PHP实现简单线性回归之数学库的重要性

作者佚名技术来源 NET编程浏览发布时间 2012-05-25

("Error: Size of X and Y vectors must be the same.");
}
if ($numX <= 1) {
    die("Error: Size of input array must be at least 2.");
}

$this->n               = $numX;
$this->X               = $X;
$this->Y               = $Y;

$this->ConfInt         = $ConfidenceInterval;
$this->Alpha           = (1 + ($this->ConfInt / 100) ) / 2;
$this->XMean           = $this->getMean($this->X);
$this->YMean           = $this->getMean($this->Y);
$this->SumXX           = $this->getSumXX();
$this->SumYY           = $this->getSumYY();
$this->SumXY           = $this->getSumXY();
$this->Slope           = $this->getSlope();
$this->YInt            = $this->getYInt();
$this->PredictedY      = $this->getPredictedY();
$this->Error           = $this->getError();
$this->SquaredError    = $this->getSquaredError();
$this->SumError        = $this->getSumError();
$this->TotalError      = $this->getTotalError();
$this->SumSquaredError = $this->getSumSquaredError();
$this->ErrorVariance   = $this->getErrorVariance();
$this->StdErr          = $this->getStdErr();
$this->SlopeStdErr     = $this->getSlopeStdErr();
$this->YIntStdErr      = $this->getYIntStdErr();
$this->SlopeTVal       = $this->getSlopeTVal();
$this->YIntTVal        = $this->getYIntTVal();
$this->R          &n

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