@Override
public boolean isLocallyMonotone() throws java.lang.Exception {
int iNumSegment = _aLSRM.length;
for (int i = 0; i < iNumSegment; ++i) {
org.drip.spline.segment.Monotonocity mono = null;
try {
mono = _aLSRM[i].monotoneType();
} catch (java.lang.Exception e) {
e.printStackTrace();
}
if (null == mono || org.drip.spline.segment.Monotonocity.MONOTONIC != mono.type())
return false;
}
return true;
}
@Override
public boolean isCoMonotone(final double[] adblMeasuredResponse) throws java.lang.Exception {
int iNumSegment = _aLSRM.length;
int[] aiMonotoneType = new int[iNumSegment];
int[] aiNodeMiniMax = new int[iNumSegment + 1];
if (null == adblMeasuredResponse || adblMeasuredResponse.length != iNumSegment + 1)
throw new java.lang.Exception(
"CalibratableMultiSegmentSequence::isCoMonotone => Data input inconsistent with the segment");
for (int i = 0; i < iNumSegment + 1; ++i) {
if (0 == i || iNumSegment == i) aiNodeMiniMax[i] = MONOTONE_PREDICTOR_ORDINATE_NODE;
else {
if (adblMeasuredResponse[i - 1] < adblMeasuredResponse[i]
&& adblMeasuredResponse[i + 1] < adblMeasuredResponse[i])
aiNodeMiniMax[i] = MAXIMA_PREDICTOR_ORDINATE_NODE;
else if (adblMeasuredResponse[i - 1] > adblMeasuredResponse[i]
&& adblMeasuredResponse[i + 1] > adblMeasuredResponse[i])
aiNodeMiniMax[i] = MINIMA_PREDICTOR_ORDINATE_NODE;
else aiNodeMiniMax[i] = MONOTONE_PREDICTOR_ORDINATE_NODE;
}
if (i < iNumSegment) {
org.drip.spline.segment.Monotonocity mono = _aLSRM[i].monotoneType();
if (null != mono) aiMonotoneType[i] = mono.type();
}
}
for (int i = 1; i < iNumSegment; ++i) {
if (MAXIMA_PREDICTOR_ORDINATE_NODE == aiNodeMiniMax[i]) {
if (org.drip.spline.segment.Monotonocity.MAXIMA != aiMonotoneType[i]
&& org.drip.spline.segment.Monotonocity.MAXIMA != aiMonotoneType[i - 1]) return false;
} else if (MINIMA_PREDICTOR_ORDINATE_NODE == aiNodeMiniMax[i]) {
if (org.drip.spline.segment.Monotonocity.MINIMA != aiMonotoneType[i]
&& org.drip.spline.segment.Monotonocity.MINIMA != aiMonotoneType[i - 1]) return false;
}
}
return true;
}