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Gammapy Modeling

  • Christoph Deil
  • Nov 18, 2019
  • Gammapy coding sprint in Granda

Overview

High priority work (2019)

Things we should try to do for v0.15. I put an estimate of how long it could take. (about as reliable as astronomical distance estimates)

  • Write documentation (docs/modeling/index.rst, tutorials/models.ipynb, tutorials/modeling.ipynb)
  • Implement PIG 14 - clean up spectral model evaluation, error propagation (2 days)
  • Polish model registry and factory (GH 2387) (1 day)
  • Clean up model names (GH 2353) (lon_0 -> lon, reference -> energy_ref, lambda_ -> alpha, ...) Needs proposal and decision. Do next week? (1-2 days)
  • API to interact with parameter errors (GH 1398) (1 day)
  • Improve MCMC sampling code GH 2304

Would like to have for v1.0, but probably not a blocker?

  • Improve model evaluate and __call__ API (GH 2443) (needs design proposal, ~ 1 week, defer to 2020?)
  • Add optional SkyModel.temporal_model (2 hours) and make evaluate work properly (1-2 days)
  • Make SkyDiffuseCube a SpatialModel subclass?
  • Remove parameter scaling? (GH 2434) (1-2 days)
  • LogGaussianSpectralModel mean position (GH 2436) (3 hours)

Low priority work (2020)

  • Dedicated effort on Gammapy modeling 2.0? Hire Tom?
  • Goal: 10x to 1000x faster, depending on model and machine

Discussion

  • Issues, solutions, tasks, priorities, contributors?