Log CDFs for the ode function

Helper function to compute the log CDF for the delay distribution. More...

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Functions
int	dist_has_positive_support (data int dist_id)

Description

Helper function to compute the log CDF for the delay distribution.

Function Documentation

dist_has_positive_support()

int dist_has_positive_support

(

data int

dist_id

)

Compute the log CDF of the delay distribution

Parameters

delay	Time delay
params	Distribution parameters
dist_id	Distribution identifier matching pcd_distributions in R: 1: Lognormal, 2: Gamma, 3: Weibull, 4: Exponential, 9: Beta, 12: Cauchy, 13: Chi-square, 15: Gumbel, 16: Inverse Gamma, 17: Logistic, 18: Normal, 19: Inverse Chi-square, 20: Double Exponential, 21: Pareto, 22: Scaled Inverse Chi-square, 23: Student's t, 24: Uniform, 25: von Mises

Returns

Log CDF of the delay distribution

// Example: Lognormal distribution
real delay = 5.0;
array[2] real params = {0.0, 1.0}; // mean and standard deviation on log scale
int dist_id = 1; // Lognormal
real log_cdf = dist_lcdf(delay, params, dist_id);

Test whether a delay distribution has support only on the non-negative reals

Used internally to decide whether to short-circuit dist_lcdf at delay <= 0 and whether the ODE / nested CDF calls need to integrate over negative arguments. Returns 1 for distributions with strictly non-negative support, 0 otherwise. IDs match pcd_distributions$stan_id in R.

Parameters

dist_id

Distribution identifier

Returns

1 if the delay distribution has non-negative support, 0 otherwise.

Definition at line 38 of file primarycensored_ode.stan.

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