F-Score Formula

Equation for calculate f-score is,

$$F_{\beta }=\frac{(1+{\beta }^2)·\mathrm{T_P}}{(1+{\beta }^2)·\mathrm{T_P}+{\beta }^2·\mathrm{F_N}+\mathrm{F_P}}$$

where,
β = Shape parameter
T_P = Number of true Positives
F_N = Number of false negatives
F_P = Number of false positive
F_β = F1 score