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Initialization failed message is misleading when using user defined inits #3288

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avehtari opened this issue May 23, 2024 · 0 comments · May be fixed by #3291
Open

Initialization failed message is misleading when using user defined inits #3288

avehtari opened this issue May 23, 2024 · 0 comments · May be fixed by #3291

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@avehtari
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When using the new CmdStanR to provide inits, I happen to have a case where the initial values have finite lp__, but non-finite gradient. The message coming from stan

stan/src/stan/services/util/initialize.hpp

Line 217 in c746ad2

msg << "Initialization between (-" << init_radius << ", " << init_radius

says "Initialization between (-2, 2) failed after 100 attempts. " which is confusing as fixed init values were used.
@SteveBronder SteveBronder linked a pull request May 28, 2024 that will close this issue
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update error message for different init types stan-dev/stan
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@avehtari