stochastic calculations inside emcee
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Description
Hi,
I have a model for which I am using emcee to sample three parameters.
I have trouble getting good acceptance ratio. I have increased the number of walkers to 2000 and still have the same problem. Funny enough, the first few samples, i.e., first 100 or so, have acceptance ratio around 25-30 % but then it drops to 0.01%. I am initializing the walkers with random values.
Is there any diagnostic or something else one can do to improve the sampling?
thanks in advance
Inti
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Research direction
No source file, test, or entry point is named; start by reviewing the model and sampler configuration described in the issue, including walker initialization and acceptance-ratio behavior. A contribution cannot be marked done from this report alone because it does not specify a code change, diagnostic, or expected result.
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Assessment
- Tech stack
- python
- Domain
- data
- Issue type
- Bug
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100