[HN Gopher] A Bayesian View of Amazon Resellers
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       A Bayesian View of Amazon Resellers
        
       Author : DantesKite
       Score  : 56 points
       Date   : 2023-06-20 19:30 UTC (3 hours ago)
        
 (HTM) web link (www.johndcook.com)
 (TXT) w3m dump (www.johndcook.com)
        
       | dataflow wrote:
       | See also https://www.evanmiller.org/how-not-to-sort-by-average-
       | rating...
        
       | akamoonknight wrote:
       | Is there an adaptation of Bayesian statistics that also takes
       | into account timeliness of the data ? e.g. a more recent string
       | of negative reviews would potentially indicate something compared
       | to a more smooth distribution
        
         | jeffreyrogers wrote:
         | I think you would change the prior in that situation under the
         | assumption that it indicates some sort of underlying shift. I'm
         | not sure that there is any theory guiding how you do that
         | though.
        
       | OscarCunningham wrote:
       | (2011) The old days when Amazon reviews carried information.
        
         | jldugger wrote:
         | Yea, things get a bit more dire if you build an adversarial
         | model where resellers are allowed to declare reputation
         | bankruptcy.
        
       | great_psy wrote:
       | A lot of words to describe bayes rule
        
         | ted_bunny wrote:
         | Am I the only one who finds it intuitive and simple? Every
         | article seems to give it a whole chapter of explanation, and
         | vaunt it as the most groundbreaking concept ever. First I
         | thought that was just Rationalists sniffing their farts, but I
         | see it in a lot of places.
        
         | DarkNova6 wrote:
         | This and nothing else
        
         | mathgeek wrote:
         | Essentially this. There are many more variables involved in
         | that specific example, such as time since last negative
         | feedback, total age of account, feedback over the last 90 days,
         | etc.
        
         | DaiPlusPlus wrote:
         | Sometimes that's necessary - a lot of Bayesian- _stuff_ is very
         | counter-intuitive.
        
       | frakt0x90 wrote:
       | If anyone wants to get more into Bayesian stats, I will always
       | recommend Statistical Rethinking by Richard McElreath. Maybe my
       | all time favorite text book. He has an accompanying youtube
       | lecture series as well.
        
         | 0cf8612b2e1e wrote:
         | I thought the book was so-so, but I find his lectures
         | excellent. His second "season" of lectures has some amazing
         | visualizations.
        
           | dlivingston wrote:
           | I've never seen a "theatrical trailer" for a lecture series
           | before: https://youtu.be/BYUykHScxj8
        
       | dwighttk wrote:
       | hmm... I might start discounting sellers with too many reviews.
       | Not sure where the cutoff would be and some sellers might
       | actually be high volume and get lots of reviews, but a huge
       | number of reviews makes me think they are fake.
        
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