Issues

• TLFAllocFreeList UB: Undefined Behavior due to object lifetime issues

  catboost/catboost#2942 · Filter by author nacht-wache opened on Sep 19, 2025
  2

• Feature combination string input for hash function

  catboost/catboost#2941 · Filter by author kpatucha opened on Sep 19, 2025

• SelectFeatures visualization fails with "titlefont"

  visualization
  catboost/catboost#2940 · Filter by author pavelgur opened on Sep 18, 2025
  1

• CatBoost R Windows 11 GPU training invoked via RScript.exe exits with Windows error 0xc0000409.

  RWindows
  Bug

  catboost/catboost#2939 · Filter by author tmorley-stockiq opened on Sep 17, 2025
  6

• Monotone constraints do not work with 'MultiQuantile:alpha=0.05, 0.5, 0.95' loss

  catboost/catboost#2938 · Filter by author CsanyiDavid opened on Sep 16, 2025

• Allow to use custom C++ objectives from python API classes CatBoostRegressor, CatBoostClassifier and CatBoostRanker

  objectives and metricspython
  Task

  catboost/catboost#2936 · Filter by author andrey-khropov opened on Sep 11, 2025
  6

  

• Any plan for LambdaMart to support GPU?

  GPUobjectives and metrics
  Feature

  catboost/catboost#2934 · Filter by author GreyRaphael opened on Sep 11, 2025
  1

• Performance sensitivity to row / column order

  Need Researchquality
  catboost/catboost#2933 · Filter by author valeman opened on Sep 9, 2025
  

• Cannot use the executable "/home/raphy/catboost/build/bin/swig" (missing: java) (found version "")

  buildLinux
  catboost/catboost#2930 · Filter by author raphael10-collab opened on Aug 29, 2025
  1

• catboost/cuda/cuda_lib/cuda_base.h:243: CUDA error 700: an illegal memory access was encountered

  GPU
  Bug

  catboost/catboost#2928 · Filter by author jakubhaumer opened on Aug 25, 2025
  2

• model2.predict(X_test) throws IndexError if custom_loss is used

  python
  Bug

  catboost/catboost#2932 · Filter by author andrey-khropov opened on Aug 24, 2025
  

• [BUG] set_probability_threshold() does not affect actual prediction threshold — only updates metadata

  python
  catboost/catboost#2925 · Filter by author celestinoxp opened on Aug 12, 2025

• C bindings and multithreading.

  C/C++ applier
  catboost/catboost#2922 · Filter by author aryehlev opened on Aug 10, 2025
  3

• Shrink model to first 1 iterations

  catboost/catboost#2916 · Filter by author pengcao opened on Aug 5, 2025
  1

• ONNX export for Catboost regression models produces incompatible output dimensions for MQL5

  catboost/catboost#2915 · Filter by author ajmtrz opened on Aug 4, 2025

• Features request : Allow multidimensional sample weighting when using multi target model.

  objectives and metrics
  Feature

  catboost/catboost#2906 · Filter by author kaskales opened on Jul 24, 2025

• [BUG] CatBoost Pool serialization fails with many highly sparse columns (mostly zeros)

  Bug

  catboost/catboost#2904 · Filter by author datamtrxtw opened on Jul 22, 2025

• Refine, then calibrate

  Feature

  catboost/catboost#2903 · Filter by author karllandheer opened on Jul 20, 2025

• Segmentation Fault when setting bootstrap_type MVS training with GPU

  GPUneed info
  catboost/catboost#2902 · Filter by author Jessee-Jiao opened on Jul 16, 2025
  6

• Condition violated: `dataSet.IsOneHot(split.FeatureId)'

  GPU
  Bug

  catboost/catboost#2901 · Filter by author PyAlexOs opened on Jul 14, 2025
  2

• Compatibility with Cython 3.1.x

  buildpython
  Task

  catboost/catboost#2899 · Filter by author andrey-khropov opened on Jul 7, 2025

• Focal loss: Support Gpu learning

  GPUobjectives and metrics
  Feature

  catboost/catboost#2896 · Filter by author PhenomenaPh opened on Jun 30, 2025

• Catboost crashes when training on quantized categorical pool containing feature with 2 categories

  in progresspython
  Bug

  catboost/catboost#2895 · Filter by author FedorTarasow opened on Jun 26, 2025
  

• Error when using embedding_features with GPU training

  GPU
  Bug

  catboost/catboost#2894 · Filter by author arun-nemani opened on Jun 22, 2025

• Support building and linking static library from Rust project

  buildRust
  Feature

  catboost/catboost#2892 · Filter by author joelchen opened on Jun 16, 2025
  3