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

类 HashingTF

java.lang.Object

org.apache.flink.ml.feature.hashingtf.HashingTF

所有已实现的接口:

Serializable, org.apache.flink.ml.api.AlgoOperator<HashingTF>, org.apache.flink.ml.api.Stage<HashingTF>, org.apache.flink.ml.api.Transformer<HashingTF>, org.apache.flink.ml.common.param.HasInputCol<HashingTF>, org.apache.flink.ml.common.param.HasNumFeatures<HashingTF>, org.apache.flink.ml.common.param.HasOutputCol<HashingTF>, HashingTFParams<HashingTF>, org.apache.flink.ml.param.WithParams<HashingTF>

public class HashingTF
extends Object
implements org.apache.flink.ml.api.Transformer<HashingTF>, HashingTFParams<HashingTF>

A Transformer that maps a sequence of terms(strings, numbers, booleans) to a sparse vector with a specified dimension using the hashing trick.

If multiple features are projected into the same column, the output values are accumulated by default. Users could also enforce all non-zero output values as 1 by setting HashingTFParams.BINARY as true.

For the hashing trick, see https://en.wikipedia.org/wiki/Feature_hashing for details.

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	HashingTF.HashTFFunction	The main logic of HashingTF, which converts the input to a sparse vector.

字段概要

从接口继承的字段 org.apache.flink.ml.feature.hashingtf.HashingTFParams

BINARY

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.HasNumFeatures

NUM_FEATURES

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

OUTPUT_COL

构造器概要

构造器

构造器	说明
HashingTF()

方法概要

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

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.feature.hashingtf.HashingTFParams

getBinary, setBinary

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.HasNumFeatures

getNumFeatures, setNumFeatures

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.param.WithParams

get, getParam, set

构造器详细资料

HashingTF

public HashingTF()

方法详细资料

transform

public org.apache.flink.table.api.Table[] transform(org.apache.flink.table.api.Table... inputs)

指定者:

transform 在接口中 org.apache.flink.ml.api.AlgoOperator<HashingTF>

save

public void save(String path)
          throws IOException

指定者:

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

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<HashingTF>

load

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

抛出:

IOException