Blank tabs in multi-species model

[amdurso]

This has happened to me on 2 separate computers, in both PRESENCE 2.4 and 3.1, even following reinstall. When I initiate the 'Setup Numerical Estimation Run' for a multi-species model, 4 of the 6 tabs are blank (those which should read (Detection B), (Detection A*), (Detection B*) and (Detection A* B*)), contrary to how they appear in Chapter 14 of the book. Anyone else encountered this problem? Any advice on how to fix it?



Thanks

AMD

[jhines]

Hi Andrew,

Originally, I think I had those parameters (pA,pB,rA,rBA,rBa) in different tabs, but later realized that this prevented the possibility of constraining them to be equal to each other, or share common intercept/slope parameters. So, I moved all detection parameters to the detection tab and the other 4 tabs are not needed. Sorry for the confusion.

Jim

[amdurso]

Thanks Jim. For further clarification, the final output parameter (at the bottom of the output file), called 'delta', is equivalent to the species overlap, where delta=1 is no difference from expected, <1 is less overlap than expected and >1 is more than expected? I ask because this same parameter is variously called gamma and lambda in other sources, including in the PRESENCE book.

[jhines]

The 'delta' parameter is the one defined on pg. 236 of the book: "delta is the SIF for detection probabilities...values less than 1 suggest it is less likely to detect both species in a survey than if the species were detected independently, while values greater than 1 suggest that it is more likely to detect both species."

Jim