Explanation:
The StringIndexer is crucial for converting textual data into numerical format, ensuring the categorical context is preserved. This conversion is essential for machine learning algorithms that operate on numerical inputs.
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Why is the StringIndexer used in machine learning?
A
To enhance string variables by appending numerical data
B
To transform textual data into numerical format without losing categorical meaning
C
Neither of the options is correct
D
Both options A and B are correct