that I may have missed. Instead of directly…
CHF18
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partykit: Change terminal node boxplots to bar graphs that shows mean and standard deviation

I have created a regression tree in R. Here's the code: tree <- rpart(y~., method="anova", minsplit=20, minbucket=20, maxdepth=3, data=foo) plot(as.party(tree), terminal_panel = node_boxplot) Instead of a boxplot, which shows the median and IQR,…
aleia
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ctree function in party package - how to get the list of the splitting variable in a simple way

I am trying to get the list of the splitting variable of a tree when using ctree. I found a way to get a specific splitting variable of a specific node using psplit. But I would like to get the whole list of the splitting variables in the entire…
user573347
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Issue with caseweights and OOB prediction using cforest from the party package

I am fitting a cforest with the optional argument caseweights, which is a double matrix with ncol(caseweights)== number of trees in my random forest and nrow(caseweights)= number of observations. Furthermore I am normalizing them so that the colSums…
franzfranz
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Conditional partitioning

I would like to partition a variable V2 using a variable V1. And V1 depends on a third variable V3. In the following R code the variable V1 depends on a variable V3 such as when V3 equals 10 and V2 is 1, V1 equals 1. Is there an algorithm which is…
MassCorr
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R - partykit - custom model tree nodes and splits

In package partykit there is a way to build custom trees by specifying predictor and split. For example: data("WeatherPlay", package = "partykit") #create a split sp_o <- partysplit(3L, breaks = 75) #create a node n1 <- partynode(id = 1L, split =…
Jan Tabacek
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How to fix "invalid type (NULL) for variable" error in ctree function using the party package in R?

I am using the ctree() in the party package from R. I want to be able to columns from more than one dataframe, for which I would call use column separately (using $) as I have in the past with this function but this time it is not working. For the…
user3386170
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Rotate x-axis of r partykit tree plot

I've built a decision tree using ctree in R and visualize the tree using the ctree model in the party package. I am very happy with the results and the overall visualization. However, I cannot interpret the 'confusion' in every leaf node, since the…
Arend
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How to get the surrogate splits in a ctree model, party package in R

I am trying to use ctree from party to get a conditional classification tree. The tree worked well, but I just can't find any infomation about how to see the results of the surrogete splits from this tree. The script for the model…
phil
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cforest: error in predict when newdata is one-row dataframe

Hello I am using the package partykit and its function cforest to fit a model. I can also use predict to predict based on a multi-row dataframe. However, I cannot predict on a dataframe with one row. require('partykit') y <-…
Bozothegrey
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Can't get partykit package's mob function to do univariate MLE fit

I can't get the partykit package's mob function to do univariate MLE fit. # Trying to convert vignette example here https://cran.r-project.org/web/packages/partykit/vignettes/mob.pdf on page 7 to do univariate MLE gamma fits. …
rwinkel2000
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Traversing a Binary Tree to Get The Splitting Conditions - ctree(party), recursive function

I am trying to reproduce the error which I get with my dataset using a general dataset. Please correct me if I am missing something. After fitting a Classification tree using library(party), I am trying to get the split conditions of the tree on…
user3560220
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Depth of a node in partykit

I am building a tree using the partykit R package, and I am wondering if there is a simple, efficient way to determine the depth number at each internal node. For example, the root node would have depth 0, the first two kid nodes have depth 1, the…
Peter Calhoun
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