StringListToIndicesNDArrayTransform

java.lang.Object
- org.datavec.api.transform.transform.BaseTransform
- - org.datavec.api.transform.transform.string.StringListToCountsNDArrayTransform
  - - org.datavec.api.transform.transform.string.StringListToIndicesNDArrayTransform

All Implemented Interfaces:

java.io.Serializable, ColumnOp, Transform
```
public class StringListToIndicesNDArrayTransform
extends StringListToCountsNDArrayTransform
```
Converts String column into a sparse bag-of-words (BOW) represented as an NDArray of indices. Appropriate for embeddings or as efficient storage before being expanded into a dense array.

See Also:

Serialized Form

Field Summary
- Fields inherited from class org.datavec.api.transform.transform.string.StringListToCountsNDArrayTransform
  binary, columnIdx, columnName, delimiter, ignoreUnknown, map, newColumnName, vocabulary
- Fields inherited from class org.datavec.api.transform.transform.BaseTransform
  inputSchema

Constructor Summary

Constructors
Constructor and Description
`StringListToIndicesNDArrayTransform(java.lang.String columnName, java.util.List<java.lang.String> vocabulary, java.lang.String delimiter, boolean binary, boolean ignoreUnknown)`
`StringListToIndicesNDArrayTransform(java.lang.String columnName, java.lang.String newColumnName, java.util.List<java.lang.String> vocabulary, java.lang.String delimiter, boolean binary, boolean ignoreUnknown)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method and Description

protected INDArray makeBOWNDArray(java.util.Collection<java.lang.Integer> indices)
- Methods inherited from class org.datavec.api.transform.transform.string.StringListToCountsNDArrayTransform
  columnName, columnNames, getIndices, map, map, mapSequence, outputColumnName, outputColumnNames, readVocabFromFile, setInputSchema, toString, transform
- Methods inherited from class org.datavec.api.transform.transform.BaseTransform
  getInputSchema, mapSequence
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`protected INDArray`	`makeBOWNDArray(java.util.Collection<java.lang.Integer> indices)`

Constructor Detail

StringListToIndicesNDArrayTransform

public StringListToIndicesNDArrayTransform(java.lang.String columnName,
                                           java.util.List<java.lang.String> vocabulary,
                                           java.lang.String delimiter,
                                           boolean binary,
                                           boolean ignoreUnknown)

Parameters:: columnName - The name of the column to convert; vocabulary - The possible tokens that may be present.; delimiter - The delimiter for the Strings to convert; ignoreUnknown - Whether to ignore unknown tokens

StringListToIndicesNDArrayTransform

public StringListToIndicesNDArrayTransform(java.lang.String columnName,
                                           java.lang.String newColumnName,
                                           java.util.List<java.lang.String> vocabulary,
                                           java.lang.String delimiter,
                                           boolean binary,
                                           boolean ignoreUnknown)

Method Detail
- makeBOWNDArray
```
protected INDArray makeBOWNDArray(java.util.Collection<java.lang.Integer> indices)
```
  Overrides:
  
  makeBOWNDArray in class StringListToCountsNDArrayTransform

Class StringListToIndicesNDArrayTransform

Field Summary

Fields inherited from class org.datavec.api.transform.transform.string.StringListToCountsNDArrayTransform

Fields inherited from class org.datavec.api.transform.transform.BaseTransform

Constructor Summary

Method Summary

Methods inherited from class org.datavec.api.transform.transform.string.StringListToCountsNDArrayTransform

Methods inherited from class org.datavec.api.transform.transform.BaseTransform

Methods inherited from class java.lang.Object

Constructor Detail

StringListToIndicesNDArrayTransform

StringListToIndicesNDArrayTransform

Method Detail

makeBOWNDArray