Machine Learning / AI

Why is sigmoid used for binary classification instead of softmax?

What are repair strategies in dialogue?

What fairness issues arise in recommendations?

Middle — Senior

HybridVK Cloud

What problems arise in multilingual RAG?

Is it possible to use cross-entropy for two classes and why is it not recommended?

How does CatBoost differ from XGBoost when working with categorical features?

What is federated learning and what are its limitations?

How to expand the target audience?

How does banner placement work?

What properties do mutually exclusive classes have in multi-class classification?

What is the difference between dropout and batch normalization?

Как определить политику выкупа в аукционе?

What other methods besides dropout exist to combat overfitting?

What to do with browser characteristic change distributions?

How to test an identification system on new data?

What is message passing in GNN?

What is position bias in click data?

How to classify issuing a new or old identifier?

What is point-in-time correctness?

Middle — Senior

HybridБилайнМТС

What happens to the tree when there is a very large or very small minimum number of objects in a leaf?