The Movie Database Support

 Ongoing Maintenance

Dear TMDb Community,

In the next few months, you might notice some changes on our site. My primary goal is, and always has been, to build the best media database on the internet and in order for me to stay true to that goal, we will be making these changes to enable TMDb to be more robust and reliable than before.

As you might recall from my 2019 recap, I have some pretty amazing plans for 2020 so stay tuned for some really fantastic launches this year!

If you have any questions please contact us at support@themoviedb.org.

Sincerely,

Travis

Get we see how many ratings a films score is based on? That would be kind of useful.

25 replies (on page 2 of 2)

Jump to last post

Previous page

@pt100 said:

For those who don't know either javascript or SQL, can you post the link you found that, I assume, is for a straight algebraic formula? If it changes a linear scale to a logarithmic scale, I assume it does not alter the original ranking itself. If so, then maybe Travis could eventually implement it. But I think the easiest thing is to have a minimum number of votes as a floor to allowing the movie into the calculation, as IMDb does.

FYI, here's how IMDb provides ratings for the top 250 films:

The following formula is used to calculate the Top Rated 250 titles. This formula provides a true 'Bayesian estimate', which takes into account the number of votes each title has received, minimum votes required to be on the list, and the mean vote for all titles:

weighted rating (WR) = (v ÷ (v+m)) × R + (m ÷ (v+m)) × C

Where:
R = average for the movie (mean) = (rating)
v = number of votes for the movie = (votes)
m = minimum votes required to be listed in the Top Rated list (currently 25,000)
C = the mean vote across the whole report

Things can get awfully mathematically complicated. That's why I suggested a floor for number of votes before a title can be included in the ranking, and then a simple ranking of ratings (where there will likely be many ties).

I did not understand the essence of your formula it is to determine the top of the movie in a certain list

and how to deal with movies whose voices are less than the limit how to compare them

I think in this case it is better to avoid constant values.

val = max votes1/10

(logvalvotes + rating) / 2

@bagdaulet said:

I did not understand the essence of your formula it is to determine the top of the movie in a certain list

and how to deal with movies whose voices are less than the limit how to compare them

I think in this case it is better to avoid constant values.

val = max votes1/10

(logvalvotes + rating) / 2

As I said, the math gets sort of complicated. I'm not sure I understand your formulas either. As I asked before, can you provide a link to the page where you got your formula(s)?

@pt100 said:

@bagdaulet said:

I did not understand the essence of your formula it is to determine the top of the movie in a certain list

and how to deal with movies whose voices are less than the limit how to compare them

I think in this case it is better to avoid constant values.

val = max votes1/10

(logvalvotes + rating) / 2

As I said, the math gets sort of complicated. I'm not sure I understand your formulas either. As I asked before, can you provide a link to the page where you got your formula(s)?

https://habr.com/ru/post/172065/

I still think the simple solution works best: have a minimum number of votes (either fixed or allowing user adjustment as desired) as a threshold for inclusion in the algorithm; and then use original average rating in the algorithm, without weighting in any way by number of votes.

Has this ever been tackled, I mean regarding the display of number of voters? It's harming the credibility of TMDB, in my opinion. For example on IMDB you instantly see whether a movie was rated by 200 or 200'000, and that says a lot about the value of the score. I would prefer to see the honest and transparent count on TMDB, even if the figures are lower than IMDB.

Give v5 a spin, and click the user rating. thumbsup_tone2

Nice! Love the distribution and history charts at a glance! Hope this gets released soon :)

Main job left is the new homepage, which I'll be working on this week. Then I'm really close. Need another ~1-2 weeks.

It's terrific seeing the 1-10 ratings breakdown now showing (upon clicking on a movie's or show's current average % rating), Travis! thumbsup_tone1

@genplant29 said:

It's terrific seeing the 1-10 ratings breakdown now showing (upon clicking on a movie's or show's current average % rating), Travis! thumbsup_tone1

I really appreciate that the information is only shown if you actually click the rating. :)

Can't find a movie or TV show? Login to create it.

Global

s focus the search bar
p open profile menu
esc close an open window
? open keyboard shortcut window

On media pages

b go back (or to parent when applicable)
e go to edit page

On TV season pages

(right arrow) go to next season
(left arrow) go to previous season

On TV episode pages

(right arrow) go to next episode
(left arrow) go to previous episode

On all image pages

a open add image window

On all edit pages

t open translation selector
ctrl+ s submit form

On discussion pages

n create new discussion
w toggle watching status
p toggle public/private
c toggle close/open
a open activity
r reply to discussion
l go to last reply
ctrl+ enter submit your message
(right arrow) next page
(left arrow) previous page