public static RocCurve GetROC(GetRocParams pars, Region[] rgPeaks, Region[] rgNoises, IMotiff motiff)
{
var chrDic = new Dictionary<ChromosomeEnum, Chromosome>();
// подготовим данные для пиков
var vsPeak = new double[rgPeaks.Length];
for (int i = 0; i < rgPeaks.Length; i++)
{
var rgPeak = rgPeaks[i];
Chromosome c;
if (!chrDic.TryGetValue(rgPeak.Chr, out c))
chrDic.Add(rgPeak.Chr, c = ChrManager.GetChromosome(rgPeak.Chr));
var pack = c.GetPack(rgPeak.Start, rgPeak.Size);
vsPeak[i] = motiff.CalcMaxScore(pack);
}
Array.Sort(vsPeak);
int vsPeakId = 0;
// подготовим данные для шума
var vsNoise = new double[rgNoises.Length];
for (int i = 0; i < rgNoises.Length; i++)
{
var rgNoise = rgNoises[i];
Chromosome c;
if (!chrDic.TryGetValue(rgNoise.Chr, out c))
chrDic.Add(rgNoise.Chr, c = ChrManager.GetChromosome(rgNoise.Chr));
var pack = c.GetPack(rgNoise.Start, rgNoise.Size);
vsNoise[i] = motiff.CalcMaxScore(pack);
}
Array.Sort(vsNoise);
int vsNoiseId = 0;
// начинаем строить график
var x = new List<double>();
var y = new List<double>();
x.Add(100);
y.Add(100);
for (double thr = 0.0; thr <= 1.0; thr += 1.0/pars.DeltaCounts)
{
while (vsPeakId < vsPeak.Length && vsPeak[vsPeakId] < thr)
vsPeakId++;
while (vsNoiseId < vsNoise.Length && vsNoise[vsNoiseId] < thr)
vsNoiseId++;
var sensitivity = 100.0*(vsPeak.Length - vsPeakId)/vsPeak.Length;
var specifity = 100.0 * (vsNoise.Length - vsNoiseId) / vsNoise.Length;
y.Add(sensitivity);
x.Add(specifity);
}
x.Add(0);
y.Add(0);
return new RocCurve(motiff.ToString(), motiff.Count, x.ToArray(), y.ToArray(), motiff);
}
public RocCurve(string name, int count, double[] x, double[] y, IMotiff mf)
{
Name = name;
Count = count;
X = x;
Y = y;
Area = CalcArea(x.Reverse().ToArray(), y.Reverse().ToArray());
Motiff = mf;
}