Databricks Certified Machine Learning - Associate
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In what scenario would you employ a StringIndexer within a machine-learning pipeline?
A
To manage missing values in your dataset.
B
For transforming numerical data into categorical variables.
C
When you need to recognize a column as a categorical variable or transform textual data into numerical data without losing the categorical meaning.
D
StringIndexer is solely for text processing and has no place in machine learning contexts.