Merge pull request #4 from mini-pw/main

lab 4

Materialy/Lab4/LIME.R

@@ -0,0 +1,64 @@
+### Model ###
+
+data(titanic_imputed, package = "DALEX")
+
+model <- ranger::ranger(survived~., data = titanic_imputed, classification = TRUE, probability = TRUE)
+
+
+###DALEXtra###
+
+library(DALEX)
+library(DALEXtra)
+
+explainer <- explain(model = model,
+                     data = titanic_imputed[,-8],
+                     y = titanic_imputed$survived)
+
+
+library(mlr)
+titanic_imputed_fct <- titanic_imputed
+titanic_imputed_fct$survived <- as.factor(titanic_imputed_fct$survived)
+
+classif_task <- makeClassifTask(data = titanic_imputed_fct, target = "survived")
+classif_lrn <- makeLearner("classif.svm", predict.type = "prob")
+model_mlr <- train(classif_lrn, classif_task)
+
+explainer_mlr <- explain(model = model_mlr,
+                         data = titanic_imputed_fct[,-8],
+                         y = as.numeric(as.character(titanic_imputed_fct$survived)))
+
+### LIME ###
+
+library("lime")
+model_type.dalex_explainer <- DALEXtra::model_type.dalex_explainer
+predict_model.dalex_explainer <- DALEXtra::predict_model.dalex_explainer
+
+lime_johnny_mlr <- predict_surrogate(explainer = explainer_mlr, 
+                                 new_observation = titanic_imputed_fct[11, -8], 
+                                 n_features = 3, 
+                                 n_permutations = 1000,
+                                 type = "lime")
+
+lime_johnny_ranger <- predict_surrogate(explainer = explainer, 
+                                     new_observation = titanic_imputed_fct[11, -8], 
+                                     n_features = 3, 
+                                     n_permutations = 1000,
+                                     type = "lime")
+
+plot(lime_johnny)
+plot(lime_johnny_ranger)
+
+### Break Down ###
+
+pp_ranger_bd_1 <- predict_parts(explainer, new_observation = titanic_imputed[11,])
+plot(pp_ranger_bd_1)
+
+pp_ranger_bd_2 <- predict_parts(explainer_mlr, new_observation = titanic_imputed[11,])
+plot(pp_ranger_bd_2)
+
+
+
+# Zadanko
+
+# Wez dowolny zbior, stworz dowolny model. Wygeneruj oraz porównaj wyjasnienie LIME oraz BreakDown
+