# UserWarning: constrain\_similarities is set to \`False\`. However it is True

**URL:** <https://forum.rasa.com/t/userwarning-constrain-similarities-is-set-to-false-however-it-is-true/51875>\
**Category:** Rasa Open Source\
**Created:** [March 10, 2022, 4:16pm UTC](https://forum.rasa.com/t/userwarning-constrain-similarities-is-set-to-false-however-it-is-true/51875 "2022-03-10T16:16:03Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![userRasa03](https://avatars.discourse-cdn.com/v4/letter/u/da6949/32.png) [@userRasa03](https://forum.rasa.com/u/userRasa03)\
**Post date:** [March 10, 2022, 4:16pm UTC](https://forum.rasa.com/t/userwarning-constrain-similarities-is-set-to-false-however-it-is-true/51875/1 "2022-03-10T16:16:03Z")

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hey

I am getting this warning:

```auto
UserWarning: constrain_similarities is set to `False`. It is recommended to set it to `True` when using cross-entropy loss. It will be set to `True` by default, Rasa Open Source 3.0.0 onwards.

```

However the `constrain_similarities` in `config.yml` is `true`. What should I do to stop this or make sure it is OK?

Rasa version 2.8.15

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**Author:** ![ChrisRahme](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/chrisrahme/32/15572_2.png) [@ChrisRahme](https://forum.rasa.com/u/ChrisRahme)\
**Post date:** [March 10, 2022, 6:26pm UTC](https://forum.rasa.com/t/userwarning-constrain-similarities-is-set-to-false-however-it-is-true/51875/2 "2022-03-10T18:26:29Z")

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Can you post your `config.yml` file?

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**Author:** ![nik202](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/nik202/32/16098_2.png) [@nik202](https://forum.rasa.com/u/nik202)\
**Post date:** [March 10, 2022, 7:25pm UTC](https://forum.rasa.com/t/userwarning-constrain-similarities-is-set-to-false-however-it-is-true/51875/3 "2022-03-10T19:25:04Z")

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It’s just the User Warning and it will not impact the bot/user conversations, so nothing to worries.

```auto
 - name: DIETClassifier
    epochs: 100
    ranking_length: 5
    constrain_similarities: true
    model_confidence: linear_norm

```

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<div class="post-metadata">

**Author:** ![userRasa03](https://avatars.discourse-cdn.com/v4/letter/u/da6949/32.png) [@userRasa03](https://forum.rasa.com/u/userRasa03)\
**Post date:** [March 10, 2022, 8:07pm UTC](https://forum.rasa.com/t/userwarning-constrain-similarities-is-set-to-false-however-it-is-true/51875/4 "2022-03-10T20:07:05Z")

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thanks, I tried putting all `constrain_similarities: true` like suggested but I still get the Warning. I would like to remove the Warning to make sure if I change Rasa version nothing will happen you know

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**Author:** ![ChrisRahme](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/chrisrahme/32/15572_2.png) [@ChrisRahme](https://forum.rasa.com/u/ChrisRahme)\
**Post date:** [March 10, 2022, 9:00pm UTC](https://forum.rasa.com/t/userwarning-constrain-similarities-is-set-to-false-however-it-is-true/51875/5 "2022-03-10T21:00:33Z")

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> [@ChrisRahme](#):
>
> Can you post your `config.yml` file?

There are other components that use `constrain_similarities`.

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<div class="post-metadata">

**Author:** ![NIlimaN](https://avatars.discourse-cdn.com/v4/letter/n/ee59a6/32.png) [@NIlimaN](https://forum.rasa.com/u/NIlimaN)\
**Post date:** [July 1, 2022, 8:03am UTC](https://forum.rasa.com/t/userwarning-constrain-similarities-is-set-to-false-however-it-is-true/51875/6 "2022-07-01T08:03:45Z")

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[config.yml](https://forum.rasa.com/uploads/short-url/xjYlVt0DqslBUySF596hxoTGqiU.yml) (1.4 KB)

Hi @ChrisRahme , I get the same warning. Here’s my config file. Can you help out?

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<div class="post-metadata">

**Author:** ![hack-r](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/hack-r/32/22684_2.png) [@hack-r](https://forum.rasa.com/u/hack-r)\
**Post date:** [May 29, 2023, 10:30pm UTC](https://forum.rasa.com/t/userwarning-constrain-similarities-is-set-to-false-however-it-is-true/51875/7 "2023-05-29T22:30:29Z")

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same here

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<div class="post-metadata">

**Author:** ![PathPDX](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/pathpdx/32/22943_2.png) [@PathPDX](https://forum.rasa.com/u/PathPDX)\
**Post date:** [June 3, 2023, 8:18pm UTC](https://forum.rasa.com/t/userwarning-constrain-similarities-is-set-to-false-however-it-is-true/51875/8 "2023-06-03T20:18:13Z")

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“UserWarning: constrain\_similarities is set to `False`. It is recommended to set it to `True` when using cross-entropy loss.”

Same. I’ve set contrain\_similarities to true in all cases. I’m using cross-entropy on DIET and that’s definitely set to true. I really don’t like warning messages. I’ve already got these two that aren’t even in my code and they drive me nuts:

C:\Python\Python310\lib\site-packages\rasa\core\tracker\_store.py:1048: MovedIn20Warning: Deprecated API features detected! These feature(s) are not compatible with SQLAlchemy 2.0. To prevent incompatible upgrades prior to updating applications, ensure requirements files are pinned to “sqlalchemy\<2.0”. Set environment variable SQLALCHEMY\_WARN\_20=1 to show all deprecation warnings. Set environment variable SQLALCHEMY\_SILENCE\_UBER\_WARNING=1 to silence this message. (Background on SQLAlchemy 2.0 at: [Error Messages — SQLAlchemy 2.0 Documentation](https://sqlalche.me/e/b8d9)) Base: DeclarativeMeta = declarative\_base()

C:\Python\Python310\lib\site-packages\tensorflow\python\framework\dtypes.py:246: DeprecationWarning: `np.bool8` is a deprecated alias for `np.bool_`. (Deprecated NumPy 1.24) np.bool8: (False, True),