Seed option in started,ss

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Marta Cousido, modified 11 Months ago.

Seed option in started,ss

Youngling Posts: 8 Join Date: 3/4/24 Recent Posts

Dear SS Experts,

I am working with a hake sex-separated SS model. During a jitter analysis I observed the following behaviour. When setting the seed in the starter file and using the "Initial Parameter Values=0" option, the seed seems to work correctly as I ran three models with the same seed and all three gave identical estimates.However, when I switch to "Initial Parameter Values=1" and set the seed in the starter file, the seed does not seem to work consistently. I ran three models with the same seed, but each gave different results. Is there any explanation for this behaviour?

Thank you for your help.

Richard Methot, modified 11 Months ago.

RE: Seed option in started,ss

Youngling Posts: 222 Join Date: 11/24/14 Recent Posts

Hi Marta,

I looked at the code and did not see an obvious reason for there to be an interaction like you are seeing. So, I will need to set up a local test case to investigate further.

If I find something that needs to be changed, there will be a github issue created here: https://github.com/nmfs-ost/ss3-source-code

Also, most of our public discussions have moved to this google forum which many users find more convenient: https://groups.google.com/g/ss3-forum

Rick

Marta Cousido, modified 11 Months ago.

RE: Seed option in started,ss

Youngling Posts: 8 Join Date: 3/4/24 Recent Posts

Hi Rick,

Thanks for looking into this. If it would be helpful, I can also share the results of my tests - just let me know and I'll be happy to provide whatever is needed.

Kind regards,
Marta