Feature Extraction and Transformation - RDD-based API TF-IDF Word2Vec Model Example StandardScaler Model Fitting Example Normalizer Example ChiSqSelector Model Fitting Example ElementwiseProduct Example PCA TF-IDF Note We recommend using the DataFrame-based API, which is detailed in the ML user guide on TF-IDF. Term frequency-inverse document frequency (TF-IDF) is a feature vectorization method wi