In Spark ML, the difference between Estimator and Transformer is:

Question

Accepted Answer

Estimators fit to produce models/transformers; transformers implement transform without learning parameters (generally) — Estimator.fit → model; Transformer.transform → data. That's the Spark ML grammar.

Answer

None; synonyms

Answer

Transformers train; estimators only map

Answer

Estimators only run on GPUs

In Spark ML, the difference between Estimator and Transformer is:

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