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DPChallenge Forums >> General Discussion >> How can you get votes but
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Showing posts 1 - 11 of 11, (reverse)
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 10/25/2006 02:39:08 PM · #1
your score doesn't change? I have an entry in one of the currently running challenges and have been following the voting today for some reason. Anyway, my score is x.9933 at 147 votes. After vote 148 it was still x.9933. And again after votes 149 and 150 it has not changed from x.9933. How can this be?
 10/25/2006 02:41:39 PM · #2
Say the X is a 6. If someone votes you a 7, after 149 votes and with the average being so close to 7 anyway, the first 4 decimal places are not likely to change. Maybe the 6th or 7th decimals changed but not the ones DPC shows.
 10/25/2006 02:43:48 PM · #3
Even after 3 votes? How many decimals does the system use? Any idea?
 10/25/2006 02:45:45 PM · #4
It uses an infinate number decimals I guess, to calculate the exact average. The difference a 7 or three will make to a 6.99 average after 149 votes is probably to small but I can't be 100% sure. Some mathsy person can probably work it out for you :)
 10/25/2006 02:53:07 PM · #5
did some basic math and konador's explanation is right on three 7s could make it still show the same score or possbile make it go to 6.9934 epending on a few factors but always remember that someone could be adjsuting thier vote up or down at the sametime someone else is voting
 10/25/2006 03:07:11 PM · #6
Some quick Excel work shows that Konador's explanation is a good one.
*Applause*

If you have an average of 4.9933 and receive a 5, the average will remain at 4.9933 (actually 4.99334467, but who's counting)- assuming 149 votes cast.

With the same average and 3 5's, the average score bounds up to a magical 4.993432237.

Some days I love excel.

Edit to eliminate my unreadable chart.

Message edited by author 2006-10-25 15:12:40.
 10/25/2006 03:29:51 PM · #7
Originally posted by Konador:
It uses an infinate number decimals I guess, to calculate the exact average.


Assuming the voting system recalculates from a database of stored votes each time the update button is resses (or automatically updated) then yes, this is accurate, theoretically. There is a limit to the resolution of the number imposed by the limits of the real number type.
 10/25/2006 04:18:45 PM · #8
well...as time has passed...I now sit at 154 votes and on the 154th it changed to x.9934.
 10/25/2006 04:38:54 PM · #9
Originally posted by Alienyst:
well...as time has passed...I now sit at 154 votes and on the 154th it changed to x.9934.


Moving up!!!!
 10/25/2006 04:46:37 PM · #10
nah...the 155th put me at x.9893 7 votes to movee up .0001 and only one vote to move down .0041

Message edited by author 2006-10-25 16:47:46.
 10/25/2006 05:23:55 PM · #11
Originally posted by Alienyst:
nah...the 155th put me at x.9893 7 votes to movee up .0001 and only one vote to move down .0041

Lets assume you are sitting at 5.9893 and you currently have 155 votes. You can figure it out like this:

155 x 5.9893 = 928.3415
So the next time you receive a vote put in your # of votes and score:
156 x 5.9894 = 934.3464
934.3464 - 928.3415 = 6.0049 (you received a vote of 6)

So you see a 6 vote would only move you up .0001
A 5 vote would leave you the same because of the round up/down.
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