/**
* Updates the minimum duty cycles in a global fashion. Sets the minimum duty cycles for the
* overlap and activation of all columns to be a percent of the maximum in the region, specified
* by {@link Connections#getMinOverlapDutyCycles()} and minPctActiveDutyCycle respectively.
* Functionality it is equivalent to {@link #updateMinDutyCyclesLocal(Connections)}, but this
* function exploits the globalness of the computation to perform it in a straightforward, and
* more efficient manner.
*
* @param c
*/
public void updateMinDutyCyclesGlobal(Connections c) {
Arrays.fill(
c.getMinOverlapDutyCycles(),
c.getMinPctOverlapDutyCycles() * ArrayUtils.max(c.getOverlapDutyCycles()));
Arrays.fill(
c.getMinActiveDutyCycles(),
c.getMinPctActiveDutyCycles() * ArrayUtils.max(c.getActiveDutyCycles()));
}
/**
* Updates the minimum duty cycles. The minimum duty cycles are determined locally. Each column's
* minimum duty cycles are set to be a percent of the maximum duty cycles in the column's
* neighborhood. Unlike {@link #updateMinDutyCyclesGlobal(Connections)}, here the values can be
* quite different for different columns.
*
* @param c
*/
public void updateMinDutyCyclesLocal(Connections c) {
int len = c.getNumColumns();
for (int i = 0; i < len; i++) {
int[] maskNeighbors =
getNeighborsND(c, i, c.getMemory(), c.getInhibitionRadius(), true).toArray();
c.getMinOverlapDutyCycles()[i] =
ArrayUtils.max(ArrayUtils.sub(c.getOverlapDutyCycles(), maskNeighbors))
* c.getMinPctOverlapDutyCycles();
c.getMinActiveDutyCycles()[i] =
ArrayUtils.max(ArrayUtils.sub(c.getActiveDutyCycles(), maskNeighbors))
* c.getMinPctActiveDutyCycles();
}
}