# A basket of baselines

**URL:** <https://community.epinowcast.org/t/a-basket-of-baselines/325>\
**Category:** Project Proposals\
**Created:** [5 August 2025 21:28 UTC](https://community.epinowcast.org/t/a-basket-of-baselines/325 "2025-08-05T21:28:10Z")\
**Posts on this page:** 1\
**Showing post:** 15

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**Author:** ![kath-sherratt](https://dub1.discourse-cdn.com/flex005/user_avatar/community.epinowcast.org/kath-sherratt/32/165_2.png) [@kath-sherratt](https://community.epinowcast.org/u/kath-sherratt)\
**Post date:** [26 January 2026 18:38 UTC](https://community.epinowcast.org/t/a-basket-of-baselines/325/15 "2026-01-26T18:38:06Z")

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I’ve been thinking about this too. I think there’s still room for both the top-down and bottom-up approaches to suggesting baselines.

(Top-down: evaluating across existing models’ error, considering predictability/other factors (with due respect to the chat over in the [that thread](https://community.epinowcast.org/t/do-your-evaluations-have-enough-power/366/8)), and breaking down the variance into identifiable components (eg with PCA). Or bottom up: doing the rounds of expert elicitation from different modelling families, identifying some minimum standards (sufficient conditions) for a “valid” model from each, and building with that.)

Idealistically, these two approaches would kinda meet in the middle in a model confidence set…

> I guess the following question would then be for what.

Definitely agree. Perhaps that is a good motivation for why we need a basket. Maybe links back to your post (since I just came across it again) [Asking your mum if your idea is good](https://community.epinowcast.org/t/asking-your-mum-if-your-idea-is-good/337)

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