jubatus::core::fv_converter::sigmoid_normalization_filter Class Reference

#include <num_filter_impl.hpp>

Inheritance diagram for jubatus::core::fv_converter::sigmoid_normalization_filter:

Collaboration diagram for jubatus::core::fv_converter::sigmoid_normalization_filter:

Public Member Functions
double	filter (double value) const
	sigmoid_normalization_filter (double gain, double bias)
Public Member Functions inherited from jubatus::core::fv_converter::num_filter
virtual	~num_filter ()

Private Attributes
double	bias_
double	gain_

Detailed Description

Definition at line 92 of file num_filter_impl.hpp.

Constructor & Destructor Documentation

jubatus::core::fv_converter::sigmoid_normalization_filter::sigmoid_normalization_filter ( double  gain, double  bias  )

inline

Definition at line 94 of file num_filter_impl.hpp.

References gain_, and JUBATUS_EXCEPTION.

    : bias_(bias), gain_(gain) {
    if (gain_ == 0.0) {
      throw JUBATUS_EXCEPTION(
          common::invalid_parameter("gain must not be zero"));
    }
  }

Member Function Documentation

double jubatus::core::fv_converter::sigmoid_normalization_filter::filter ( double  value ) const

inlinevirtual

Implements jubatus::core::fv_converter::num_filter.

Definition at line 103 of file num_filter_impl.hpp.

References bias_, and gain_.

                                    {
    return 1.0 / (1 + std::exp(-gain_ * (value - bias_)));
  }

Member Data Documentation

double jubatus::core::fv_converter::sigmoid_normalization_filter::bias_

private

Definition at line 108 of file num_filter_impl.hpp.

Referenced by filter().

double jubatus::core::fv_converter::sigmoid_normalization_filter::gain_

private

Definition at line 109 of file num_filter_impl.hpp.

Referenced by filter(), and sigmoid_normalization_filter().

---

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

• jubatus/core/fv_converter/num_filter_impl.hpp