name: cosmosis-parameter-estimator description: CosmoSIS cosmological parameter estimation skill for MCMC sampling and likelihood analysis allowed-tools:
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- Grep metadata: specialization: physics domain: science category: cosmology phase: 6
CosmoSIS Parameter Estimator
Purpose
Provides expert guidance on CosmoSIS for cosmological parameter estimation, including modular likelihood construction and MCMC sampling.
Capabilities
- Modular likelihood construction
- Multiple sampler support (emcee, multinest, polychord)
- Prior specification
- Chain analysis and diagnostics
- Plotting and visualization
- Pipeline construction
Usage Guidelines
- Pipeline Setup: Configure modular analysis pipeline
- Likelihoods: Build likelihood functions from data
- Priors: Specify parameter priors
- Sampling: Run MCMC with appropriate sampler
- Analysis: Analyze chains and compute posteriors
Tools/Libraries
- CosmoSIS
- emcee
- GetDist