xgboost.unify: Unify XGBoost model

In ModelOriented/treeshap: Compute SHAP Values for Your Tree-Based Models Using the 'TreeSHAP' Algorithm

Unify XGBoost model

Description

Convert your XGBoost model into a standardized representation. The returned representation is easy to be interpreted by the user and ready to be used as an argument in treeshap() function.

Usage

xgboost.unify(xgb_model, data, recalculate = FALSE)

Arguments

xgb_model	A XGBoost model - object of class xgb.Booster
data	Reference dataset. A data.frame or matrix with the same columns as in the training set of the model. Usually dataset used to train model.
recalculate	logical indicating if covers should be recalculated according to the dataset given in data. Keep it FALSE if training data are used.

Value

a unified model representation - a model_unified.object object

See Also

lightgbm.unify for LightGBM models

gbm.unify for GBM models

ranger.unify for ranger models

randomForest.unify for randomForest models

Examples

library(xgboost)
data <- fifa20$data[colnames(fifa20$data) != 'work_rate']
target <- fifa20$target
param <- list(objective = "reg:squarederror", max_depth = 3)
xgb_model <- xgboost::xgboost(as.matrix(data), params = param, label = target,
                              nrounds = 20, verbose = 0)
unified_model <- xgboost.unify(xgb_model, as.matrix(data))
shaps <- treeshap(unified_model, data[1:2,])
plot_contribution(shaps, obs = 1)

ModelOriented/treeshap documentation built on Jan. 27, 2024, 10:57 p.m.