Seed option in started,ss

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Marta Cousido, modified 4 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 4 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 4 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