/*
* Copyright 2017 Zhang Di
*
* Licensed 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.dizhang.seqspark.stat
import breeze.linalg.{DenseVector, sum}
import org.dizhang.seqspark.stat.LinearCombinationChiSquare._
/**
* Linear Combination of Chi-Square distributions
*
*/
@SerialVersionUID(7778520001L)
trait LinearCombinationChiSquare extends Serializable {
def lambda: DenseVector[Double]
def nonCentrality: DenseVector[Double]
def degreeOfFreedom: DenseVector[Double]
def cdf(cutoff: Double): CDF
val meanLambda: Double = sum(lambda)
val size: Int = lambda.length
}
object LinearCombinationChiSquare {
@SerialVersionUID(7778550101L)
trait CDF extends Serializable {
def pvalue: Double
def ifault: Int
def trace: Array[Double]
}
}
