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chg fmt to libsvm

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This commit is contained in:
tqchen 2014-02-10 21:41:43 -08:00
parent 45a452b27e
commit bf81263301
2 changed files with 19 additions and 12 deletions
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1
booster/xgboost.cpp
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@ -13,7 +13,6 @@
// implementations of boosters
#include "tree/xgboost_svdf_tree.hpp"
#include "linear/xgboost_linear.hpp"
#include "../regression/xgboost_reg.h"
namespace xgboost{
namespace booster{

30
regression/xgboost_regdata.h
View File

@ -38,22 +38,30 @@ namespace xgboost{
inline void LoadText( const char* fname, bool silent = false ){
data.Clear();
FILE* file = utils::FopenCheck( fname, "r" );
float label;
int nonzero_dimension;
float label; bool init = true;
char tmp[ 1024 ];
std::vector<booster::bst_uint> findex;
std::vector<booster::bst_float> fvalue;
while( fscanf(file,"%f %d",&label,&nonzero_dimension) == 2 ){
findex.clear(); fvalue.clear();
for( int i = 0; i < nonzero_dimension; i++ ){
unsigned index; float value;
utils::Assert( fscanf(file, "%d:%f", &index, &value ) == 2,
"The feature dimension is not coincident with the indicated one" );
findex.push_back(index); fvalue.push_back(value);
while( fscanf( file, "%s", tmp ) == 1 ){
unsigned index; float value;
if( sscanf( tmp, "%u:%f", &index, &value ) == 2 ){
findex.push_back( index ); fvalue.push_back( value );
}else{
if( !init ){
labels.push_back( label );
data.AddRow( findex, fvalue );
}
findex.clear(); fvalue.clear();
utils::Assert( sscanf( tmp, "%f", &label ) == 1, "invalid format" );
init = false;
}
data.AddRow( findex, fvalue );
labels.push_back( label );
}
if( init ){
labels.push_back( label );
data.AddRow( findex, fvalue );
}
this->UpdateInfo();
if( !silent ){
printf("%ux%u matrix with %lu entries is loaded from %s\n",