Silk Road forums

Support => Technical support => Topic started by: Black Tuna Gang on May 25, 2012, 11:28 pm

Title: Feedback Rating
Post by: Black Tuna Gang on May 25, 2012, 11:28 pm
How is the figure next to your vendor name worked out? Obviously it's a percentage of some sort but we had a few transactions completed before our number came up and we've seen other vendors with more transactions than we have but still no number.

Just interested really. :)
Title: Re: Feedback Rating
Post by: Black Tuna Gang on May 26, 2012, 08:11 am
Nobody got a clue about this? :(
Title: Re: Feedback Rating
Post by: Japan1980 on May 26, 2012, 08:25 am
Not sure - but you fully deserve the 100 you've got.

Another question is (related to you) how come the finalise option doesn't appear as quickly as it does with other vendors? As you know I've ordered off you again but I'm still waiting to be able to finalise the first deal!

Anyway enjoy the sun bro  8)

Title: Re: Feedback Rating
Post by: Black Tuna Gang on May 26, 2012, 10:40 am
You can only finalise after 3 days with new vendors. It has been put in place to stop FE and therefore scammers. I don't think it has been properly communicated to the majority of the people on SR though.
Title: Re: Feedback Rating
Post by: diskoking23 on May 26, 2012, 10:53 am
I think it takes a few transactions before you get a rating... My guess its over 10, then the % is worked out from then on!
Title: Re: Feedback Rating
Post by: CoinBox on May 27, 2012, 02:40 am
http://dkn255hz262ypmii.onion/wiki/index.php/Feedback_Score

Quote from: SR Wiki
The Formula

The buyer activity weight is determined by finding the average and standard deviation of the log of the number of vendors reviewed by buyers who've ever left a review. If the log of the number of vendors reviewed by the buyer who left the feedback is greater than the average, the review has a "buyer activity" weight of the number of standard deviations above the average plus one. If it is below average, then the weight is the inverse of the number of standard deviations below the average minus one.

The age weight is found by raising 1.02337 to the power of the review's age in days and then inverting it. We got 1.02337 by making a review half as valuable after one month as one that's just been posted.

The price weight comes from the following formula: 0.2*log(0.02*($price)+1)+1 where $price is in dollars.

You then multiply the weights together to get the total weight for that review. Add up all of the weighted reviews and divide by the total weight to get the weighted average, then do 25*(1-avg) to get "percent positive reviews" metric.

To get the seller rank, we find the averages and standard deviations of the "percent positive feedback" and the log of the total weight of the reviews for all active sellers. We then average the number of standard deviations a seller has above or below the average with a 4 to 1 weight on their average feedback over their total weight. This is a seller's rating, and we rank everyone according to this rating.

There are a few little details left out for brevity, but that's basically it.
Title: Re: Feedback Rating
Post by: Black Tuna Gang on May 27, 2012, 08:15 am
Nice one Coinbox. :)

Quite literally the most complicated rating system i have ever heard of. lol.

I will just take the score and be happy.

:D