com.hankcs.hanlp.model.crf.crfpp

Class Node

java.lang.Object

com.hankcs.hanlp.model.crf.crfpp.Node

public class Node
extends Object

图模型中的节点

Author:

zhifac

Field Summary

Fields

Modifier and Type	Field and Description
double	alpha
double	bestCost
double	beta
double	cost
List<Integer>	fVector
static double	LOG2
List<Path>	lpath
static int	MINUS_LOG_EPSILON
Node	prev
List<Path>	rpath
int	x
int	y

Constructor Summary

Constructors

Constructor and Description
Node()

Method Summary

Modifier and Type	Method and Description
void	calcAlpha()
void	calcBeta()
void	calcExpectation(double[] expected, double Z, int size) 计算节点期望
void	clear()
static double	logsumexp(double x, double y, boolean flg)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

x

public int x

y

public int y

alpha

public double alpha

beta

public double beta

cost

public double cost

bestCost

public double bestCost

prev

public Node prev

fVector

public List<Integer> fVector

lpath

public List<Path> lpath

rpath

public List<Path> rpath

LOG2

public static double LOG2

MINUS_LOG_EPSILON

public static int MINUS_LOG_EPSILON

Constructor Detail

Node

public Node()

Method Detail

logsumexp

public static double logsumexp(double x,
                               double y,
                               boolean flg)

calcAlpha

public void calcAlpha()

calcBeta

public void calcBeta()

calcExpectation

public void calcExpectation(double[] expected,
                            double Z,
                            int size)

计算节点期望

Parameters:

expected - 输出期望

Z - 规范化因子

size - 标签个数

clear

public void clear()