Author: SUPRIYA MONDAL; Sabyasachi Ghosh
Title: Possibilities of exponential or Sigmoid growth of Covid19 data in different states of India Document date: 2020_4_14
ID: bz13hdvz_12
Snippet: The copyright holder has placed this preprint (which was not . https://doi.org/10.1101/2020.04.10.20060442 doi: medRxiv preprint which shows that number of new cases (dS) has two parts -one is proportionally growing with total cases (i.e. ∠S) and another is decaying with ∠S 2 /N max . In small values of t, Eqs. (5), (4) will convert to Eqs. (1), (2) . It means that Sigmoid function will behave as exponential function in low t range but at h.....
Document: The copyright holder has placed this preprint (which was not . https://doi.org/10.1101/2020.04.10.20060442 doi: medRxiv preprint which shows that number of new cases (dS) has two parts -one is proportionally growing with total cases (i.e. ∠S) and another is decaying with ∠S 2 /N max . In small values of t, Eqs. (5), (4) will convert to Eqs. (1), (2) . It means that Sigmoid function will behave as exponential function in low t range but at high t, it will saturate to a maximum values (N max ). On the other hand, its derivative or slope (no of new cases) first increase, then decrease after showing a peak. By taking a guess value of N max = 10 4 and 10 5 , we have drawn different possible Sigmoid functions and their derivative (new cases) for different states, which are addressed in next section.
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