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Inconsistency in libsvm formats #1325

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Jul 3, 2016
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Inconsistency in libsvm formats #1325

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Inconsistency in libsvm formats
mhaseebtariq Jul 3, 2016
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note on libsvm formats
mhaseebtariq Jul 3, 2016
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4 changes: 4 additions & 0 deletions jvm-packages/README.md
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Expand Up @@ -16,6 +16,10 @@ and power xgboost into JVM ecosystem.
You can find more about XGBoost on [Documentation](https://xgboost.readthedocs.org/en/latest/jvm/index.html) and [Resource Page](../demo/README.md).

## Hello World
*NOTE*: Use **1-based** ascending indexes for libsvm format in distributed training mode:
- Spark does the internal conversion, and do not accept formats that are 0-based
- WHEREAS - use **0-based** indexes format when predicting (for instance using the saved model in the Python package) in normal mode

### XGBoost Scala
```scala
import ml.dmlc.xgboost4j.scala.DMatrix
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