Message Boards Message Boards

GROUPS:
Staff Picks Biological Sciences Medical Sciences Operations Research Social Science Dynamic Interactivity Equation Solving Interface Construction Modeling
Anton Antonov

[NB] Basic experiments workflow for simple epidemiological models

Anton Antonov, Accendo Data LLC
Posted 3 years ago
14997 Views
|
10 Replies
|
12 Total Likes
|

MODERATOR NOTE: coronavirus resources & updates: https://wolfr.am/coronavirus
POSTED BY: Anton Antonov
10 Replies
Sort By:

Very nice!

Our models are very similar, right down to some of the assumptions! I see that your fits suffer from the same problems as mine: a long exponential tail on the confirmed cases (aka, infected) and the recovered rises too slowly.

Bob
POSTED BY: Robert Nachbar

Thank you for your comment, Bob!

The purpose of that notebook is to show the general workflow with a simple model. There are multiple ways to make the SEI2R model more comprehensive. The directions I have in mind can be found in the repository Coronavirus propagation dynamics.
POSTED BY: Anton Antonov

My work is posted now: [Notebook] Epidemiological Models for Influenza and COVID-19

I'll get a a look at your repo later today.
POSTED BY: Robert Nachbar

One possible issue is from an oversimplification. In actuality the beta parameters are going to be functions of time and space. To some extent quarantining can account for this, at least the temporal aspect, if you can model it by some plausible kinetics.

Another issue is in the data itself. There are believed to be many mild cases. For these, recovery=infected (up to a time lag) and if both go unreported, this will have the effect of making recovery seem slower than it actually is.

That stated, both posts are really nice.
POSTED BY: Daniel Lichtblau

Thanks, Dan!

Probably refined models can be made that have more population compartments and have time-dependent rates that reflect the medical observations and enacted policies.
POSTED BY: Anton Antonov

enter image description here -- you have earned Featured Contributor Badge enter image description here

Your exceptional post has been selected for our editorial column Staff Picks http://wolfr.am/StaffPicks and Your Profile is now distinguished by a Featured Contributor Badge and is displayed on the Featured Contributor Board. Thank you, keep it coming, and consider contributing to the The Notebook Archive!
POSTED BY: Moderation Team

Nice live-stream today!
POSTED BY: Robert Nachbar

Many thanks for the effort you put into this. I also much enjoy your website and learn a lot from it.

Regards, Robert
POSTED BY: Robert Nathaniel

Thank your kind words! I put a fix into the notebook -- I forgot to run it with the most recent package updates.
POSTED BY: Anton Antonov

The notebook here is also (without output) placed in GitHub: https://github.com/antononcube/SystemModeling/blob/master/Projects/Coronavirus-propagation-dynamics/WL-notebooks/Basic-experiments-workflow-for-simple-epidemiological-models.nb .
POSTED BY: Anton Antonov
Reply to this discussion
Community posts can be styled and formatted using the Markdown syntax.
Tag limit exceeded
Note: Only the first five people you tag will receive an email notification; the other tagged names will appear as links to their profiles.
Reply Preview
Attachments
Remove
or Discard

Group Abstract Group Abstract