A question about RAC

somebodley
somebodley
Joined: 3 Mar 06
Posts: 119
Credit: 180,339
RAC: 0

Ray was quite right ... My

Ray was quite right ...
My RAC has now jumped right forward to 1,225
It has done so as other WU's in my "Pending" file have been validated and the 'time element' taken into consideration.
I am happy ...
:-)))

[B@H] Ray
[B@H] Ray
Joined: 4 Jun 05
Posts: 621
Credit: 49,583
RAC: 0

RE: Ray was quite right

Message 38835 in response to message 38834

Quote:
Ray was quite right ...
My RAC has now jumped right forward to 1,225
It has done so as other WU's in my "Pending" file have been validated and the 'time element' taken into consideration.
I am happy ...
:-)))


That was like having RAC put away in the bank. At least you did not have to wait 3 Mo. as with SETI Beta to get the interest on them.


Try the Pizza@Home project, good crunching.

Aurum
Aurum
Joined: 12 Jul 17
Posts: 77
Credit: 3,408,757,040
RAC: 404

How many days are used in the

How many days are used in the RAC calculation???

archae86
archae86
Joined: 6 Dec 05
Posts: 3,146
Credit: 7,101,814,931
RAC: 956,434

Aurum wrote:How many days are

Aurum wrote:
How many days are used in the RAC calculation???

Infinite.  In other words, all of them since the beginning.  But the older values count less and less.

RAC is fundamentally an exponentially weighted forgetting function.  It only needs to preserve two values from the last calculation in order to be able to calculate the new RAC when there is a new input.  The two saved values are just a time stamp and the RAC at that time.

It is a close cousin of an exponentially weighted moving average, which was well regarded for many process monitoring purposes by the professional statisticians back when I worked for Ye Olde Microprocessor Werkes.

mikey
mikey
Joined: 22 Jan 05
Posts: 12,099
Credit: 1,834,325,298
RAC: 10,587

Aurum wrote:How many days are

Aurum wrote:
How many days are used in the RAC calculation???

According to a post from 2015:

[url]https://einsteinathome.org/content/how-do-we-calculate-rac-dummies#comment-133367[/url]

From the Boinc Wiki:

[url]https://en.wikipedia.org/wiki/BOINC_Credit_System[/url]

 

 

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