Observations When providing an analytical gradient for optimization using LBFGS with boxed constraints, the optimizer fails occasionally due to gradient becoming NaN, i.e. g(x) = [Nan, ..., Nan]. The analytical gradient I provide never returns NaN. When using BFGS no issue is found Without an anal…

L-BFGS returns a NaN gradient when providing analytical gradient. BFGS shows no issues

Tamas_Papp January 31, 2021, 1:16pm 2

A self-contained MWE would help a lot in investigating this.

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