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changhoonhahn / gqp_mc

GQP mock challenge
MIT License
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diagnose iSpeculator #48

Closed changhoonhahn closed 4 years ago

changhoonhahn commented 4 years ago

There are currently discrepancies between the true galaxy properties and properties inferred from iSpeculator. image The above comparison is for the first 10 LGal galaxies.

This discrepancy can be caused by the following:

We need to diagnose the cause of this discrepancy.

changhoonhahn commented 4 years ago

The discrepancy in SFRs may also be due to priors on SFR (or SFH) set by the Dirichlet priors. See notebook for how the warped manifold transform used to sample the Dirichlet priors.

changhoonhahn commented 4 years ago

In this notebook I compared the observed photometry and spectroscopy to model(median of posterior) and find good agreement. This suggests that the discrepancy is likely not due to a bug or MCMC convergence issue (this still needs more testing).

kgb0255 commented 4 years ago

I was able to reproduce the same results in the both notebooks on NERSC with my emulator data

changhoonhahn commented 4 years ago

@kgb0255 which results are you referring to?

kgb0255 commented 4 years ago

@changhoonhahn Sorry for lack of clarity. I sshed to NERSC to access my data and was able to reproduce the same output in both notebooks you linked above - sfh_basis_transform, diagnose_ispeculator.ipynb.

changhoonhahn commented 4 years ago

Closing this issue since this falls under #52