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

类 OnlineStandardScaler

java.lang.Object

org.apache.flink.ml.feature.standardscaler.OnlineStandardScaler

所有已实现的接口:

Serializable, org.apache.flink.ml.api.Estimator<OnlineStandardScaler,OnlineStandardScalerModel>, org.apache.flink.ml.api.Stage<OnlineStandardScaler>, org.apache.flink.ml.common.param.HasInputCol<OnlineStandardScaler>, org.apache.flink.ml.common.param.HasMaxAllowedModelDelayMs<OnlineStandardScaler>, org.apache.flink.ml.common.param.HasModelVersionCol<OnlineStandardScaler>, org.apache.flink.ml.common.param.HasOutputCol<OnlineStandardScaler>, HasWindows<OnlineStandardScaler>, OnlineStandardScalerModelParams<OnlineStandardScaler>, OnlineStandardScalerParams<OnlineStandardScaler>, StandardScalerParams<OnlineStandardScaler>, org.apache.flink.ml.param.WithParams<OnlineStandardScaler>

public class OnlineStandardScaler
extends Object
implements org.apache.flink.ml.api.Estimator<OnlineStandardScaler,OnlineStandardScalerModel>, OnlineStandardScalerParams<OnlineStandardScaler>

An Estimator which implements the online standard scaling algorithm, which is the online version of StandardScaler.

OnlineStandardScaler splits the input data by the user-specified window strategy (i.e., HasWindows). For each window, it computes the mean and standard deviation using the data seen so far (i.e., not only the data in the current window, but also the history data). The model data generated by OnlineStandardScaler is a model stream. There is one model data for each window.

During the inference phase (i.e., using OnlineStandardScalerModel for prediction), users could output the model version that is used for predicting each data point. Moreover,

• When the train data and test data both contain event time, users could specify the maximum difference between the timestamps of the input and model data (HasMaxAllowedModelDelayMs), which enforces to use a relatively fresh model for prediction.
• Otherwise, the prediction process always uses the current model data for prediction.

另请参阅:

序列化表格

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.HasMaxAllowedModelDelayMs

MAX_ALLOWED_MODEL_DELAY_MS

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

MODEL_VERSION_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.common.param.HasWindows

WINDOWS

从接口继承的字段 org.apache.flink.ml.feature.standardscaler.StandardScalerParams

WITH_MEAN, WITH_STD

构造器概要

构造器

构造器	说明
OnlineStandardScaler()

方法概要

修饰符和类型	方法	说明
OnlineStandardScalerModel	fit(org.apache.flink.table.api.Table... inputs)
Map<org.apache.flink.ml.param.Param<?>,Object>	getParamMap()
static OnlineStandardScaler	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.HasMaxAllowedModelDelayMs

getMaxAllowedModelDelayMs, setMaxAllowedModelDelayMs

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

getModelVersionCol, setModelVersionCol

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.common.param.HasWindows

getWindows, setWindows

从接口继承的方法 org.apache.flink.ml.feature.standardscaler.StandardScalerParams

getWithMean, getWithStd, setWithMean, setWithStd

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

get, getParam, set

构造器详细资料

OnlineStandardScaler

public OnlineStandardScaler()

方法详细资料

fit

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

指定者:

fit 在接口中 org.apache.flink.ml.api.Estimator<OnlineStandardScaler,OnlineStandardScalerModel>

save

public void save(String path)
          throws IOException

指定者:

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

抛出:

IOException

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<OnlineStandardScaler>

load

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

抛出:

IOException