The type of experiment metric direction.
| Enums | |
|---|---|
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                Not specified. | 
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                The value is unknown in this version. | 
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                The goal of the experiment is to not change the metric. | 
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                The goal of the experiment is to increate the metric. | 
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                The goal of the experiment is to decrease the metric. | 
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                The goal of the experiment is to either not change or increase the metric. | 
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                The goal of the experiment is to either not change or decrease the metric. |