class holding the data for a node in a tree. More...

#include <node.h>

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Public Types
using	HashTuple
	tuple type for hashing

Public Member Functions
	Node ()=default

template<typename S>
	Node (NodeType type, S signature, bool weighted=false, string feature_name="") noexcept
	Constructor used by search space.

template<typename S>
void	set_signature ()

void	init ()

string	get_name (bool include_weight=true) const noexcept
	gets a string version of the node for printing.

string	get_model (const vector< string > &) const noexcept

DataType	get_ret_type () const

std::size_t	args_type () const

auto	get_arg_types () const

size_t	get_arg_count () const

size_t	get_node_hash (bool include_const=true) const

auto	operator== (const Node &rhs) const noexcept -> bool

auto	operator!= (const Node &rhs) const noexcept -> bool

auto	operator< (const Node &rhs) const noexcept -> bool

auto	operator<= (const Node &rhs) const noexcept -> bool

auto	operator> (const Node &rhs) const noexcept -> bool

auto	operator>= (const Node &rhs) const noexcept -> bool

float	get_prob_change () const

void	set_prob_change (float w)

float	get_prob_keep () const

void	set_feature (string f)

string	get_feature () const

void	set_feature_type (DataType ft)

DataType	get_feature_type () const

void	set_keep_split_feature (bool keep)

bool	get_keep_split_feature () const

bool	get_is_weighted () const

void	set_is_weighted (bool is_weighted)

Public Attributes
string	name
	full name of the node, with types

NodeType	node_type
	the node type

DataType	ret_type
	return data type

std::vector< DataType >	arg_types
	argument data types

std::size_t	sig_hash
	a hash of the signature

std::size_t	sig_dual_hash
	a hash of the dual of the signature (for NLS)

bool	fixed
	whether the node is replaceable. Weights are still optimized.

bool	is_weighted
	whether this node is weighted (ignored in nodes that must have weights, such as meanLabel, constants, splits)

float	prob_change
	chance of node being selected for variation

float	W
	the weights of the node. also used for splitting thresholds.

bool	center_op
	whether to center the operator in pretty printing

string	feature
	feature name for terminals or splitting nodes

DataType	feature_type = DataType::ArrayF
	feature type for terminals or splitting nodes

bool	keep_split_feature = false
	fix the SplitBest feature when the node is fixed

Detailed Description

class holding the data for a node in a tree.

Definition at line 84 of file node.h.

Member Typedef Documentation

◆ HashTuple

using Brush::Node::HashTuple

Initial value:

 std::tuple< 
        UnderlyingNodeType,     
        size_t,                 
        bool,                   
        string,                 
        bool,                   
        int                     
        
    >

tuple type for hashing

Definition at line 115 of file node.h.

Constructor & Destructor Documentation

◆ Node() [1/2]

Brush::Node::Node ( )

default

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◆ Node() [2/2]

template<typename S>

Brush::Node::Node	(	NodeType	type,
		S	signature,
		bool	weighted = false,
		string	feature_name = "" )

inlineexplicitnoexcept

Constructor used by search space.

Template Parameters

S signature

Parameters

type	node type
feature_name	name of the terminal
signature	signature

Definition at line 134 of file node.h.

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Member Function Documentation

◆ args_type()

std::size_t Brush::Node::args_type ( ) const

inline

Definition at line 180 of file node.h.

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◆ get_arg_count()

size_t Brush::Node::get_arg_count ( ) const

inline

Definition at line 182 of file node.h.

◆ get_arg_types()

auto Brush::Node::get_arg_types ( ) const

inline

Definition at line 181 of file node.h.

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◆ get_feature()

string Brush::Node::get_feature ( ) const

inline

Definition at line 259 of file node.h.

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◆ get_feature_type()

DataType Brush::Node::get_feature_type ( ) const

inline

Definition at line 262 of file node.h.

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◆ get_is_weighted()

bool Brush::Node::get_is_weighted ( ) const

inline

Definition at line 269 of file node.h.

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◆ get_keep_split_feature()

bool Brush::Node::get_keep_split_feature ( ) const

inline

Definition at line 265 of file node.h.

◆ get_model()

string Brush::Node::get_model ( const vector< string > & children ) const

noexcept

Definition at line 52 of file node.cpp.

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◆ get_name()

auto Brush::Node::get_name ( bool include_weight = true ) const

noexcept

gets a string version of the node for printing.

get the name of the node.

Parameters

include_weight whether to include the node's weight in the output.

Returns: string version of the node.; name

Definition at line 20 of file node.cpp.

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◆ get_node_hash()

size_t Brush::Node::get_node_hash ( bool include_const = true ) const

inline

Definition at line 196 of file node.h.

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◆ get_prob_change()

float Brush::Node::get_prob_change ( ) const

inline

Definition at line 254 of file node.h.

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◆ get_prob_keep()

float Brush::Node::get_prob_keep ( ) const

inline

Definition at line 256 of file node.h.

◆ get_ret_type()

DataType Brush::Node::get_ret_type ( ) const

inline

Definition at line 179 of file node.h.

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◆ init()

void Brush::Node::init ( )

inline

Definition at line 157 of file node.h.

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◆ operator!=()

auto Brush::Node::operator!= ( const Node & rhs ) const -> bool

inlinenoexcept

Definition at line 224 of file node.h.

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◆ operator<()

auto Brush::Node::operator< ( const Node & rhs ) const -> bool

inlinenoexcept

Definition at line 229 of file node.h.

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◆ operator<=()

auto Brush::Node::operator<= ( const Node & rhs ) const -> bool

inlinenoexcept

Definition at line 236 of file node.h.

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◆ operator==()

auto Brush::Node::operator== ( const Node & rhs ) const -> bool

inlinenoexcept

Definition at line 213 of file node.h.

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◆ operator>()

auto Brush::Node::operator> ( const Node & rhs ) const -> bool

inlinenoexcept

Definition at line 241 of file node.h.

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◆ operator>=()

auto Brush::Node::operator>= ( const Node & rhs ) const -> bool

inlinenoexcept

Definition at line 246 of file node.h.

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◆ set_feature()

void Brush::Node::set_feature ( string f )

inline

Definition at line 258 of file node.h.

◆ set_feature_type()

void Brush::Node::set_feature_type ( DataType ft )

inline

Definition at line 261 of file node.h.

◆ set_is_weighted()

void Brush::Node::set_is_weighted ( bool is_weighted )

inline

Definition at line 274 of file node.h.

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◆ set_keep_split_feature()

void Brush::Node::set_keep_split_feature ( bool keep )

inline

Definition at line 264 of file node.h.

◆ set_prob_change()

void Brush::Node::set_prob_change ( float w )

inline

Definition at line 255 of file node.h.

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◆ set_signature()

template<typename S>

void Brush::Node::set_signature ( )

inline

Definition at line 148 of file node.h.

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Member Data Documentation

◆ arg_types

std::vector<DataType> Brush::Node::arg_types

argument data types

Definition at line 94 of file node.h.

◆ center_op

bool Brush::Node::center_op

whether to center the operator in pretty printing

Definition at line 110 of file node.h.

◆ feature

string Brush::Node::feature

feature name for terminals or splitting nodes

Definition at line 281 of file node.h.

◆ feature_type

DataType Brush::Node::feature_type = DataType::ArrayF

feature type for terminals or splitting nodes

Definition at line 284 of file node.h.

◆ fixed

bool Brush::Node::fixed

whether the node is replaceable. Weights are still optimized.

Definition at line 101 of file node.h.

◆ is_weighted

bool Brush::Node::is_weighted

whether this node is weighted (ignored in nodes that must have weights, such as meanLabel, constants, splits)

Definition at line 103 of file node.h.

◆ keep_split_feature

bool Brush::Node::keep_split_feature = false

fix the SplitBest feature when the node is fixed

Definition at line 287 of file node.h.

◆ name

string Brush::Node::name

full name of the node, with types

Definition at line 87 of file node.h.

◆ node_type

NodeType Brush::Node::node_type

the node type

Definition at line 89 of file node.h.

◆ prob_change

float Brush::Node::prob_change

chance of node being selected for variation

Definition at line 105 of file node.h.

◆ ret_type

DataType Brush::Node::ret_type

return data type

Definition at line 92 of file node.h.

◆ sig_dual_hash

std::size_t Brush::Node::sig_dual_hash

a hash of the dual of the signature (for NLS)

Definition at line 98 of file node.h.

◆ sig_hash

std::size_t Brush::Node::sig_hash

a hash of the signature

Definition at line 96 of file node.h.

◆ W

float Brush::Node::W

the weights of the node. also used for splitting thresholds.

Definition at line 107 of file node.h.

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

Public Types

Public Member Functions

Public Attributes

Detailed Description

Member Typedef Documentation

◆ HashTuple

Constructor & Destructor Documentation

◆ Node() [1/2]

◆ Node() [2/2]

Member Function Documentation

◆ args_type()

◆ get_arg_count()

◆ get_arg_types()

◆ get_feature()

◆ get_feature_type()

◆ get_is_weighted()

◆ get_keep_split_feature()

◆ get_model()

◆ get_name()

◆ get_node_hash()

◆ get_prob_change()

◆ get_prob_keep()

◆ get_ret_type()

◆ init()

◆ operator!=()

◆ operator<()

◆ operator<=()

◆ operator==()

◆ operator>()

◆ operator>=()

◆ set_feature()

◆ set_feature_type()

◆ set_is_weighted()

◆ set_keep_split_feature()

◆ set_prob_change()

◆ set_signature()

Member Data Documentation

◆ arg_types

◆ center_op

◆ feature

◆ feature_type

◆ fixed

◆ is_weighted

◆ keep_split_feature

◆ name

◆ node_type

◆ prob_change

◆ ret_type

◆ sig_dual_hash

◆ sig_hash

◆ W