程序包 org.apache.flink.ml.feature.minmaxscaler

类 MinMaxScaler

java.lang.Object

org.apache.flink.ml.feature.minmaxscaler.MinMaxScaler

所有已实现的接口:

Serializable, org.apache.flink.ml.api.Estimator<MinMaxScaler,MinMaxScalerModel>, org.apache.flink.ml.api.Stage<MinMaxScaler>, org.apache.flink.ml.common.param.HasInputCol<MinMaxScaler>, org.apache.flink.ml.common.param.HasOutputCol<MinMaxScaler>, MinMaxScalerParams<MinMaxScaler>, org.apache.flink.ml.param.WithParams<MinMaxScaler>

public class MinMaxScaler
extends Object
implements org.apache.flink.ml.api.Estimator<MinMaxScaler,MinMaxScalerModel>, MinMaxScalerParams<MinMaxScaler>

An Estimator which implements the MinMaxScaler algorithm. This algorithm rescales feature values to a common range [min, max] defined by user.

$$ Rescaled(value) = \frac{value - E_{min}}{E_{max} - E_{min}} * (max - min) + min $$

For the case \(E_{max} == E_{min}\), \(Rescaled(value) = 0.5 * (max + min)\).

See https://en.wikipedia.org/wiki/Feature_scaling#Rescaling_(min-max_normalization).

另请参阅:

序列化表格

嵌套类概要

嵌套类

修饰符和类型	类	说明
static class	MinMaxScaler.MinMaxReduceFunctionOperator	A stream operator to compute the min and max values in each partition of the input bounded data stream.

字段概要

从接口继承的字段 org.apache.flink.ml.common.param.HasInputCol

INPUT_COL

从接口继承的字段 org.apache.flink.ml.common.param.HasOutputCol

OUTPUT_COL

从接口继承的字段 org.apache.flink.ml.feature.minmaxscaler.MinMaxScalerParams

MAX, MIN

构造器概要

构造器

构造器	说明
MinMaxScaler()

方法概要

修饰符和类型	方法	说明
MinMaxScalerModel	fit(org.apache.flink.table.api.Table... inputs)
Map<org.apache.flink.ml.param.Param<?>,Object>	getParamMap()
static MinMaxScaler	load(org.apache.flink.table.api.bridge.java.StreamTableEnvironment tEnv, String path)
void	save(String path)

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 org.apache.flink.ml.common.param.HasInputCol

getInputCol, setInputCol

从接口继承的方法 org.apache.flink.ml.common.param.HasOutputCol

getOutputCol, setOutputCol

从接口继承的方法 org.apache.flink.ml.feature.minmaxscaler.MinMaxScalerParams

getMax, getMin, setMax, setMin

从接口继承的方法 org.apache.flink.ml.param.WithParams

get, getParam, set

构造器详细资料

MinMaxScaler

public MinMaxScaler()

方法详细资料

fit

public MinMaxScalerModel fit(org.apache.flink.table.api.Table... inputs)

指定者:

fit 在接口中 org.apache.flink.ml.api.Estimator<MinMaxScaler,MinMaxScalerModel>

getParamMap

public Map<org.apache.flink.ml.param.Param<?>,Object> getParamMap()

指定者:

getParamMap 在接口中 org.apache.flink.ml.param.WithParams<MinMaxScaler>

save

public void save(String path)
          throws IOException

指定者:

save 在接口中 org.apache.flink.ml.api.Stage<MinMaxScaler>

抛出:

IOException

load

public static MinMaxScaler load(org.apache.flink.table.api.bridge.java.StreamTableEnvironment tEnv,
                                String path)
                         throws IOException

抛出:

IOException