# Arbiter

**URL:** https://community.konduit.ai/c/arbiter/16.md

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## [About the Arbiter category](https://community.konduit.ai/t/about-the-arbiter-category/40)

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**Author:** [@treo](https://community.konduit.ai/u/treo)\
**Replies:** 0\
**Last updated:** [November 22, 2019, 2:02pm UTC](https://community.konduit.ai/t/about-the-arbiter-category/40 "2019-11-22T14:02:26Z")

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Arbiter is a tool dedicated to tuning (hyperparameter optimization) of machine learning models. Learn more about arbiter here: https://deeplearning4j.org/docs/latest/arbiter-overview Find some examples of using arbit…

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## [Differences in Results for optimized model](https://community.konduit.ai/t/differences-in-results-for-optimized-model/1817)

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**Author:** [@JanHolzweber](https://community.konduit.ai/u/JanHolzweber)\
**Replies:** 7\
**Last updated:** [April 7, 2022, 12:28pm UTC](https://community.konduit.ai/t/differences-in-results-for-optimized-model/1817 "2022-04-07T12:28:00Z")

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I am trying to optimize my model with arbiter according to the dl4j/arbiter documentation documentation. Here is the code I use for the optimization: ContinuousParameterSpace momentum = new ContinuousParameterSpace(0.…

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## [Arbiter and 3d convolution](https://community.konduit.ai/t/arbiter-and-3d-convolution/1601)

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**Author:** [@koomikko](https://community.konduit.ai/u/koomikko)\
**Replies:** 1\
**Last updated:** [September 15, 2021, 3:22am UTC](https://community.konduit.ai/t/arbiter-and-3d-convolution/1601 "2021-09-15T03:22:42Z")

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Hi, Does arbiter hyperparameter optimization support 3d convolutional layers? Already have it working for MLP, but no luck with 3d convolution network.

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## [Two issues with parameter space](https://community.konduit.ai/t/two-issues-with-parameter-space/747)

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**Author:** [@cagneymoreau](https://community.konduit.ai/u/cagneymoreau)\
**Replies:** 3\
**Last updated:** [April 3, 2021, 2:15pm UTC](https://community.konduit.ai/t/two-issues-with-parameter-space/747 "2021-04-03T14:15:15Z")

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I am trying to put a learning rate parameterspace into each updaters discretespace but its not apparent how to do it. Second I get an error using an lstm layerspace if I use an activation function other than tanh. Is th…

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## [Arbiter performance for HP tuning](https://community.konduit.ai/t/arbiter-performance-for-hp-tuning/418)

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**Author:** [@taufikalhkm](https://community.konduit.ai/u/taufikalhkm)\
**Replies:** 0\
**Last updated:** [April 15, 2020, 7:02am UTC](https://community.konduit.ai/t/arbiter-performance-for-hp-tuning/418 "2020-04-15T07:02:21Z")

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Hi, i am currently working on CNN and using arbiter to tune the hyperparameter. i tried using network model below. as i read performance guide for DL4J, GPU cuDNN computing is only implemented to specific layer object …

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## [How to read out ParameterSpace definition?](https://community.konduit.ai/t/how-to-read-out-parameterspace-definition/317)

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**Author:** [@printomi](https://community.konduit.ai/u/printomi)\
**Replies:** 2\
**Last updated:** [March 27, 2020, 9:38am UTC](https://community.konduit.ai/t/how-to-read-out-parameterspace-definition/317 "2020-03-27T09:38:15Z")

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Hi, I am working on the persistence of Arbiter parameter spaces. I have to save the parameter spaces in a relational database, so I would like to avoid storing the JSON serialization. I would prefer to read out the defin…

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## [How to get all candidates and their scores during optimization?](https://community.konduit.ai/t/how-to-get-all-candidates-and-their-scores-during-optimization/291)

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**Author:** [@taufikalhkm](https://community.konduit.ai/u/taufikalhkm)\
**Replies:** 6\
**Last updated:** [March 27, 2020, 7:18am UTC](https://community.konduit.ai/t/how-to-get-all-candidates-and-their-scores-during-optimization/291 "2020-03-27T07:18:58Z")

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i was trying to extract the Hyperparameter combination with it’s loss/score. is it possible to do so? i want to inspect all possible combination and its losses what kind of command i can use? i am using DL4j-example re…