程序包 org.apache.flink.ml.clustering.kmeans

类 KMeansModelData

java.lang.Object

org.apache.flink.ml.clustering.kmeans.KMeansModelData

public class KMeansModelData
extends Object

Model data of KMeansModel and OnlineKMeansModel.

This class also provides methods to convert model data from Table to Datastream, and classes to save/load model data.

嵌套类概要

嵌套类

修饰符和类型	类	说明
static class	KMeansModelData.ModelDataDecoder	Data decoder for KMeansModelData.
static class	KMeansModelData.ModelDataEncoder	Data encoder for KMeansModelData.

字段概要

字段

修饰符和类型	字段	说明
org.apache.flink.ml.linalg.DenseVector[]	centroids
org.apache.flink.ml.linalg.DenseVector	weights	The weight of the centroids.

构造器概要

构造器

构造器	说明
KMeansModelData()
KMeansModelData(org.apache.flink.ml.linalg.DenseVector[] centroids, org.apache.flink.ml.linalg.DenseVector weights)

方法概要

修饰符和类型	方法	说明
static org.apache.flink.table.api.Table	generateRandomModelData(org.apache.flink.table.api.bridge.java.StreamTableEnvironment tEnv, int k, int dim, double weight, long seed)	Generates a Table containing a KMeansModelData instance with randomly generated centroids.
static org.apache.flink.streaming.api.datastream.DataStream<KMeansModelData>	getModelDataStream(org.apache.flink.table.api.Table modelData)	Converts the table model to a data stream.

从类继承的方法 java.lang.Object

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

字段详细资料

centroids

public org.apache.flink.ml.linalg.DenseVector[] centroids

weights

public org.apache.flink.ml.linalg.DenseVector weights

The weight of the centroids. It is used when updating the model data in online training process.

KMeansModelData objects generated during KMeans.fit(Table...) also contains this field, so that it can be used as the initial model data of the online training process.

构造器详细资料

KMeansModelData

public KMeansModelData(org.apache.flink.ml.linalg.DenseVector[] centroids,
                       org.apache.flink.ml.linalg.DenseVector weights)

KMeansModelData

public KMeansModelData()

方法详细资料

generateRandomModelData

public static org.apache.flink.table.api.Table generateRandomModelData(org.apache.flink.table.api.bridge.java.StreamTableEnvironment tEnv,
                                                                       int k,
                                                                       int dim,
                                                                       double weight,
                                                                       long seed)

Generates a Table containing a KMeansModelData instance with randomly generated centroids.

参数:

tEnv - The environment where to create the table.

k - The number of generated centroids.

dim - The size of generated centroids.

weight - The weight of the centroids.

seed - Random seed.

getModelDataStream

public static org.apache.flink.streaming.api.datastream.DataStream<KMeansModelData> getModelDataStream(org.apache.flink.table.api.Table modelData)

Converts the table model to a data stream.

参数:

modelData - The table model data.

返回:

The data stream model data.