Hendrik/xgboost
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add new combine tool as promised

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This commit is contained in:
tqchen
2014-05-02 12:55:34 -07:00
parent 657c617215
commit 3128e718e2
3 changed files with 286 additions and 2 deletions
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24
regrank/xgboost_regrank_data.h
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@@ -15,6 +15,8 @@
*/
#include <cstdio>
#include <vector>
#include <string>
#include <cstring>
#include "../booster/xgboost_data.h"
#include "../utils/xgboost_utils.h"
#include "../utils/xgboost_stream.h"
@@ -106,6 +108,13 @@ namespace xgboost{
data.LoadBinary(fs);
info.labels.resize(data.NumRow());
utils::Assert(fs.Read(&info.labels[0], sizeof(float)* data.NumRow()) != 0, "DMatrix LoadBinary");
{// load in group ptr
unsigned ngptr;
if( fs.Read(&ngptr, sizeof(unsigned) ) != 0 ){
info.group_ptr.resize( ngptr );
utils::Assert( fs.Read(&info.group_ptr[0], sizeof(unsigned) * ngptr) != 0, "Load group file");
}
}
fs.Close();
// initialize column support as well
data.InitData();
@@ -113,8 +122,10 @@ namespace xgboost{
if (!silent){
printf("%ux%u matrix with %lu entries is loaded from %s\n",
(unsigned)data.NumRow(), (unsigned)data.NumCol(), (unsigned long)data.NumEntry(), fname);
if( info.group_ptr.size() != 0 ){
printf("data contains %u groups\n", (unsigned)info.group_ptr.size() );
}
}
this->TryLoadGroup(fname, silent);
this->TryLoadWeight(fname, silent);
return true;
}
@@ -129,11 +140,20 @@ namespace xgboost{
utils::FileStream fs(utils::FopenCheck(fname, "wb"));
data.SaveBinary(fs);
fs.Write(&info.labels[0], sizeof(float)* data.NumRow());
utils::Assert( info.labels.size() == data.NumRow(), "label size is not consistent with feature matrix size" );
fs.Write(&info.labels[0], sizeof(float) * data.NumRow());
{// write out group ptr
unsigned ngptr = static_cast<unsigned>( info.group_ptr.size() );
fs.Write(&ngptr, sizeof(unsigned) );
fs.Write(&info.group_ptr[0], sizeof(unsigned) * ngptr);
}
fs.Close();
if (!silent){
printf("%ux%u matrix with %lu entries is saved to %s\n",
(unsigned)data.NumRow(), (unsigned)data.NumCol(), (unsigned long)data.NumEntry(), fname);
if( info.group_ptr.size() != 0 ){
printf("data contains %u groups\n", (unsigned)info.group_ptr.size() );
}
}
}
/*!