software-store-developers team mailing list archive

[Matthew Paul Thomas <mpt@xxxxxxxxxxxxx>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Matthew Paul Thomas wrote on 24/06/11 16:17:
>...
> So it seems to me that one test case for our final formula should be
> that if something has no ratings at all, *or* if it has only 3-star
> ratings, its ELR should be 3.00. This means it's not really an
> "Expected Lowest Rating" (ELR), but more like a "Dampened Rating"
> (DR), modelling the pattern that the average rating usually dampens
> towards 3.00 as more ratings come in.
> 
> So I tweaked your Python code to subtract 3 from each star rating before
> multiplying it by the corresponding Wilson score, and then to add 3 to
> the final result.
>...

I've now updated the "Top Rated" specification to reflect this, and
added a sketch. <https://wiki.ubuntu.com/SoftwareCenter#top-rated>

- -- 
mpt
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAk4VqGUACgkQ6PUxNfU6ecoGGwCggrkCo4f2Q6n0yYSXyveinRp1
wVsAn3EQagYOShH3A4MAb3d1GqBecgOt
=+Kyg
-----END PGP SIGNATURE-----