vita::variable Class Reference

Represents an input argument (feature) for a symbolic regression or classification problem. More...

#include <variable.h>

Inherits vita::terminal.

Public Member Functions
std::string	display (terminal_param_t, format) const final
value_t	eval (symbol_params &p) const override
bool	input () const override
	An input variable is a feature from the learning domain. More...
	variable (const std::string &name, unsigned var_id, category_t t=0)
Public Member Functions inherited from vita::terminal
unsigned	arity () const final
virtual std::string	display (terminal_param_t, format=c_format) const
virtual terminal_param_t	init () const
	Used to initialize the internal parameter of the terminal. More...
virtual bool	parametric () const
	A parametric terminal needs an additional parameter to be evaluated. More...
	symbol (const std::string &, category_t=0)
Public Member Functions inherited from vita::symbol
virtual unsigned	arity () const =0
category_t	category () const
	The type (a.k.a. More...
void	category (category_t)
	Changes the category of a symbol. More...
virtual value_t	eval (symbol_params &) const =0
	Calculates the value of / performs the action associated with the symbol (it's implementation specific). More...
virtual bool	input () const
	An input variable is a feature from the learning domain. More...
virtual bool	is_valid () const
std::string	name () const
opcode_t	opcode () const
	An opcode is a unique, numerical session ID for a symbol. More...
double	penalty (core_interpreter *) const
	Used for automatic calculation of penalities due to broken constraints. More...
	symbol (const std::string &, category_t=0)
bool	terminal () const

Additional Inherited Members
Public Types inherited from vita::symbol
enum	format {   c_format , cpp_format , mql_format , python_format ,   sup_format }
	Symbol rendering format. More...
Static Public Member Functions inherited from vita::terminal
static const terminal *	cast (const symbol *)
	This is a short cut function. More...

Detailed Description

Represents an input argument (feature) for a symbolic regression or classification problem.

Definition at line 26 of file variable.h.

Constructor & Destructor Documentation

variable()

vita::variable::variable ( const std::string &  name, unsigned  var_id, category_t  t = 0  )

inline

Definition at line 29 of file variable.h.

Member Function Documentation

display()

std::string vita::variable::display ( terminal_param_t  , format    ) const

inlinefinalvirtual

Returns

the name of the variable

Reimplemented from vita::terminal.

Definition at line 36 of file variable.h.

eval()

value_t vita::variable::eval ( symbol_params &  p ) const

inlineoverridevirtual

Returns

the value of the variable

Note

Requires a src_interpreter to work.

Implements vita::symbol.

Definition at line 41 of file variable.h.

input()

bool vita::variable::input ( ) const

inlineoverridevirtual

An input variable is a feature from the learning domain.

Returns

true if the symbol is an input variable

Only a terminal can be an input variable.

Default (safe) value is false.

Reimplemented from vita::symbol.

Definition at line 33 of file variable.h.

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

• variable.h