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ml-recall

#scikit-learn

12 questions from Data & Features, Logistic Regression & Softmax, Nearest Neighbors & Kernel Methods, Support Vector Machines, Decision Trees & Ensembles, Dimensionality Reduction, NLP Fundamentals

Timed test

12 questions · 12 min · score and explanations at the end

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Question 1: Single choice

easyAI-checkedData & Features

You fit scikit-learn's OrdinalEncoder on the categorical columns of the training data and then call transform on the validation data, which raises an error. What is the most likely cause?

Choose one option