public String toString() {
String format = "%d,%.4f,%.4f,%.4f," + "%.6f,%.6f,%.4f," + "%.4f,%.4f," + "%.4f,%.4f\n";
return String.format(
format,
t,
p_f_t,
p_t,
p_lt,
r_log_t,
r_abs_t,
spread,
hftWealth.getMean(),
hftWealth.getVariance(),
hftFreq.getMean(),
hftFreq.getVariance());
}
private void writeErrorFile(DescriptiveStatistics error, String file, boolean append) {
try {
BufferedWriter writer = new BufferedWriter(new FileWriter(file, append));
if (!append) {
// write header
writer.write("mean\tvar\tstderr\tmin\tmax");
writer.newLine();
}
writer.write(String.valueOf(error.getMean()));
writer.write("\t");
writer.write(String.valueOf(error.getVariance()));
writer.write("\t");
writer.write(String.valueOf(error.getStandardDeviation()));
writer.write("\t");
writer.write(String.valueOf(error.getMin()));
writer.write("\t");
writer.write(String.valueOf(error.getMax()));
writer.newLine();
writer.close();
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void notifyAfterMobsim(AfterMobsimEvent event) {
Network network = event.getServices().getScenario().getNetwork();
DescriptiveStatistics error = new DescriptiveStatistics();
DescriptiveStatistics errorAbs = new DescriptiveStatistics();
DescriptivePiStatistics errorWeighted = new WSMStatsFactory().newInstance();
TDoubleArrayList errorVals = new TDoubleArrayList();
TDoubleArrayList caps = new TDoubleArrayList();
TDoubleArrayList speeds = new TDoubleArrayList();
for (Count count : counts.getCounts().values()) {
if (!count.getId().toString().startsWith(ODCalibrator.VIRTUAL_ID_PREFIX)) {
double obsVal = 0;
for (int i = 1; i < 25; i++) {
obsVal += count.getVolume(i).getValue();
}
if (obsVal > 0) {
double simVal = calculator.getOccupancy(count.getId());
simVal *= factor;
double err = (simVal - obsVal) / obsVal;
error.addValue(err);
errorAbs.addValue(Math.abs(err));
errorWeighted.addValue(Math.abs(err), 1 / obsVal);
Link link = network.getLinks().get(count.getId());
errorVals.add(Math.abs(err));
caps.add(link.getCapacity());
speeds.add(link.getFreespeed());
}
}
}
logger.info(
String.format(
"Relative counts error: mean = %s, var = %s, stderr = %s, min = %s, max = %s",
error.getMean(),
error.getVariance(),
error.getStandardDeviation(),
error.getMin(),
error.getMax()));
logger.info(
String.format(
"Absolute relative counts error: mean = %s, var = %s, stderr = %s, min = %s, max = %s",
errorAbs.getMean(),
errorAbs.getVariance(),
errorAbs.getStandardDeviation(),
errorAbs.getMin(),
errorAbs.getMax()));
logger.info(
String.format(
"Absolute weigthed relative counts error: mean = %s, var = %s, stderr = %s, min = %s, max = %s",
errorWeighted.getMean(),
errorWeighted.getVariance(),
errorWeighted.getStandardDeviation(),
errorWeighted.getMin(),
errorWeighted.getMax()));
String outdir = event.getServices().getControlerIO().getIterationPath(event.getIteration());
try {
TDoubleDoubleHashMap map = Correlations.mean(caps.toArray(), errorVals.toArray());
StatsWriter.writeHistogram(
map, "capacity", "counts", String.format("%s/countsError.capacity.txt", outdir));
map = Correlations.mean(speeds.toArray(), errorVals.toArray());
StatsWriter.writeHistogram(
map, "speed", "counts", String.format("%s/countsError.speed.txt", outdir));
StatsWriter.writeHistogram(
Histogram.createHistogram(error, new LinearDiscretizer(0.1), false),
"Error",
"Frequency",
String.format("%s/countsError.hist.txt", outdir));
StatsWriter.writeHistogram(
Histogram.createHistogram(errorAbs, new LinearDiscretizer(0.1), false),
"Error (absolute)",
"Frequency",
String.format("%s/countsErrorAbs.hist.txt", outdir));
StatsWriter.writeHistogram(
Histogram.createHistogram(errorWeighted, new LinearDiscretizer(0.1), true),
"Error (weighted)",
"Frequency",
String.format("%s/countsErrorWeighted.hist.txt", outdir));
CountsCompare2GeoJSON.write(calculator, counts, factor, network, outdir);
NetworkLoad2GeoJSON.write(
event.getServices().getScenario().getNetwork(),
calculator,
factor,
outdir + "/network.json");
} catch (Exception e) {
e.printStackTrace();
}
String rootOutDir = event.getServices().getControlerIO().getOutputPath();
boolean append = false;
if (event.getIteration() > 0) {
append = true;
}
writeErrorFile(error, String.format("%s/countsError.txt", rootOutDir), append);
writeErrorFile(errorAbs, String.format("%s/countsAbsError.txt", rootOutDir), append);
}
/**
* Get the variance of y values.
*
* @return y values variance
*/
public double getYVariance() {
return yData.getVariance();
}
/**
* Get the variance of x values.
*
* @return x values variance
*/
public double getXVariance() {
return xData.getVariance();
}