Questions tagged [catboost]

The tag has no usage guidance.

7 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
5
votes
0answers
148 views

How to achieve SHAP values for a CatBoost model in R?

I'm asked to create a SHAP analysis in R but I cannot find it how to obtain it for a CatBoost model. I can get the SHAP values of an XGBoost model with ...
3
votes
0answers
35 views

What is the concept behind the categorical-encoding used in the CatBoost benchmark problems?

I'm working through CatBoost quality benchmark problems (here). I'm particularly intrigued by the methodology adopted to convert categorical features to numerical values as described in the ...
0
votes
0answers
7 views

Model Dump Parser (like XGBFI) for LightGBM and CatBoost

Currently my employer has multiple GLM in a live environment. I am interested in identifying new features and interactions to enhance the accuracy of these GLM; for now I am limited to the GLM ...
0
votes
0answers
15 views

Why does Catboost outperform other boosting algorithms?

I have noticed while working with multiple datasets that catboost with its default parameters tends to outperform lightgbm or xgboost with its default parameters even on a tabular dataset with no ...
0
votes
0answers
63 views

When to consider examples as duplicates in a classification problem?

I'm trying to train a model for a binary classification problem and I'm trying to understand if my model is biased from my data or if my results are valid. I have a pandas dataframe as output of my ...
0
votes
0answers
30 views

Feature Selection before modeling with Boosting Trees

I have read in some papers that the subset of features chosen for a boosting tree algorithm will make a big difference on the performanceso I've been trying RFE, Boruta, Clustering variables, ...
0
votes
0answers
52 views

How to understand the definition of Greedy Target-based Statistics in the CatBoost paper

There is a method named Target statistics to deal with categorical features in the catboost paper. I still some confusion about the mathematical form. Could you some guys to expain how to compute it! $...