org.apache.spark.ml
Class UnaryTransformer<IN,OUT,T extends UnaryTransformer<IN,OUT,T>>
Object
org.apache.spark.ml.PipelineStage
org.apache.spark.ml.Transformer
org.apache.spark.ml.UnaryTransformer<IN,OUT,T>
- All Implemented Interfaces:
- java.io.Serializable, Logging, Params
- Direct Known Subclasses:
- ElementwiseProduct, Normalizer, PolynomialExpansion, RegexTokenizer, Tokenizer
public abstract class UnaryTransformer<IN,OUT,T extends UnaryTransformer<IN,OUT,T>>
- extends Transformer
- implements Logging
:: DeveloperApi ::
Abstract class for transformers that take one input column, apply transformation, and output the
result as a new column.
- See Also:
- Serialized Form
Methods inherited from class Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.apache.spark.Logging |
initializeIfNecessary, initializeLogging, isTraceEnabled, log_, log, logDebug, logDebug, logError, logError, logInfo, logInfo, logName, logTrace, logTrace, logWarning, logWarning |
Methods inherited from interface org.apache.spark.ml.param.Params |
clear, copyValues, defaultCopy, defaultParamMap, explainParam, explainParams, extractParamMap, extractParamMap, get, getDefault, getOrDefault, getParam, hasDefault, hasParam, isDefined, isSet, paramMap, params, set, set, set, setDefault, setDefault, setDefault, shouldOwn, validateParams |
UnaryTransformer
public UnaryTransformer()
setInputCol
public T setInputCol(String value)
setOutputCol
public T setOutputCol(String value)
transformSchema
public StructType transformSchema(StructType schema)
- Description copied from class:
PipelineStage
- :: DeveloperApi ::
Derives the output schema from the input schema.
- Specified by:
transformSchema
in class PipelineStage
- Parameters:
schema
- (undocumented)
- Returns:
- (undocumented)
transform
public DataFrame transform(DataFrame dataset)
- Description copied from class:
Transformer
- Transforms the input dataset.
- Specified by:
transform
in class Transformer
- Parameters:
dataset
- (undocumented)
- Returns:
- (undocumented)
copy
public T 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.
- Specified by:
copy
in interface Params
- Specified by:
copy
in class Transformer
- Parameters:
extra
- (undocumented)
- Returns:
- (undocumented)
- See Also:
defaultCopy()