Package opennlp.tools.ml.maxent.quasinewton

Klasse LineSearch

java.lang.Object

opennlp.tools.ml.maxent.quasinewton.LineSearch

public class LineSearch
extends Object

Class that performs line search to find minimum.

Verschachtelte Klassen - Übersicht

Verschachtelte Klassen

Modifizierer und Typ	Klasse	Beschreibung
static class	LineSearch.LineSearchResult	Represents a LineSearch result.

Konstruktorübersicht

Konstruktoren

Konstruktor	Beschreibung
LineSearch()

Methodenübersicht

Modifizierer und Typ	Methode	Beschreibung
static void	doConstrainedLineSearch(Function function, double[] direction, LineSearch.LineSearchResult lsr, double l1Cost, double initialStepSize)	Conducts a constrained line search (see section 3.2 in the paper "Scalable Training of L1-Regularized Log-Linear Models", Andrew et al. 2007)
static void	doLineSearch(Function function, double[] direction, LineSearch.LineSearchResult lsr, double initialStepSize)	Conducts a backtracking line search (see Nocedal & Wright 2006, Numerical Optimization, p. 37).

Von Klasse geerbte Methoden java.lang.Object

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

Konstruktordetails

LineSearch

public LineSearch()

Methodendetails

doLineSearch

public static void doLineSearch(Function function,
 double[] direction,
 LineSearch.LineSearchResult lsr,
 double initialStepSize)

Conducts a backtracking line search (see Nocedal & Wright 2006, Numerical Optimization, p. 37).

doConstrainedLineSearch

public static void doConstrainedLineSearch(Function function,
 double[] direction,
 LineSearch.LineSearchResult lsr,
 double l1Cost,
 double initialStepSize)

Conducts a constrained line search (see section 3.2 in the paper "Scalable Training of L1-Regularized Log-Linear Models", Andrew et al. 2007)