Difference between revisions of "Bin Smoothing"

From Robowiki
Jump to navigation Jump to search
(Undo revision 8179 by Synapse (Talk) - see discussion)
Line 44: Line 44:
 
<pre>1.0/(double)(1 + (index - count)*(index - count))</pre>
 
<pre>1.0/(double)(1 + (index - count)*(index - count))</pre>
  
==Bots Using Bin Smoothing==
+
== Bots that use this technique ==
(Please post your Bots here if they use Bin Smoothing)
+
* [[DrussGT]]
 +
* [[Dookious]]
 +
* [[Phoenix]]
 +
* [[BasicSurfer]]
 +
* ''(all VCS wave surfers)''

Revision as of 14:16, 10 June 2009

This article is a stub. You can help RoboWiki by expanding it.

Bin Smoothing is the process of spreading or normalizing the values stored in a Bin for Wave Surfing or Segmentation. It's not needed for Wave Surfing or Segmentation, but can, in theory, improve performance if done right.

How Bin Smoothing works

Bin Smoothing 'flattens' small spikes within it's Bins.

Bin Smoothing Formulas

If you have your own Bin Smoothing Formula, feel free to post it here.

Pugilist's

    double smoothedVisits(int index) {
	double smoothed = 0;
	int i = 0;
	do {
	    smoothed += (double)visits[i] / Math.sqrt((double)(Math.abs(index - i) + 1.0));
	    i++;
	} while (i < Pugilist.FACTORS);
	return smoothed / Math.pow(distanceToTarget() / bulletVelocity, 1.3);
    }

PPP

double smoothedVisits(int index) {
    double smoothed = 0;
    if (index > 0) {
        smoothed += visits[index - 1] / 2;
    }
    if (index < FACTORS - 1) {
        smoothed += visits[index + 1] / 2;
    }
    smoothed += visits[index];
    return smoothed;
}

Other ways

Math.pow(0.5, Math.abs(index - count))

This does a 50% decrease.

Math.pow(0.1, Math.abs(index - count))

This does a 90% decrease

1.0/(double)(1 + (index - count)*(index - count))

Bots that use this technique