Power spectrum responses for SSC #1134
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@RyoTerasawa can I check what the status of this PR is? |
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I am waiting for someone to review the code. I haven't asked for a specific person yet, but maybe I should ask a member of the MCPCov group to review it. I am happy to explain the details if needed. I am also working on writing the unit test and benchmark test to be included in this PR. |
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@RyoTerasawa @YueNan-c, maybe you want to also implement the DarkEmulator here: https://github.com/LSSTDESC/CCL/blob/master/pyccl/emulators/cosmicemu_pk.py. Are the unit tests and benchmark ready? |
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@RyoTerasawa @carlosggarcia can I check what the status of this is? |
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@carlosggarcia @damonge |
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Ok. I first round of comments. Some suggestions:
- Add unit tests per function/method declared to be sure they are doing what they should
- I would unify the
.npyfiles in a single.npzfile. Also, it seems that you are only using the z=0 case, I'd be great if you can compare all redshift, since you have it. - Add References to the equations in your paper for later reference (and to make my life easier when reviewing the PR)
- @damonge, there are integrals and biases computed that I think they might be obtained from the current CCL implementation. Can you have a look? The are in
pkresponse.py, where I pinged you, too.
In general, it looks good, though! Good work!
| def test_Pmm_resp(): | ||
| response = Pmm_resp(cosmo, deltah=deltah, lk_arr=lk_arr, a_arr=a_arr) | ||
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| assert np.all(np.isfinite(response)), "Pmm_resp produced infinity values." |
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What is this "Pmm_resp produced infinity values." doing?
| def Pmm_resp( | ||
| cosmo, | ||
| deltah=0.02, | ||
| extra_parameters={ |
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These aren't used anywhere.
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| def set_hmodified_cosmology(cosmo, deltah): | ||
| Omega_c = cosmo["Omega_c"] |
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hmm, and what if there are extra parameters given, eg. massive neutrinos? Wouldn't that be relevant? I guess you should make sure the cosmology object is exactly the same, except for the h
| return b2 | ||
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| def darkemu_set_cosmology(emu, cosmo): |
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Add and underscore if these methods are meant to be private (so not used by other libraries); e.g. _darkemu_set_cosmology. Also, add documentation. Same with the other "utility functions".
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In general, you should add a unit test for each function that you have defined in pkresponse.py to check that they are working properly. For instance, for set_hmodified_cosmology you would like to check that the output cosmologies are exactly the same as the input one, except for the h's.
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| kmin = 1e-2 | ||
| for ia, aa in enumerate(a_arr): | ||
| pk = pk2d.__call__(k_use, aa, cosmo) |
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You don't need to use __call__, you can just call it, pk2d(k_use, aa, cosmo)
| hbf = halos.HaloBiasTinker10(mass_def=mass_def) | ||
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| # dark emulator is valid for 0 =< z <= 1.48 | ||
| if np.any(1.0 / a_arr - 1) > 1.5: |
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if the maximum is 1.48, check for 1.48, not 1.5
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| # dark emulator is valid for 0 =< z <= 1.48 | ||
| if np.any(1.0 / a_arr - 1) > 1.5: | ||
| print("dark emulator is valid for z={:.2f}<1.48") |
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hmm, what does {:.2f} do here? I think you have to remove that.
| / ng | ||
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| bgE2 = ( |
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@damonge , can this be done with the current methods of the halo model?
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Same with the other integrals
| # Construct the full path for each data file (z=0) | ||
| k_data_path = os.path.join(data_directory_path, "k_h.npy") | ||
| k_data_mm_path = os.path.join(data_directory_path, "k_h_mm.npy") | ||
| Pmm_resp_data_path = os.path.join(data_directory_path, "Pmm_resp_z0.npy") |
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You have so much more data generated, at different redshifts. Why don't you use it?
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@carlosggarcia @RyoTerasawa can I check what the status of this PR is? |
In pyccl/pkresponse.py, I implemented the functions to calculate power spectrum responses to the super-survey modes which are responsible for super-sample covariance (SSC), based on arXiv:2310.13330.
We approximate the power spectrum growth response to the super-survey modes by its growth response to the Hubble parameter.
For the galaxy-matter and galaxy-auto power spectra, the halo statistics (halo-matter/halo-auto power spectrum, mass function) are calculated by DarkEmulator.