Ejemplo n.º 1
0
    public List <AnomalyReport> detect(Timeseries ts)
    {
        List <AnomalyReport> vector = new List <AnomalyReport>();
        int i = 0;

        foreach (correlatedFeatures var in cf)
        {
            for (int j = 0; j < ts.table.First().Value.Count(); ++j)
            { // Loop through the map.
                int iter = -1;
                // Loop through the cf vector.
                iter++;
                float   floatA = ts.table[var.feature1][j];
                float   floatB = ts.table[var.feature2][j];
                dynamic p      = new Point(floatA, floatB); // A point represent the two current features.

                //float correlation = dev(*p, i->lin_reg);
                // Case the correlation is bigger then the threshold determined by the current correlation deviation.
                if (isAnomalous(var, p))
                {
                    string        description = var.feature1 + "-" + var.feature2;
                    long          timeStep    = j + 1;                                    // For time step to start with 1 instead of 0.
                    AnomalyReport ar          = new AnomalyReport(description, timeStep); // Build a anomaly report with those features.
                    vector.Add(ar);
                }
            }
            i++;
        }
        return(vector);
    }
Ejemplo n.º 2
0
    public List <AnomalyReport> detect(Timeseries ts)
    {
        List <AnomalyReport> anomalies = new List <AnomalyReport>();
        int numOfRows = ts.NumOfRows;
        int cfLen     = cf.Count;

        for (int cfIndex = 0; cfIndex < cfLen; cfIndex++)
        {
            for (int timeStep = 0; timeStep < numOfRows; timeStep++)
            {
                if (isAnomaly(ts, cf[cfIndex], timeStep))
                {
                    //cout << "Anomaly found at " << timeStep + 1 << ": " << currDev << " crossed " << cf[cfIndex].threshold << std::endl;
                    AnomalyReport report = new AnomalyReport(cf[cfIndex].feature1 + "-" + cf[cfIndex].feature2, timeStep + 1);
                    anomalies.Add(report);
                }
            }
        }
        return(anomalies);
    }