Covid-19 Modelling

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For Singapore as of 2020-07-19, the best fit SEIR model is shown as:

Optimized SEIR model for the current corona virus evolution for Singapore

Associated operational parameters:

\(S_0\) = 4.629701e+04 cases;

\(\beta\) = 4.752946e-06 (cases days)\(^{-1}\);

\(\sigma\) = 8.282869e-02 days\(^{-1}\);

\(\gamma\) = 3.590689e-02 days\(^{-1}\).

These translate into the more familiar parameters:

R = 6.128273;

T\(_{inc}\) = 12.073111 days;

T\(_{inf}\) = 27.849808 days.

The additional initial values were:

\(E_0\) = 7.20e+01, \(I_0\) = 5.40e+01, \(R_0\) = 1.80e+01.

As a measure of quality of the convergence of the annealing algorithm, the final error measure was:

\(\epsilon\) = 4.013868e+03 cases; with a relative error, \(\epsilon/S_0\) = 8.67e-02 or 8.7%

Leslie J. Mulder
401 - 2071 Kingsway Ave,
Port Coquitlam, B.C,
Canada V3C 6N2

Copyright © 2020 Leslie J. Mulder