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Remove dead code. #5635

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Merged
trivialfis merged 1 commit into from
May 6, 2020
Merged

Remove dead code. #5635

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25 changes: 0 additions & 25 deletions include/xgboost/data.h
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Original file line number Diff line number Diff line change
Expand Up @@ -419,33 +419,8 @@ class BatchSet {
BatchIterator<T> begin_iter_;
};

/*!
* \brief This is data structure that user can pass to DMatrix::Create
* to create a DMatrix for training, user can create this data structure
* for customized Data Loading on single machine.
*
* On distributed setting, usually an customized dmlc::Parser is needed instead.
*/
template<typename T>
class DataSource : public dmlc::DataIter<T> {
public:
/*!
* \brief Meta information about the dataset
* The subclass need to be able to load this correctly from data.
*/
MetaInfo info;
};

/*!
* \brief Internal data structured used by XGBoost during training.
* There are two ways to create a customized DMatrix that reads in user defined-format.
*
* - Provide a dmlc::Parser and pass into the DMatrix::Create
* - Alternatively, if data can be represented by an URL, define a new dmlc::Parser and register by
* DMLC_REGISTER_DATA_PARSER;
* - This works best for user defined data input source, such as data-base, filesystem.
* - Provide a DataSource, that can be passed to DMatrix::Create
* This can be used to re-use inmemory data structure into DMatrix.
*/
class DMatrix {
public:
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