Package org.apache.spark.ml.feature

Class CountVectorizerModel

Object
org.apache.spark.ml.PipelineStage
org.apache.spark.ml.Transformer
org.apache.spark.ml.Model<CountVectorizerModel>
org.apache.spark.ml.feature.CountVectorizerModel
All Implemented Interfaces:
Serializable, org.apache.spark.internal.Logging, org.apache.spark.ml.feature.CountVectorizerParams, Params, HasInputCol, HasOutputCol, Identifiable, MLWritable
public class CountVectorizerModel extends Model<CountVectorizerModel> implements org.apache.spark.ml.feature.CountVectorizerParams, MLWritable
Converts a text document to a sparse vector of token counts. param: vocabulary An Array over terms. Only the terms in the vocabulary will be counted.
See Also:

  • Constructor Details

    • CountVectorizerModel

      public CountVectorizerModel(String uid, String[] vocabulary)

    • CountVectorizerModel

      public CountVectorizerModel(String[] vocabulary)

  • Method Details

    • read

      public static MLReader<CountVectorizerModel> read()

    • load

      public static CountVectorizerModel load(String path)

    • vocabSize

      public IntParam vocabSize()
      Specified by:
      vocabSize in interface org.apache.spark.ml.feature.CountVectorizerParams

    • minDF

      public DoubleParam minDF()
      Specified by:
      minDF in interface org.apache.spark.ml.feature.CountVectorizerParams

    • maxDF

      public DoubleParam maxDF()
      Specified by:
      maxDF in interface org.apache.spark.ml.feature.CountVectorizerParams

    • minTF

      public DoubleParam minTF()
      Specified by:
      minTF in interface org.apache.spark.ml.feature.CountVectorizerParams

    • binary

      public BooleanParam binary()
      Specified by:
      binary in interface org.apache.spark.ml.feature.CountVectorizerParams

    • outputCol

      public final Param<String> outputCol()
      Description copied from interface: HasOutputCol
      Param for output column name.
      Specified by:
      outputCol in interface HasOutputCol
      Returns:
      (undocumented)

    • inputCol

      public final Param<String> inputCol()
      Description copied from interface: HasInputCol
      Param for input column name.
      Specified by:
      inputCol in interface HasInputCol
      Returns:
      (undocumented)

    • uid

      public String uid()
      Description copied from interface: Identifiable
      An immutable unique ID for the object and its derivatives.
      Specified by:
      uid in interface Identifiable
      Returns:
      (undocumented)

    • vocabulary

      public String[] vocabulary()

    • setInputCol

      public CountVectorizerModel setInputCol(String value)

    • setOutputCol

      public CountVectorizerModel setOutputCol(String value)

    • setMinTF

      public CountVectorizerModel setMinTF(double value)

    • setBinary

      public CountVectorizerModel setBinary(boolean value)

    • transform

      public Dataset<Row> transform(Dataset<?> dataset)
      Description copied from class: Transformer
      Transforms the input dataset.
      Specified by:
      transform in class Transformer
      Parameters:
      dataset - (undocumented)
      Returns:
      (undocumented)

    • transformSchema

      public StructType transformSchema(StructType schema)
      Description copied from class: PipelineStage
      Check transform validity and derive the output schema from the input schema.

      We check validity for interactions between parameters during transformSchema and raise an exception if any parameter value is invalid. Parameter value checks which do not depend on other parameters are handled by Param.validate().

      Typical implementation should first conduct verification on schema change and parameter validity, including complex parameter interaction checks.

      Specified by:
      transformSchema in class PipelineStage
      Parameters:
      schema - (undocumented)
      Returns:
      (undocumented)

    • copy

      public CountVectorizerModel copy(ParamMap extra)
      Description copied from interface: Params
      Creates a copy of this instance with the same UID and some extra params. Subclasses should implement this method and set the return type properly. See defaultCopy().
      Specified by:
      copy in interface Params
      Specified by:
      copy in class Model<CountVectorizerModel>
      Parameters:
      extra - (undocumented)
      Returns:
      (undocumented)

    • write

      public MLWriter write()
      Description copied from interface: MLWritable
      Returns an MLWriter instance for this ML instance.
      Specified by:
      write in interface MLWritable
      Returns:
      (undocumented)

    • toString

      public String toString()
      Specified by:
      toString in interface Identifiable
      Overrides:
      toString in class Object