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allow nan as mssing

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tqchen 2014-11-20 13:14:04 -08:00
parent 076159cf7a
commit ed87eb61bd
1 changed files with 8 additions and 3 deletions
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7
wrapper/xgboost_wrapper.cpp
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@ -132,6 +132,7 @@ extern "C"{
bst_ulong nrow,
bst_ulong ncol,
float missing) {
bool nan_missing = std::isnan(missing);
DMatrixSimple *p_mat = new DMatrixSimple();
DMatrixSimple &mat = *p_mat;
mat.info.info.num_row = nrow;
@ -139,11 +140,15 @@ extern "C"{
for (bst_ulong i = 0; i < nrow; ++i, data += ncol) {
bst_ulong nelem = 0;
for (bst_ulong j = 0; j < ncol; ++j) {
if (data[j] != missing) {
if (std::isnan(data[j])) {
utils::Check(nan_missing, "There are NAN in the matrix, however, you did not set missing=NAN");
} else {
if (nan_missing || data[j] != missing) {
mat.row_data_.push_back(RowBatch::Entry(j, data[j]));
++nelem;
}
}
}
mat.row_ptr_.push_back(mat.row_ptr_.back() + nelem);
}
return p_mat;