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#include <boost/python.hpp>
#include <boost/shared_ptr.hpp>
#include <dlib/matrix.h>
#include <dlib/data_io.h>
#include <dlib/sparse_vector.h>
#include <boost/python/args.hpp>
#include "pyassert.h"
using namespace dlib;
using namespace std;
using namespace boost::python;
typedef std::vector<std::pair<unsigned long,double> > sparse_vect;
void _make_sparse_vector (
sparse_vect& v
)
{
make_sparse_vector_inplace(v);
}
void _make_sparse_vector2 (
std::vector<sparse_vect>& v
)
{
for (unsigned long i = 0; i < v.size(); ++i)
make_sparse_vector_inplace(v[i]);
}
tuple _load_libsvm_formatted_data (
const std::string& file_name
)
{
std::vector<sparse_vect> samples;
std::vector<double> labels;
load_libsvm_formatted_data(file_name, samples, labels);
return make_tuple(samples, labels);
}
void _save_libsvm_formatted_data (
const std::string& file_name,
const std::vector<sparse_vect>& samples,
const std::vector<double>& labels
)
{
pyassert(samples.size() == labels.size(), "Invalid inputs");
save_libsvm_formatted_data(file_name, samples, labels);
}
void bind_other()
{
using boost::python::arg;
def("make_sparse_vector", _make_sparse_vector ,
"This function modifies its argument so that it is a properly sorted sparse vector.");
def("make_sparse_vector", _make_sparse_vector2 ,
"This function modifies a sparse_vectors object so that all elements it contains are properly sorted sparse vectors.");
def("load_libsvm_formatted_data",_load_libsvm_formatted_data, (arg("file_name")),
"ensures \n\
- Attempts to read a file of the given name that should contain libsvm \n\
formatted data. The data is returned as a tuple where the first tuple \n\
element is an array of sparse vectors and the second element is an array of \n\
labels. "
);
def("save_libsvm_formatted_data",_save_libsvm_formatted_data, (arg("file_name"), arg("samples"), arg("labels")),
"requires \n\
- len(samples) == len(labels) \n\
ensures \n\
- saves the data to the given file in libsvm format "
);
}