程序包 org.apache.flink.ml.feature.idf

类 IDF

java.lang.Object

org.apache.flink.ml.feature.idf.IDF

所有已实现的接口:

Serializable, org.apache.flink.ml.api.Estimator<IDF,IDFModel>, org.apache.flink.ml.api.Stage<IDF>, org.apache.flink.ml.common.param.HasInputCol<IDF>, org.apache.flink.ml.common.param.HasOutputCol<IDF>, IDFModelParams<IDF>, IDFParams<IDF>, org.apache.flink.ml.param.WithParams<IDF>

public class IDF
extends Object
implements org.apache.flink.ml.api.Estimator<IDF,IDFModel>, IDFParams<IDF>

An Estimator that computes the inverse document frequency (IDF) for the input documents. IDF is computed following `idf = log((m + 1) / (d(t) + 1))`, where `m` is the total number of documents and `d(t)` is the number of documents that contains `t`.

Users could filter out terms that appeared in little documents by setting IDFParams.getMinDocFreq().

See https://en.wikipedia.org/wiki/Tf%E2%80%93idf.

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.HasOutputCol

OUTPUT_COL

从接口继承的字段 org.apache.flink.ml.feature.idf.IDFParams

MIN_DOC_FREQ

构造器概要

构造器

构造器	说明
IDF()

方法概要

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

getMinDocFreq, setMinDocFreq

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

get, getParam, set

构造器详细资料

IDF

public IDF()

方法详细资料

fit

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

指定者:

fit 在接口中 org.apache.flink.ml.api.Estimator<IDF,IDFModel>

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<IDF>

save

public void save(String path)
          throws IOException

指定者:

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

抛出:

IOException

load

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

抛出:

IOException