Table 1 Parameters and variables symbols and expressions for SEIR-HDVQ.

From: Automatic face detection based on bidirectional recurrent neural network optimized by improved Ebola optimization search algorithm

Symbols

Data kind

Expressions

\(\:E\)

Vector

Exposed candidates

\(\:S\)

Susceptible candidates

\(\:H\)

Hospitalized infected candidates

\(\:I\)

Infected candidates

\(\:D\)

Infected from infection candidates

\(\:R\)

Recovered infected candidates

\(\:PE\)

Capable candidates for infecting candidates

\(\:V\)

Vaccinated infected candidates

\(\:\pi\:\)

Scalar

Rate of recruitment of susceptible candidates

\(\:\alpha\:\)

Hospitalization proportion of infected candidates

\(\:\eta\:\)

Proportion of Ebola virus decay (environmentally)

\(\:{\Gamma\:}\)

Illness-induced mortality rate of human candidates

\(\:{\beta\:}_{1}\)

Contact proportion of diseased human candidates

\(\:{\beta\:}_{2}\)

Contact proportion of pathogen candidates/environment

\(\:{\beta\:}_{3}\)

Contact proportion of dead human candidates

\(\:{\beta\:}_{4}\)

Contact proportion of recovered human candidates

\(\:\tau\:\)

Natural death proportion of human candidates

\(\:\gamma\:\)

Recovery proportion of human candidates

\(\:\vartheta\:\)

Vaccination proportion of individuals

\(\:\delta\:\)

Burial rate of diseased human candidates

\(\:\mu\:\)

Rater of esponse to vaccination

\(\:\varpi\:\)

Response proportion to hospital cure

\(\:\xi\:\)

Quarantine proportion of infected individuals