tesseract::LanguageModelNgramInfo Struct Reference

#include <lm_state.h>

List of all members.

Public Member Functions
	LanguageModelNgramInfo (const char *c, int l, bool p, float nc, float ncc)
Public Attributes
STRING	context
int	context_unichar_step_len
bool	pruned
float	ngram_cost
	-ln(P_ngram_model(path))
float	ngram_and_classifier_cost
	-[ ln(P_classifier(path)) + scale_factor * ln(P_ngram_model(path)) ]

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Detailed Description

Struct for storing additional information used by Ngram language model component.

Definition at line 74 of file lm_state.h.

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Constructor & Destructor Documentation

tesseract::LanguageModelNgramInfo::LanguageModelNgramInfo	(	const char *	c,
		int	l,
		bool	p,
		float	nc,
		float	ncc
	)		[inline]

Definition at line 75 of file lm_state.h.

    : context(c), context_unichar_step_len(l), pruned(p), ngram_cost(nc),
      ngram_and_classifier_cost(ncc) {}

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Member Data Documentation

STRING tesseract::LanguageModelNgramInfo::context

Definition at line 78 of file lm_state.h.

int tesseract::LanguageModelNgramInfo::context_unichar_step_len

Length of the context measured by advancing using UNICHAR::utf8_step() (should be at most the order of the character ngram model used).

Definition at line 81 of file lm_state.h.

float tesseract::LanguageModelNgramInfo::ngram_and_classifier_cost

-[ ln(P_classifier(path)) + scale_factor * ln(P_ngram_model(path)) ]

Definition at line 90 of file lm_state.h.

float tesseract::LanguageModelNgramInfo::ngram_cost

-ln(P_ngram_model(path))

Definition at line 88 of file lm_state.h.

bool tesseract::LanguageModelNgramInfo::pruned

The paths with pruned set are pruned out from the perspective of the character ngram model. They are explored further because they represent a dictionary match or a top choice. Thus ngram_info is still computed for them in order to calculate the combined cost.

Definition at line 86 of file lm_state.h.

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

• wordrec/lm_state.h