Scala abs类代码示例

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本文整理汇总了Scala中breeze.numerics.abs类的典型用法代码示例。如果您正苦于以下问题：Scala abs类的具体用法？Scala abs怎么用？Scala abs使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了abs类的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Scala代码示例。

示例1: TensorLDAModelTest

//设置package包名称以及导入依赖的类
package edu.uci.eecs.spectralLDA.algorithm

import breeze.linalg.{DenseMatrix, DenseVector, SparseVector, norm}
import breeze.numerics.abs
import org.scalatest._
import org.apache.spark.SparkContext
import edu.uci.eecs.spectralLDA.testharness.Context

class TensorLDAModelTest extends FlatSpec with Matchers {

  private val sc: SparkContext = Context.getSparkContext

  "Multinomial log-likelihood" should "be correct" in {
    val p = DenseVector[Double](0.2, 0.5, 0.3)
    val x1 = DenseVector[Double](20, 50, 30)
    val x2 = DenseVector[Double](40, 40, 20)

    abs(TensorLDAModel.multinomialLogLikelihood(p, x1) - (-4.697546)) should be <= 1e-6
    abs(TensorLDAModel.multinomialLogLikelihood(p, x2) - (-15.42038)) should be <= 1e-6
  }
}

开发者ID:Mega-DatA-Lab，项目名称:SpectralLDA-Spark，代码行数:22，代码来源:TensorLDAModelTest.scala

示例2: RandomSampling

//设置package包名称以及导入依赖的类
package com.burness.algorithm.preprocess

import breeze.numerics.abs
import com.burness.utils.AbstractParams
import org.apache.spark.SparkContext
import org.apache.spark.sql.hive.HiveContext
import scopt.OptionParser


class RandomSampling(sc: SparkContext) {



  case class Params(samplingRatio: Double =1.0,
                   inputTableName: String = null,
                    outputTableName: String = null)
  extends AbstractParams[Params]


  def parseParams(args: Array[String]): Params = {
    val defaultParams = Params()
    val parser = new OptionParser[Params]("RandomSampling") {
      head("Random Sampling Params parse")
      opt[String]("inputTableName")
        .text("data input path")
        .action((x, c) => c.copy(inputTableName = x))
      opt[String]("outputTableName")
        .text("data output path")
        .action((x, c) => c.copy(outputTableName = x))
      opt[Double]("samplingRatio")
        .text("random sampling ratio")
        .action((x, c) => c.copy(samplingRatio = x))
    }

      parser.parse(args, defaultParams) match {
        case Some(params) =>
          params
        case None =>
          defaultParams
      }

    }
  def run(params: Params): Unit ={
    val hiveContext = new HiveContext(sc)
    import hiveContext.implicits._
    import hiveContext.sql
    // ????????????0.7???????????0-9??????6???
    val result = sql(s"select * from ${params.inputTableName}").sample(withReplacement = false, params.samplingRatio)
    val r = scala.util.Random
    r.setSeed(System.currentTimeMillis())
    val tempNum = abs(r.nextInt())
    val tempName = "random_"+tempNum.toString+"_sample_table"
    result.registerTempTable(tempName)
    sql(s"create table ${params.outputTableName} as select * from $tempName")

  }


}

开发者ID:spark-mler，项目名称:algorithmEngine，代码行数:60，代码来源:RandomSampling.scala

注：本文中的breeze.numerics.abs类示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。