public class MinMaxScaler extends Estimator<MinMaxScalerModel>
Rescaled(e_i) = \frac{e_i - E_{min}}{E_{max} - E_{min}} * (max - min) + min
For the case E_{max} == E_{min}, Rescaled(e_i) = 0.5 * (max + min) Note that since zero values will probably be transformed to non-zero values, output of the transformer will be DenseVector even for sparse input.
Constructor and Description |
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MinMaxScaler() |
MinMaxScaler(java.lang.String uid) |
Modifier and Type | Method and Description |
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protected static <T> T |
$(Param<T> param) |
static Params |
clear(Param<?> param) |
MinMaxScaler |
copy(ParamMap extra)
Creates a copy of this instance with the same UID and some extra params.
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protected static <T extends Params> |
copyValues(T to,
ParamMap extra) |
protected static <T extends Params> |
copyValues$default$2() |
protected static <T extends Params> |
defaultCopy(ParamMap extra) |
static java.lang.String |
explainParam(Param<?> param) |
static java.lang.String |
explainParams() |
static ParamMap |
extractParamMap() |
static ParamMap |
extractParamMap(ParamMap extra) |
MinMaxScalerModel |
fit(Dataset<?> dataset)
Fits a model to the input data.
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static <T> scala.Option<T> |
get(Param<T> param) |
static <T> scala.Option<T> |
getDefault(Param<T> param) |
static java.lang.String |
getInputCol() |
static double |
getMax() |
double |
getMax() |
static double |
getMin() |
double |
getMin() |
static <T> T |
getOrDefault(Param<T> param) |
static java.lang.String |
getOutputCol() |
static Param<java.lang.Object> |
getParam(java.lang.String paramName) |
static <T> boolean |
hasDefault(Param<T> param) |
static boolean |
hasParam(java.lang.String paramName) |
protected static void |
initializeLogIfNecessary(boolean isInterpreter) |
static Param<java.lang.String> |
inputCol() |
static boolean |
isDefined(Param<?> param) |
static boolean |
isSet(Param<?> param) |
protected static boolean |
isTraceEnabled() |
static MinMaxScaler |
load(java.lang.String path) |
protected static org.slf4j.Logger |
log() |
protected static void |
logDebug(scala.Function0<java.lang.String> msg) |
protected static void |
logDebug(scala.Function0<java.lang.String> msg,
java.lang.Throwable throwable) |
protected static void |
logError(scala.Function0<java.lang.String> msg) |
protected static void |
logError(scala.Function0<java.lang.String> msg,
java.lang.Throwable throwable) |
protected static void |
logInfo(scala.Function0<java.lang.String> msg) |
protected static void |
logInfo(scala.Function0<java.lang.String> msg,
java.lang.Throwable throwable) |
protected static java.lang.String |
logName() |
protected static void |
logTrace(scala.Function0<java.lang.String> msg) |
protected static void |
logTrace(scala.Function0<java.lang.String> msg,
java.lang.Throwable throwable) |
protected static void |
logWarning(scala.Function0<java.lang.String> msg) |
protected static void |
logWarning(scala.Function0<java.lang.String> msg,
java.lang.Throwable throwable) |
static DoubleParam |
max() |
DoubleParam |
max()
upper bound after transformation, shared by all features
Default: 1.0
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static DoubleParam |
min() |
DoubleParam |
min()
lower bound after transformation, shared by all features
Default: 0.0
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static Param<java.lang.String> |
outputCol() |
static Param<?>[] |
params() |
static void |
save(java.lang.String path) |
static <T> Params |
set(Param<T> param,
T value) |
protected static Params |
set(ParamPair<?> paramPair) |
protected static Params |
set(java.lang.String param,
java.lang.Object value) |
protected static <T> Params |
setDefault(Param<T> param,
T value) |
protected static Params |
setDefault(scala.collection.Seq<ParamPair<?>> paramPairs) |
MinMaxScaler |
setInputCol(java.lang.String value) |
MinMaxScaler |
setMax(double value) |
MinMaxScaler |
setMin(double value) |
MinMaxScaler |
setOutputCol(java.lang.String value) |
static java.lang.String |
toString() |
StructType |
transformSchema(StructType schema)
:: DeveloperApi ::
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java.lang.String |
uid()
An immutable unique ID for the object and its derivatives.
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protected static StructType |
validateAndTransformSchema(StructType schema) |
StructType |
validateAndTransformSchema(StructType schema)
Validates and transforms the input schema.
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static void |
validateParams() |
static MLWriter |
write() |
transformSchema
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
clear, copyValues, defaultCopy, defaultParamMap, explainParam, explainParams, extractParamMap, extractParamMap, get, getDefault, getOrDefault, getParam, hasDefault, hasParam, isDefined, isSet, paramMap, params, set, set, set, setDefault, setDefault, shouldOwn, validateParams
toString
public MinMaxScaler(java.lang.String uid)
public MinMaxScaler()
public static MinMaxScaler load(java.lang.String path)
public static java.lang.String toString()
public static Param<?>[] params()
public static void validateParams()
public static java.lang.String explainParam(Param<?> param)
public static java.lang.String explainParams()
public static final boolean isSet(Param<?> param)
public static final boolean isDefined(Param<?> param)
public static boolean hasParam(java.lang.String paramName)
public static Param<java.lang.Object> getParam(java.lang.String paramName)
protected static final Params set(java.lang.String param, java.lang.Object value)
public static final <T> scala.Option<T> get(Param<T> param)
public static final <T> T getOrDefault(Param<T> param)
protected static final <T> T $(Param<T> param)
public static final <T> scala.Option<T> getDefault(Param<T> param)
public static final <T> boolean hasDefault(Param<T> param)
public static final ParamMap extractParamMap()
protected static java.lang.String logName()
protected static org.slf4j.Logger log()
protected static void logInfo(scala.Function0<java.lang.String> msg)
protected static void logDebug(scala.Function0<java.lang.String> msg)
protected static void logTrace(scala.Function0<java.lang.String> msg)
protected static void logWarning(scala.Function0<java.lang.String> msg)
protected static void logError(scala.Function0<java.lang.String> msg)
protected static void logInfo(scala.Function0<java.lang.String> msg, java.lang.Throwable throwable)
protected static void logDebug(scala.Function0<java.lang.String> msg, java.lang.Throwable throwable)
protected static void logTrace(scala.Function0<java.lang.String> msg, java.lang.Throwable throwable)
protected static void logWarning(scala.Function0<java.lang.String> msg, java.lang.Throwable throwable)
protected static void logError(scala.Function0<java.lang.String> msg, java.lang.Throwable throwable)
protected static boolean isTraceEnabled()
protected static void initializeLogIfNecessary(boolean isInterpreter)
public static final Param<java.lang.String> inputCol()
public static final java.lang.String getInputCol()
public static final Param<java.lang.String> outputCol()
public static final java.lang.String getOutputCol()
public static DoubleParam min()
public static double getMin()
public static DoubleParam max()
public static double getMax()
protected static StructType validateAndTransformSchema(StructType schema)
public static void save(java.lang.String path) throws java.io.IOException
java.io.IOException
public static MLWriter write()
public java.lang.String uid()
Identifiable
uid
in interface Identifiable
public MinMaxScaler setInputCol(java.lang.String value)
public MinMaxScaler setOutputCol(java.lang.String value)
public MinMaxScaler setMin(double value)
public MinMaxScaler setMax(double value)
public MinMaxScalerModel fit(Dataset<?> dataset)
Estimator
fit
in class Estimator<MinMaxScalerModel>
dataset
- (undocumented)public StructType transformSchema(StructType schema)
PipelineStage
Derives the output schema from the input schema.
transformSchema
in class PipelineStage
schema
- (undocumented)public MinMaxScaler copy(ParamMap extra)
Params
copy
in interface Params
copy
in class Estimator<MinMaxScalerModel>
extra
- (undocumented)defaultCopy()
public DoubleParam min()
public double getMin()
public DoubleParam max()
public double getMax()
public StructType validateAndTransformSchema(StructType schema)