spark LabeledPoint 源码
spark LabeledPoint 代码
文件路径：/mllib/src/main/scala/org/apache/spark/ml/feature/LabeledPoint.scala
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.spark.ml.feature
import org.apache.spark.annotation.Since
import org.apache.spark.ml.linalg.Vector
/**
*
* Class that represents the features and label of a data point.
*
* @param label Label for this data point.
* @param features List of features for this data point.
*/
@Since("2.0.0")
case class LabeledPoint(@Since("2.0.0") label: Double, @Since("2.0.0") features: Vector) {
def getLabel: Double = label
def getFeatures: Vector = features
override def toString: String = {
s"($label,$features)"
}
private[spark] def toInstance(weight: Double): Instance = {
Instance(label, weight, features)
}
private[spark] def toInstance: Instance = {
Instance(label, 1.0, features)
}
}
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