#  Invalid hyperparameter configuration: learning\_rate when using distribution

**URL:** <https://community.wandb.ai/t/invalid-hyperparameter-configuration-learning-rate-when-using-distribution/17590>\
**Category:** W&B Help\
**Created:** [June 12, 2025, 1:55pm UTC](https://community.wandb.ai/t/invalid-hyperparameter-configuration-learning-rate-when-using-distribution/17590 "2025-06-12T13:55:25Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![kerenrozen](https://avatars.discourse-cdn.com/v4/letter/k/d78d45/32.png) [@kerenrozen](https://community.wandb.ai/u/kerenrozen)\
**Post date:** [June 12, 2025, 1:55pm UTC](https://community.wandb.ai/t/invalid-hyperparameter-configuration-learning-rate-when-using-distribution/17590/1 "2025-06-12T13:55:25Z")

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Hi, I’m trying to create the following sweep:

name: ResNet  
method: random  
metric:  
name: val\_loss  
goal: minimize  
parameters:  
learning\_rate:  
distribution: log\_uniform\_values  
min: 3e-5  
max: 3e-3  
batch\_size:  
values: [128, 256, 512]  
epochs:  
values: [200]  
filters\_1:  
values: [32, 64, 128]  
kernel\_size\_1:  
values: [3, 5, 7]  
filters\_2:  
values: [32, 64, 128]  
kernel\_size\_2:  
values: [3, 5, 7]  
filters\_3:  
values: [32, 64, 128]  
kernel\_size\_3:  
values: [3, 5, 7]  
pooling:  
values: [‘max’, ‘average’]  
dense\_units:  
values: [0, 128, 256]

When running: 'wandb sweep --entity \<\> —project \<\> sweep.yaml I get the following error:  
wandb: ERROR Error while calling W&B API: Invalid sweep config: invalid hyperparameter configuration: learning\_rate (\<Response [400]\>)  
Error: Invalid sweep config: invalid hyperparameter configuration: learning\_rate

Last week I was able to create sweeps with the same configuration for learning\_rate …  
I would appreciate your help to solve it. Thanks

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<div class="post-metadata">

**Author:** ![finnhenri-smidt](https://avatars.discourse-cdn.com/v4/letter/f/898d66/32.png) [@finnhenri-smidt](https://community.wandb.ai/u/finnhenri-smidt)\
**Post date:** [June 16, 2025, 9:23pm UTC](https://community.wandb.ai/t/invalid-hyperparameter-configuration-learning-rate-when-using-distribution/17590/2 "2025-06-16T21:23:10Z")

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Same issue here: Sweep config that was running perfectly fine now throws this error. Would greatly appreciate the help! 🙏

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**Author:** ![koroviev](https://avatars.discourse-cdn.com/v4/letter/k/db5fbb/32.png) [@koroviev](https://community.wandb.ai/u/koroviev)\
**Post date:** [July 16, 2025, 10:20am UTC](https://community.wandb.ai/t/invalid-hyperparameter-configuration-learning-rate-when-using-distribution/17590/3 "2025-07-16T10:20:02Z")

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For distribution log\_uniform\_values under learning\_rate, do not use exponent notation, i.e. instead of “3e-5” use 0.00003 and not “3e-3”, but “0.003”.