Package org.tribuo.data.columnar.extractors

Provides implementations of FieldExtractor.

See: Description

Class Summary

Class	Description
DateExtractor	Extracts the field value and translates it to a LocalDate based on the specified DateTimeFormatter.
DoubleExtractor	Extracts the field value and converts it to a double.
FloatExtractor	Extracts the field value and converts it to a float.
IdentityExtractor	Extracts the field value and emits it as a String.
IndexExtractor	An Extractor with special casing for loading the index from a Row.
IntExtractor	Extracts the field value and converts it to a int.
SimpleFieldExtractor<T>	Extracts a value from a single field to be placed in an Example's metadata field.

Package org.tribuo.data.columnar.extractors Description

Provides implementations of FieldExtractor.

The FieldExtractor.getMetadataName() values of "name" Example.NAME and "weight" (case-sensitive) are special. In particular, "name" is used throughout the Example environment to uniquely identify Examples within a Dataset. "weight" should only be used for the FieldExtractor supplied to RowProcessor as the weightExtractor which is used by the system to weight Examples.