est_pk0 {eoa3}R Documentation

Fit pk searcher efficiency models

Description

Searcher efficiency is modeled as a function of the number of times a carcass has been missed in previous searches and any number of covariates.

Usage

est_pk0(pkdata, kFixed = NULL, n.iter = 1000, ...)

Arguments

pkdata

Search trial data entered in a list of N-vectors, $n and $y, indicating the number of carcasses available and the number discovered in searcher efficiency field trials in which carcasses were available for discovery. [NOTE: In earlier versions of eoa, the vectors were $M and $X. The names have been changed to avoid confusion with the M and X for total mortality and carcasses discovered carcass survey.]

kFixed

If trial carcassses are available for discovery for one search and data are insufficient for estimating k, a fixed, assumed value must be entered for k.

n.iter

number of iterations to use in updating the JAGS model for pp and kk

...

Other parameters that may be used in called functions (esp. burn for updating the JAGS function)

Details

The probability of finding a carcass that is present at the time of search is p on the first search after carcass arrival and is assumed to decrease by a factor of k each time the carcass is missed in searches.

Value

A list with an nsim x 2 matrix of simulated p and k values the joint posterior for SE.


[Package eoa3 version 1.0.0.1 Index]