IMDb Weighted rating calculator

IMDb Weighted rating calculation

How do you calculate the rank of movies and TV shows on the Top Rated Movies and Top Rated TV Show lists? 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

IMDb Datasets

files: https://datasets.imdbws.com/
description: https://www.imdb.com/interfaces/

run included update.sh (linux only)

or download and unzip:

• title.ratings.tsv.gz to ratings.tsv
• title.basics.tsv.gz to titles.tsv

Run

npm run create

Creates required json files (required only once on each dataset update). Expect high memory usage.

npm start N

To actually calculate top N. Result will be saved to the top_N.tsv file.