# VeloVI model formulation

**URL:** <https://discourse.scverse.org/t/velovi-model-formulation/2521>\
**Category:** Help\
**Tags:** velocity\
**Created:** [September 18, 2024, 9:52pm UTC](https://discourse.scverse.org/t/velovi-model-formulation/2521 "2024-09-18T21:52:42Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![mmagzoub](https://avatars.discourse-cdn.com/v4/letter/m/c67d28/32.png) [@mmagzoub](https://discourse.scverse.org/u/mmagzoub)\
**Post date:** [September 18, 2024, 9:52pm UTC](https://discourse.scverse.org/t/velovi-model-formulation/2521/1 "2024-09-18T21:52:42Z")

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I’m moving from using scvelo to veloVI for RNA velocity analysis and I had a question about how the specification of the dynamical model compares. There is an option in scvelo recover dynamics to fit\_basal\_transcription, is there a similar option in veloVI?