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BUG FIX: parallel tempering swaps #14

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BUG FIX: parallel tempering swaps #14

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4864635
attempting to fix swapping bug
astrolamb Oct 21, 2025
69a84ab
minor bug fix
astrolamb Oct 21, 2025
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8 changes: 6 additions & 2 deletions QuickCW/QuickMCMCUtils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -175,13 +175,17 @@ def do_pt_swap(n_chain, samples, itrb, Ts, a_yes, a_no, x0s, FLIs, log_likelihoo
FLIs_new = []
x0s_new = []
fisher_diag_new = np.zeros_like(fisher_diag)
samples_new = np.zeros_like(samples)
log_likelihood_new = np.zeros_like(log_likelihood)
for j in range(n_chain):
samples[j,itrb+1,:] = samples[swap_map[j],itrb,:]
samples_new[j,itrb+1,:] = samples[swap_map[j],itrb,:]
fisher_diag_new[j,:] = fisher_diag[swap_map[j],:]
log_likelihood[j,itrb+1] = log_likelihood[swap_map[j],itrb]
log_likelihood_new[j,itrb+1] = log_likelihood[swap_map[j],itrb]
FLIs_new.append(FLIs[swap_map[j]])
x0s_new.append(x0s[swap_map[j]])

samples = samples_new
log_likelihood = log_likelihood_new
fisher_diag[:] = fisher_diag_new
FLIs[:] = List(FLIs_new)
x0s[:] = List(x0s_new)
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