Message boards :
Number crunching :
Granted Credits are not correct calculated!
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Author | Message |
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Honie Send message Joined: 22 Jan 04 Posts: 141 Credit: 29,681,066 RAC: 0 |
Thank you, Ingleside & Benher, for giving this explanation. Now I understand it. |
Keck_Komputers Send message Joined: 4 Jul 99 Posts: 1575 Credit: 4,152,111 RAC: 1 |
> Ingleside is correct, > > Code for granting hasn't changed recently. > > Has allways been: > A. remove highest claimed > B. remove lowest > C. add up remainder of claims (however many that may be). > D. Divide by count of claims in C (average). > > Seti had allways been 3 results per WU, so 3-high-low = 1, and average of > middle score = middle/1 . > > Backlog caused a few of the 4 result WUs to all be returned and be in database > before validation...and for those, it was average of middle two. > > This is from looking at the server source code. > This is correct with one addendum. If the quorum is 2 or less grant the lowest claim of valid results. [edit] Missed that ingleside had already pointed this out. Please ingnore this redundant post. BOINC WIKI BOINCing since 2002/12/8 |
mikey Send message Joined: 17 Dec 99 Posts: 4215 Credit: 3,474,603 RAC: 0 |
> Thank you, > > Ingleside & Benher, > > for giving this explanation. > Now I understand it. > Me too, seems I was wrong on the "no formulas". |
John McLeod VII Send message Joined: 15 Jul 99 Posts: 24806 Credit: 790,712 RAC: 0 |
> > > NO formula, NO division is done with the credits! Straight numbers > here, > > 3 > > > results, all within statistical limits, the middle number is what > > everyone > > > gets! > > > Computer A requests 34.75, Computer B 35.98, Computer C 43.22, ALL > users > > are > > > granted 35.98 credits! > > > > > But then how is this one figured if no divisions are done? > > http://setiweb.ssl.berkeley.edu/workunit.php?wuid=7401955 > > > > 24.17 > > 28.51 > > 26.49 > > 28.77 > > > > granted = 27.50 > > > > That looks a lot like (28.51 + 26.49)/2 > > > > > I agree, it does look like the average of the top/bottom of the first 3 > results > It's the first result I've seen like this, I'd love an explanation from one of > the SETI crew > Easy. All 4 came beck before the validator got a crack at it. Therefore the middle two were averaged. BOINC WIKI |
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