krishnanraman

import java.awt.image.{BufferedImage, WritableRaster}
import javax.imageio.ImageIO
import java.io.File

object grayscale extends App {
	val (imgtype, imagefile, copyfile) = (args(0), args(1), args(2))
	val img = ImageIO.read(new File(imagefile))
	val mytype = img.getType
	val raster:WritableRaster = img.getRaster
	val (w,h) = (img.getWidth, img.getHeight)

krishnanraman

def mean(d:Data) = d.sum/d.size

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def variance(d:Data) = {
    val mu = mean(d)
    mean(d.map(i => (i-mu)*(i-mu)))
}

def stdev(d:Data) = math.sqrt(variance(d))

krishnanraman

def scale(x:Data) = {
    val scaler = x.max - x.min
    val min = x.min
    (x.map { i => (i-min)/scaler }, min, scaler)
  }

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def normalize(x:Data) = {
    val mu = OLS.mean(x)
    val sigma = OLS.stdev(x)
    (x.map{ i=> (i - mu)/sigma }, mu, sigma)
  }

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def corr(x:Data, y:Data) = mean(x.zip(y).map(xy => xy._1 *  xy._2))

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case "qualitative" =>
        val sorted = rows
        .groupBy(x=>x)
        .map { xy => (xy._1, xy._2.size) }
        .toList
        .sortBy(x=>x._2)
        .reverse
        val py = sorted.head._2
        val px = rows.distinct.map(w => w.length).max
        sorted.map { i=>

krishnanraman

object GSSJob extends App { // A Data Mining job sourcing from General Social Survey (GSS) data.

  val in = args(0) // input file
  val task = args(1) // job, histo etc.
  val data = src
  val columnHeader = data.head

  task match {
    case "job" => job
    case "histo" => histo

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    val (x:Data, y:Data) = dataxy.toIndexedSeq.unzip

    val (scaledx, xmin, xscaler) = scale(x)
    val (scaledy, ymin, yscaler) = scale(y)

    val ysq = scaledx.zip(scaledy).map{ xy => val(x,y) = xy; y - x*x }

    val (normx, mux, sigmax) = normalize(scaledx)
    val (normy, muy, sigmay) = normalize(ysq)
    val corr = OLS.corr(normx,normy)

krishnanraman

<SCRIPT language="JavaScript">
function fc(form) {
var Age   = eval(form.age.value);
var Freq = (210 * ((Age - 18)/71)*((Age - 18)/71)) - (311*(Age - 18)/71) + 133
form.freq.value = parseInt(Freq)
}
</script>

<FORM METHOD = "post">
Age: <INPUT name= "age" value="18" size="2" type="text">