# Dqn algo epsilon not logged

**URL:** <https://discuss.ray.io/t/dqn-algo-epsilon-not-logged/8473>\
**Category:** RLlib\
**Created:** [November 30, 2022, 7:28am UTC](https://discuss.ray.io/t/dqn-algo-epsilon-not-logged/8473 "2022-11-30T07:28:27Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![varunjammula](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/varunjammula/32/2065_2.png) [@varunjammula](https://discuss.ray.io/u/varunjammula)\
**Post date:** [November 30, 2022, 7:28am UTC](https://discuss.ray.io/t/dqn-algo-epsilon-not-logged/8473/1 "2022-11-30T07:28:27Z")

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- High: It blocks me to complete my task.

Hi, I am using the dqn algorithm with ray 2.1 and EpsilonGreedy exploration schedule. I am unable to see the current value in tensorboard logs. Can some one help me out on how I can get the cur\_epsilon value in tensorboard.

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**Author:** ![arturn](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/arturn/32/2096_2.png) [@arturn](https://discuss.ray.io/u/arturn)\
**Post date:** [November 30, 2022, 9:08pm UTC](https://discuss.ray.io/t/dqn-algo-epsilon-not-logged/8473/2 "2022-11-30T21:08:35Z")

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Tensorboard always shows metrics that are collected over whole episodes. These are aggregations, possibly spanning many episodes. But never the current value. You can start ray with ray.init(local\_mode=True) and set a break point inside the exploration schedule if you need to inspect values, or simply print them there.

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**Author:** ![varunjammula](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/varunjammula/32/2065_2.png) [@varunjammula](https://discuss.ray.io/u/varunjammula)\
**Post date:** [November 30, 2022, 9:38pm UTC](https://discuss.ray.io/t/dqn-algo-epsilon-not-logged/8473/3 "2022-11-30T21:38:13Z")

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Thank you for the response. But I was able to view cur\_epsilon value in TB using previous ray version. I am certain about that.

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**Author:** ![arturn](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/arturn/32/2096_2.png) [@arturn](https://discuss.ray.io/u/arturn)\
**Post date:** [December 1, 2022, 6:35pm UTC](https://discuss.ray.io/t/dqn-algo-epsilon-not-logged/8473/4 "2022-12-01T18:35:23Z")

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Oh ok I thought you where talking about the current epsilon as in the one that appears per step.

Looking at [this issue](https://github.com/ray-project/ray/issues/13337) makes me believe that we have not included it for a while. I’m looking into it.