# Getting error during calculation of deviance information criterion(DIC)

**URL:** https://discourse.pymc.io/t/getting-error-during-calculation-of-deviance-information-criterion-dic/5782
**Category:** Questions
**Created:** [September 15, 2020, 1:38pm UTC](https://discourse.pymc.io/t/getting-error-during-calculation-of-deviance-information-criterion-dic/5782 "2020-09-15T13:38:07Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![rrpt](https://avatars.discourse-cdn.com/v4/letter/r/7c8e57/32.png) [@rrpt](https://discourse.pymc.io/u/rrpt)
#### Post date: [September 15, 2020, 1:38pm UTC](https://discourse.pymc.io/t/getting-error-during-calculation-of-deviance-information-criterion-dic/5782/1 "2020-09-15T13:38:07Z")

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While ececution of this line `pm.dic(linear_trace,model=model)`  
i am getting this error `AttributeError: module 'pymc3' has no attribute 'dic'`

pymc3 version : 3.9.3

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### Author: ![OriolAbril](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/oriolabril/32/2497_2.png) [@OriolAbril](https://discourse.pymc.io/u/OriolAbril)
#### Post date: [September 15, 2020, 8:45pm UTC](https://discourse.pymc.io/t/getting-error-during-calculation-of-deviance-information-criterion-dic/5782/2 "2020-09-15T20:45:15Z")

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DIC has been removed due to its limitations within the Bayesian framework as described [https://link.springer.com/content/pdf/10.1007/s11222-013-9416-2.pdf](https://link.springer.com/content/pdf/10.1007/s11222-013-9416-2.pdf).

I’d suggest you use [`az.loo`](https://arviz-devs.github.io/arviz/generated/arviz.loo.html#arviz.loo) or [`az.waic`](https://arviz-devs.github.io/arviz/generated/arviz.waic.html#arviz.waic) instead. They can also be called as `pm.loo/waic` which are aliases to the ArviZ functions mentioned previously.