AmazonReviewsDataLoader

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6. def apply(spark: SparkSession, dataDir: String, threshold: Double): LabeledData[Int, String]

   Loads the Amazon Product Reviews dataset for binary classification.

   Loads the Amazon Product Reviews dataset for binary classification. Each review is a JSON string with (at least) two fields: "reviewText" and "overAll".

   This data loader produces an RDD of labeled reviews.

   spark

   SparkSession to use (needed for SQL)

   dataDir

   Directory of the training data

   threshold

   Lowest value at which to consider a review positive.

   returns

   A Labeled Dataset that contains the data strings and labels.

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