Table 2 Overall data structure for test period #1.

From: Forecasting the spread of COVID-19 based on policy, vaccination, and Omicron data

Country

Vaccination coefficient

Prediction model

yijl

DNK (l = 0)

Unused (\({b}_{j,1}=\cdot \cdot \cdot ={b}_{j,4}=0\))

ARIMA (\({a}_{i,1}=\cdot \cdot \cdot ={a}_{i,5}=0\))

y000

BiLSTM (\({a}_{i,1}=1\))

y100

GAM (\({a}_{i,2}=1\))

y200

lightGBM (\({a}_{i,3}=1\))

y300

SEIR (\({a}_{i,4}=1\))

y400

TSGLM (\({a}_{i,5}=1\))

y500

1st-vaccination (\({b}_{j,1}\) = 1)

ARIMA (\({a}_{i,1}=\cdot \cdot \cdot ={a}_{i,5}=0\))

y010

\(\cdot \cdot \cdot\)

\(\cdot \cdot \cdot\)

TSGLM (\({a}_{i,5}=1\))

y510

\(\cdot \cdot \cdot\)

\(\cdot \cdot \cdot\)

\(\cdot \cdot \cdot\)

1st, 2nd, 3rd vaccinations (\({b}_{j,4}\) = 1)

TSGLM (\({a}_{i,5}=1\))

y540

\(\cdot \cdot \cdot\)

\(\cdot \cdot \cdot\)

\(\cdot \cdot \cdot\)

\(\cdot \cdot \cdot\)

USA (l = 6)

1st, 2nd, 3rd vaccinations (\({b}_{j,4}\) = 1)

TSGLM (\({a}_{i,5}=1\))

y546