Interview Q&A / Machine Learning
Machine Learning interview questions
Supervised vs unsupervised learning, overfitting, metrics and the classic models, explained simply.
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- What is bootstrap sampling and the out-of-bag score in a random forest?
Each tree trains on a bootstrap sample: n rows drawn with replacement, containing about 63% of the unique rows. The remaining roughly 37% are out-of-bag for that tree and give a free validation estimate.
IntermediateQuick answer1 min read