rical overflow, while
others are relatively robust. Based on these two characteristics, we propose
the Convergence Ranking Metric (CRM) and the Initial Guessing Metric (IGM): CRM
is used to identify whether a TarFlow block is "simple" (converges in few
iterations) or "tough" (requires more iterations); IGM is used to evaluate
whether the initial value of the iteration is good. Experiments on four TarFlow
models demonstrate that GS-Jacobi sampling can significantly enhance sampling
efficiency while maintaini