The main dataset was taken from: https://sites.google.com/view/snuaric/data/covid-19-data/covid-19-data?authuser=0.
-'My_covid_research'---> intended for South Korea case
-'My_covid_research2'---> intended for Germany case
Please consider citing as: "Khan, J.I., Ullah, F. and Lee, S., 2022. Attention based parameter estimation and states forecasting of COVID-19 pandemic using modified SIQRD Model. Chaos, Solitons & Fractals, p.112818."