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Add warnings for large labels when using GPU histogram algorithms (#2834)

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Rory Mitchell
2017-10-26 17:31:10 +13:00
committed by GitHub
parent 13e7a2cff0
commit d9d5293cdb
5 changed files with 51 additions and 23 deletions
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14
doc/gpu/index.md
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@@ -12,13 +12,13 @@ Specify the 'tree_method' parameter as one of the following algorithms.
### Algorithms
```eval_rst
+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------+
| tree_method | Description |
+==============+===============================================================================================================================================+
| gpu_exact | The standard XGBoost tree construction algorithm. Performs exact search for splits. Slower and uses considerably more memory than 'gpu_hist' |
+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------+
| gpu_hist | Equivalent to the XGBoost fast histogram algorithm. Faster and uses considerably less memory. Splits may be less accurate. |
+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------+
+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| tree_method | Description |
+==============+=================================================================================================================================================================================================================+
| gpu_exact | The standard XGBoost tree construction algorithm. Performs exact search for splits. Slower and uses considerably more memory than 'gpu_hist' |
+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| gpu_hist | Equivalent to the XGBoost fast histogram algorithm. Much faster and uses considerably less memory. NOTE: Cannot be used with labels larger in magnitude than 2^16 due to it's histogram aggregation algorithm. |
+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
```
### Supported parameters