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We will delve into PySpark’s StringIndexer, an essential feature that converts categorical string columns into numerical indices. This guide will provide a deep understanding of PySpark’s StringIndexer, complete with examples that highlight its relevance in machine learning tasks. What is ...
get("Iris.csv"), header=True, inferSchema=True) # Preprocessing: StringIndexer for categorical labels stringIndexer = StringIndexer(inputCol="Species", outputCol="label") # Preprocessing: VectorAssembler for feature columns assembler = VectorAssembler(inputCols=["SepalLengthCm", "SepalWidthCm", "...