utils.h File Reference

#include <Eigen/Dense>
#include <vector>
#include <fstream>
#include <sstream>
#include <chrono>
#include <ostream>
#include <map>
#include "../init.h"
#include "error.h"
#include <shogun/lib/common.h>

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Classes
class	FT::Util::Timer
	class for timing things. More...
struct	FT::Util::Normalizer
	normalizes a matrix to unit variance, 0 mean centered. More...
struct	FT::Util::Log_Stats

Namespaces
	FT
	main Feat namespace
	FT::Util
	namespace containing various utility functions used in Feat

Typedefs
typedef struct Log_Stats	FT::Util::Log_stats

Functions
void	FT::Util::clean (ArrayXf &x)
	limits node output to be between MIN_FLT and MAX_FLT More...
void	FT::Util::clean (VectorXf &x)
std::string	FT::Util::ltrim (std::string str, const std::string &chars)
std::string	FT::Util::rtrim (std::string str, const std::string &chars)
std::string	FT::Util::trim (std::string str, const std::string &chars)
template<typename T >
bool	FT::Util::in (const vector< T > v, const T &i)
	check if element is in vector. More...
float	FT::Util::median (const ArrayXf &v)
	calculate median More...
float	FT::Util::variance (const ArrayXf &v, float mean)
	calculate variance when mean provided More...
float	FT::Util::variance (const ArrayXf &v)
	calculate variance More...
float	FT::Util::skew (const ArrayXf &v)
	calculate skew More...
float	FT::Util::kurtosis (const ArrayXf &v)
	calculate kurtosis More...
float	FT::Util::covariance (const ArrayXf &x, const ArrayXf &y)
	covariance of x and y More...
float	FT::Util::slope (const ArrayXf &x, const ArrayXf &y)
	slope of x/y More...
float	FT::Util::pearson_correlation (const ArrayXf &x, const ArrayXf &y)
	the normalized covariance of x and y More...
float	FT::Util::mad (const ArrayXf &x)
	median absolute deviation More...
template<typename T >
vector< size_t >	FT::Util::argsort (const vector< T > &v, bool ascending=true)
	return indices that sort a vector More...
template<typename T >
vector< T >	FT::Util::softmax (const vector< T > &w)
	return the softmax transformation of a vector. More...
ArrayXb	FT::Util::isinf (const ArrayXf &x)
	returns true for elements of x that are infinite More...
ArrayXb	FT::Util::isnan (const ArrayXf &x)
	returns true for elements of x that are NaN More...
vector< char >	FT::Util::find_dtypes (const MatrixXf &X)
	determines data types of columns of matrix X. More...
template<typename T >
vector< T >	FT::Util::unique (vector< T > w)
	returns unique elements in vector More...
template<typename T >
vector< T >	FT::Util::unique (Matrix< T, -1, -1 > w)
	returns unique elements in Eigen matrix of variable rows/cols More...
template<typename T >
vector< T >	FT::Util::unique (Matrix< T, -1, 1 > w)
	returns unique elements in Eigen vector More...
template<typename T >
vector< T >	FT::Util::unique (Array< T, -1, 1 > w)
	returns unique elements in 1d Eigen array More...
float	FT::Util::condition_number (const MatrixXf &X)
	returns the condition number of a matrix. More...
MatrixXf	FT::Util::corrcoef (const MatrixXf &X)
	returns the pearson correlation coefficients of matrix. More...
float	FT::Util::mean_square_corrcoef (const MatrixXf &X)
int	FT::Util::argmiddle (vector< float > &v)
	returns the (first) index of the element with the middlest value in v More...
	FT::Util::NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE (Log_Stats, generation, time, min_loss, min_loss_v, med_loss, med_loss_v, med_size, med_complexity, med_num_params, med_dim)
template<typename T >
std::string	FT::Util::to_string (const T &value)
	template function to convert objects to string for logging More...
template<typename T >
std::string	FT::Util::to_string (const T a_value, const int n)
std::string	FT::Util::ravel (const vector< string > &v, string sep=",")
	takes a vector string and returns it as a delimited string. More...