189 lines
5.1 KiB
C
189 lines
5.1 KiB
C
/*!
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* Copyright 2014 (c) by Contributors
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* \file xgboost_wrapper_R.h
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* \author Tianqi Chen
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* \brief R wrapper of xgboost
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*/
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#ifndef XGBOOST_R_H_ // NOLINT(*)
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#define XGBOOST_R_H_ // NOLINT(*)
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#include <Rinternals.h>
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#include <R_ext/Random.h>
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#include <Rmath.h>
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#include <xgboost/c_api.h>
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/*!
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* \brief check whether a handle is NULL
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* \param handle
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* \return whether it is null ptr
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*/
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XGB_DLL SEXP XGCheckNullPtr_R(SEXP handle);
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/*!
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* \brief load a data matrix
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* \param fname name of the content
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* \param silent whether print messages
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* \return a loaded data matrix
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*/
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XGB_DLL SEXP XGDMatrixCreateFromFile_R(SEXP fname, SEXP silent);
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/*!
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* \brief create matrix content from dense matrix
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* This assumes the matrix is stored in column major format
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* \param data R Matrix object
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* \param missing which value to represent missing value
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* \return created dmatrix
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*/
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XGB_DLL SEXP XGDMatrixCreateFromMat_R(SEXP mat,
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SEXP missing);
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/*!
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* \brief create a matrix content from CSC format
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* \param indptr pointer to column headers
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* \param indices row indices
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* \param data content of the data
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* \return created dmatrix
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*/
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XGB_DLL SEXP XGDMatrixCreateFromCSC_R(SEXP indptr,
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SEXP indices,
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SEXP data);
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/*!
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* \brief create a new dmatrix from sliced content of existing matrix
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* \param handle instance of data matrix to be sliced
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* \param idxset index set
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* \return a sliced new matrix
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*/
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XGB_DLL SEXP XGDMatrixSliceDMatrix_R(SEXP handle, SEXP idxset);
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/*!
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* \brief load a data matrix into binary file
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* \param handle a instance of data matrix
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* \param fname file name
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* \param silent print statistics when saving
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* \return R_NilValue
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*/
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XGB_DLL SEXP XGDMatrixSaveBinary_R(SEXP handle, SEXP fname, SEXP silent);
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/*!
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* \brief set information to dmatrix
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* \param handle a instance of data matrix
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* \param field field name, can be label, weight
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* \param array pointer to float vector
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* \return R_NilValue
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*/
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XGB_DLL SEXP XGDMatrixSetInfo_R(SEXP handle, SEXP field, SEXP array);
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/*!
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* \brief get info vector from matrix
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* \param handle a instance of data matrix
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* \param field field name
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* \return info vector
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*/
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XGB_DLL SEXP XGDMatrixGetInfo_R(SEXP handle, SEXP field);
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/*!
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* \brief return number of rows
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* \param handle an instance of data matrix
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*/
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XGB_DLL SEXP XGDMatrixNumRow_R(SEXP handle);
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/*!
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* \brief return number of columns
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* \param handle an instance of data matrix
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*/
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XGB_DLL SEXP XGDMatrixNumCol_R(SEXP handle);
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/*!
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* \brief create xgboost learner
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* \param dmats a list of dmatrix handles that will be cached
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*/
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XGB_DLL SEXP XGBoosterCreate_R(SEXP dmats);
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/*!
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* \brief set parameters
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* \param handle handle
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* \param name parameter name
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* \param val value of parameter
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* \return R_NilValue
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*/
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XGB_DLL SEXP XGBoosterSetParam_R(SEXP handle, SEXP name, SEXP val);
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/*!
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* \brief update the model in one round using dtrain
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* \param handle handle
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* \param iter current iteration rounds
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* \param dtrain training data
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* \return R_NilValue
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*/
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XGB_DLL SEXP XGBoosterUpdateOneIter_R(SEXP ext, SEXP iter, SEXP dtrain);
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/*!
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* \brief update the model, by directly specify gradient and second order gradient,
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* this can be used to replace UpdateOneIter, to support customized loss function
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* \param handle handle
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* \param dtrain training data
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* \param grad gradient statistics
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* \param hess second order gradient statistics
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* \return R_NilValue
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*/
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XGB_DLL SEXP XGBoosterBoostOneIter_R(SEXP handle, SEXP dtrain, SEXP grad, SEXP hess);
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/*!
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* \brief get evaluation statistics for xgboost
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* \param handle handle
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* \param iter current iteration rounds
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* \param dmats list of handles to dmatrices
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* \param evname name of evaluation
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* \return the string containing evaluation stats
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*/
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XGB_DLL SEXP XGBoosterEvalOneIter_R(SEXP handle, SEXP iter, SEXP dmats, SEXP evnames);
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/*!
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* \brief make prediction based on dmat
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* \param handle handle
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* \param dmat data matrix
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* \param option_mask output_margin:1 predict_leaf:2
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* \param ntree_limit limit number of trees used in prediction
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*/
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XGB_DLL SEXP XGBoosterPredict_R(SEXP handle, SEXP dmat, SEXP option_mask, SEXP ntree_limit);
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/*!
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* \brief load model from existing file
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* \param handle handle
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* \param fname file name
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* \return R_NilValue
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*/
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XGB_DLL SEXP XGBoosterLoadModel_R(SEXP handle, SEXP fname);
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/*!
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* \brief save model into existing file
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* \param handle handle
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* \param fname file name
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* \return R_NilValue
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*/
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XGB_DLL SEXP XGBoosterSaveModel_R(SEXP handle, SEXP fname);
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/*!
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* \brief load model from raw array
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* \param handle handle
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* \return R_NilValue
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*/
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XGB_DLL SEXP XGBoosterLoadModelFromRaw_R(SEXP handle, SEXP raw);
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/*!
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* \brief save model into R's raw array
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* \param handle handle
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* \return raw array
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*/
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XGB_DLL SEXP XGBoosterModelToRaw_R(SEXP handle);
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/*!
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* \brief dump model into a string
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* \param handle handle
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* \param fmap name to fmap can be empty string
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* \param with_stats whether dump statistics of splits
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*/
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XGB_DLL SEXP XGBoosterDumpModel_R(SEXP handle, SEXP fmap, SEXP with_stats);
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#endif // XGBOOST_WRAPPER_R_H_ // NOLINT(*)
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