private float[] getDynamicDecoder(int i, float input, float startTime, float endTime) {
float[] result = myDecoders[i];
if (mySTPDynamicsTemplate
!= null) { // TODO: could use a NullDynamics here instead of null (to allow nulling in
// config tree)
// TODO: could recycle a mutable time series here to avoid object creation
TimeSeries inputSeries =
new TimeSeries1DImpl(
new float[] {startTime, endTime}, new float[] {input, input}, Units.UNK);
TimeSeries outputSeries = myIntegrator.integrate(mySTPDynamics[i], inputSeries);
float scaleFactor = outputSeries.getValues()[outputSeries.getValues().length - 1][0];
mySTPHistory[i] = scaleFactor;
result = MU.prod(result, scaleFactor);
}
return result;
}
/**
* With this constructor the target is a signal over time rather than a function.
*
* @param node The parent Node
* @param name As in other constructor
* @param nodes As in other constructor
* @param nodeOrigin Name of the Origin on each given node from which output is to be decoded
* @param targetSignal Signal over time that this origin should produce.
* @param approximator A LinearApproximator that can be used to approximate new signals as a
* weighted sum of the node outputs.
*/
public DecodedOrigin(
Node node,
String name,
Node[] nodes,
String nodeOrigin,
TimeSeries targetSignal,
LinearApproximator approximator)
throws StructuralException {
myNode = node;
myName = name;
myNodes = nodes;
myNodeOrigin = nodeOrigin;
myFunctions = new FixedSignalFunction[targetSignal.getDimension()];
for (int i = 0; i < targetSignal.getDimension(); i++) // these are only used in direct mode
myFunctions[i] = new FixedSignalFunction(targetSignal.getValues(), i);
myDecoders = findDecoders(nodes, MU.transpose(targetSignal.getValues()), approximator);
myMode = SimulationMode.DEFAULT;
myIntegrator = new EulerIntegrator(.001f);
reset(false);
}