Ghost Rating formula incorrectly listed on /ghostRatings.php

[echidna]

Hi, I looked at the details of GhostRatings, described on page https://webdiplomacy.net/ghostRatings.php
I believe the formula listed there:
ratingAdjustment = x * (expectedScore - actualScore)
is INCORRECT!
It should read:
ratingAdjustment = x * (actualScore - expectedScore)

I found the piece of code:
$grAdjustment[$userID] = (($grSum / $this->modvalue) * ($actualResult[$userID]-$expectedResult[$userID]));
this clearly shows actual... - expected...

[Doug7878]

The (inquisitive) force is strong with this one. Yes, its clearly stated in reverse.

Can you fix the info page? If not, I guess you would send it to kestas. ( ? )

[gimix]

@Squigs, are you still around?

[gimix]

(newer members info):
Squigs44 has been a very active and important member of this site, and contributed some nice pieces of code, including the full Ghost Rating system.

We are happy that he reversed Actual and Expected in the explanation, not in the code

[x3n]

While I appreciate the work, if Ghost Rating still encourages people to drop out of a game before they lose, and never help out a stalled game by taking up a doomed position, then I think it must still be considered a "work in progress".

[JECE]

While I appreciate the work, if Ghost Rating still encourages people to . . . never help out a stalled game by taking up a doomed position, then I think it must still be considered a "work in progress".

Restore PPSC and restore the practice of betting on joining games in progress. Problem solved without touching the Ghost Rating code!