jubatus::core::fv_converter::libsvm_converter Class Reference

#include <libsvm_converter.hpp>

Collaboration diagram for jubatus::core::fv_converter::libsvm_converter:

Static Public Member Functions
static void	convert (const std::string &line, datum &ret_datum, std::string &ret_label)

Detailed Description

Definition at line 28 of file libsvm_converter.hpp.

Member Function Documentation

void jubatus::core::fv_converter::libsvm_converter::convert ( const std::string &  line, datum &  ret_datum, std::string &  ret_label  )

static

Definition at line 28 of file libsvm_converter.cpp.

References JUBATUS_EXCEPTION, jubatus::core::fv_converter::datum::num_values_, and jubatus::core::fv_converter::datum::string_values_.

                          {
  std::string label;
  std::istringstream in(line);
  in >> label;
  datum::nv_t num_values;

  std::string s;
  while (in) {
    in >> s;
    if (!in) {
      break;
    }
    size_t p = s.find(':');
    if (p == std::string::npos) {
      throw JUBATUS_EXCEPTION(
          converter_exception("invalid libsvm format: " + s));
    }
    std::string id = s.substr(0, p);
    float val = jubatus::util::lang::lexical_cast<float>(s.substr(p + 1));
    num_values.push_back(make_pair(id, val));
  }

  ret_label.swap(label);
  ret_datum.string_values_.clear();
  ret_datum.num_values_.swap(num_values);
}

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The documentation for this class was generated from the following files:

• jubatus/core/fv_converter/libsvm_converter.hpp
• jubatus/core/fv_converter/libsvm_converter.cpp