Skip to content

Conversation

@niklasf
Copy link
Member

@niklasf niklasf commented Nov 9, 2024

Ideally, new players would score 0.5 on their first game, but it looks
like we pair them too high:

Time control Avg score Elo
Ultra bullet 0.25 -96
Bullet 0.25 -96
Blitz 0.34 -59
Rapid 0.37 -47
Classical 0.37 -47
Correspondence 0.39 -40

Changing the initial rating would change the rating distribution over
time, requiring to lower the rating again and so on.

Instead, use a virtual rating for the first pairing, just like we
already use virtual offsets from a normal distribution.

Ideally, new players would score 0.5 on their first game, but it looks
like we pair them too high:

| Time control   | Avg score | Elo |
| ---------------| --------- | --- |
| Ultra bullet   | 0.25      | -96 |
| Bullet         | 0.25      | -96 |
| Blitz          | 0.34      | -59 |
| Rapid          | 0.37      | -47 |
| Classical      | 0.37      | -47 |
| Correspondence | 0.39      | -40 |

Changing the initial rating would change the rating distribution over
time, requiring to lower the rating again and so on.

Instead, use a virtual rating for the first pairing, just like we
already use virtual offsets from a normal distribution.
@niklasf niklasf force-pushed the virtual-first-game-rating branch from 9677d30 to 0a26cc6 Compare November 9, 2024 15:45
@niklasf niklasf changed the title use lower virtual rating for first pool seek use lower virtual rating for first game pairing Nov 9, 2024
@ornicar ornicar merged commit 6861b03 into master Nov 9, 2024
7 checks passed
@niklasf niklasf deleted the virtual-first-game-rating branch November 10, 2024 10:43
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

None yet

Projects

None yet

Development

Successfully merging this pull request may close these issues.

3 participants