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Update VItamin and Bilby with Different Noises
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May 04, 2021
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Wei Changfeng
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From the following tests, VItamin is more stable than Bilby.
From the result of following tests, VItamin is more stable than Bilby.
I calculate JS divergence for No.2 signal, whose posterior with different noises can be seen in 1.(1)(ii). Here is the script for JSD calculation:
https://gilsay.physics.gla.ac.uk/gitlab/wei.changfeng/weichangfeng_project/blob/master/JSD_calculation.ipynb
# 1. BH Encounter
## (1) VItamin
We use No.5 signal with mass ratio q = 8, M=150, d=5.
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### (ii) No.2 signal
We also use spinning BBH template to do PE run on No.2 signal with mass ratio q = 1, M=150, d=15.
As we can see, the posteriors are similar, while there is a little difference. The distance isn't estimated accurately.
Then we calculate JSD for them. For m1, JSD_12 = 0.499, JSD_13 = 0.299. For m2, JSD_12 = 0.351, JSD_13 = 0.292. For d, JSD_12 = 0.631, JSD_13 = 0.502.
Fig.8 No.2 signal with mass ratio q = 1, random seed = 100.

Fig.9 No.2 signal with mass ratio q = 1, random seed = 1000.
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