Phi_inv: Inverse function of the Cumulative distribution function...
In BayesianFROC: FROC Analysis by Bayesian Approaches

The author is confused stats::qnorm() with stats::pnorm() and thus he made this.

1	Phi_inv(x)

`x`	A real. To be passed to the function `stats::qnorm()`

In Stan file, it is inv_Phi() and not inv_phi.

Since Φ(x) is monotonic, it follows that \frac{d}{dx}Φ^{-1} = (\frac{d}{dx}Φ)^{-1} >0, and thus Φ^{-1}(x) is also monotonic.

A real number: Φ^{-1}(x)

         x <- runif(100)

 Phi_inv(x) == stats::qnorm(x)

 inv_Phi(x) == stats::qnorm(x)

BayesianFROC documentation built on Jan. 23, 2022, 9:06 a.m.

BayesianFROC index

README.md Reference FROC Models"

Note that we can't provide technical support on individual packages. You should contact the package authors for that.

Description