tesseract::LanguageModelNgramInfo Struct Reference

#include <lm_state.h>

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)) More...
float	ngram_and_classifier_cost
	-[ ln(P_classifier(path)) + scale_factor * ln(P_ngram_model(path)) ] More...

Detailed Description

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

Definition at line 72 of file lm_state.h.

Constructor & Destructor Documentation

LanguageModelNgramInfo()

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

inline

Definition at line 73 of file lm_state.h.

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

Member Data Documentation

context

STRING tesseract::LanguageModelNgramInfo::context

Definition at line 76 of file lm_state.h.

context_unichar_step_len

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 79 of file lm_state.h.

ngram_and_classifier_cost

float tesseract::LanguageModelNgramInfo::ngram_and_classifier_cost

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

Definition at line 88 of file lm_state.h.

ngram_cost

float tesseract::LanguageModelNgramInfo::ngram_cost

-ln(P_ngram_model(path))

Definition at line 86 of file lm_state.h.

pruned

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 84 of file lm_state.h.

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

• /usr/src/tesseract-ocr.master/src/wordrec/lm_state.h