Câu 4: Databricks Certified Machine Learning Associate

Which of the following statements describes a Spark ML estimator?

1. A. An estimator is a hyperparameter grid that can be used to train a model
2. B. An estimator chains multiple algorithms together to specify an ML workflow
3. C. An estimator is a trained ML model which turns a DataFrame with features into a DataFrame with predictions
4. D. An estimator is an algorithm which can be fit on a DataFrame to produce a Transformer — đáp án hiện tại
5. E. An estimator is an evaluation tool to assess to the quality of a model