moot::mootNgrams Class Reference

Class for storage & retrieval of raw N-Gram frequencies.

Classes
class	BigramEntry
class	Ngram
class	UnigramEntry

Public Types
typedef CountT	NgramCount
typedef map< mootTagString, NgramCount >	TrigramTable
typedef map< mootTagString, BigramEntry >	BigramTable
typedef map< mootTagString, UnigramEntry >	NgramTable

Public Member Functions
	mootNgrams (void)
	~mootNgrams ()
void	clear (void)
size_t	n_unigrams (void) const
size_t	n_bigrams (void) const
size_t	n_trigrams (void) const
void	add_count (const mootTagString &tag, const NgramCount count)
void	add_count (const mootTagString &tag1, const mootTagString &tag2, const NgramCount count)
void	add_count (const mootTagString &tag1, const mootTagString &tag2, const mootTagString &tag3, const NgramCount count)
void	add_count (const Ngram &ngram, const NgramCount count)
void	add_counts (const Ngram &ngram, const NgramCount count)
const NgramCount	lookup (const mootTagString &tag) const
const NgramCount	lookup (const mootTagString &tag1, const mootTagString &tag2) const
const NgramCount	lookup (const mootTagString &tag1, const mootTagString &tag2, const mootTagString &tag3) const
bool	load (const char *filename)
bool	load (FILE *file, const char *filename=__null)
bool	save (const char *filename, bool compact=false)
bool	save (FILE *file, const char *filename=__null, bool compact=false)

Public Attributes
NgramTable	ngtable
NgramCount	ugtotal

Member Typedef Documentation

NgramCount

typedef CountT moot::mootNgrams::NgramCount

Type for an N-Gram count

TrigramTable

typedef map<mootTagString,NgramCount> moot::mootNgrams::TrigramTable

Type for tertiary (tag->trigramCount) lookup-table entry

BigramTable

typedef map<mootTagString,BigramEntry> moot::mootNgrams::BigramTable

Type for secondary lookup table

NgramTable

typedef map<mootTagString,UnigramEntry> moot::mootNgrams::NgramTable

Type for primary lookup-table

Constructor & Destructor Documentation

mootNgrams()

moot::mootNgrams::mootNgrams ( void  )

inline

Default constructor

~mootNgrams()

moot::mootNgrams::~mootNgrams ( )

inline

Default destructor

References clear().

Member Function Documentation

clear()

void moot::mootNgrams::clear ( void  )

inline

Clear the ngrams object

Referenced by moot::mootHMMTrainer::clear(), ~mootNgrams(), and moot::mootNgrams::Ngram::~Ngram().

n_unigrams()

size_t moot::mootNgrams::n_unigrams ( void  ) const

inline

Return the number of distinct stored unigrams

References n_bigrams(), and n_trigrams().

n_bigrams()

size_t moot::mootNgrams::n_bigrams

(

void

)

const

Return the number of distinct stored bigrams

Referenced by n_unigrams().

n_trigrams()

size_t moot::mootNgrams::n_trigrams

(

void

)

const

Return the number of distinct stored trigrams

Referenced by n_unigrams().

add_count() [1/4]

void moot::mootNgrams::add_count ( const mootTagString &  tag, const NgramCount  count  )

inline

Add count to the current count for unigram <tag>.

References moot::mootNgrams::BigramEntry::count.

Referenced by add_count().

add_count() [2/4]

void moot::mootNgrams::add_count ( const mootTagString &  tag1, const mootTagString &  tag2, const NgramCount  count  )

inline

Add count to the current count for bigram <tag1, tag2> Does NOT add any unigram counts.

References moot::mootNgrams::BigramEntry::count.

add_count() [3/4]

void moot::mootNgrams::add_count ( const mootTagString &  tag1, const mootTagString &  tag2, const mootTagString &  tag3, const NgramCount  count  )

inline

Add count to the current count for trigram <tag1, tag2, tag3> Does NOT add any bigram or unigram counts.

References moot::mootNgrams::BigramEntry::count.

add_count() [4/4]

void moot::mootNgrams::add_count ( const Ngram &  ngram, const NgramCount  count  )

inline

Add count to the current count for ngram – length-dependent.

References add_count(), and moot::mootNgrams::BigramEntry::count.

add_counts()

void moot::mootNgrams::add_counts ( const Ngram &  ngram, const NgramCount  count  )

inline

Add count to the current count for <tag1>, <tag1,tag2>, and <tag1,tag2,tag3> in ngram.... ngram may be shorter than 3 tags, in which case counts are only added for the elements present.

References moot::mootNgrams::BigramEntry::BigramEntry(), moot::mootNgrams::BigramEntry::count, moot::mootNgrams::Ngram::tag1(), moot::mootNgrams::Ngram::tag2(), and moot::mootNgrams::Ngram::tag3().

lookup() [1/3]

const NgramCount moot::mootNgrams::lookup ( const mootTagString &  tag ) const

inline

Returns current count for unigram, returns 0 if unknown

lookup() [2/3]

const NgramCount moot::mootNgrams::lookup ( const mootTagString &  tag1, const mootTagString &  tag2  ) const

inline

Returns current count for bigram <tag1,tag2>, returns 0 if unknown

lookup() [3/3]

const NgramCount moot::mootNgrams::lookup ( const mootTagString &  tag1, const mootTagString &  tag2, const mootTagString &  tag3  ) const

inline

Returns current count for trigram <tag1,tag2,tag3>, returns 0 if unknown

References load(), and save().

load() [1/2]

bool moot::mootNgrams::load

(

const char *

filename

)

Load n-grams from a TnT-style parameter file

Referenced by lookup().

load() [2/2]

bool moot::mootNgrams::load	(	FILE *	file,
		const char *	filename = __null
	)

Load n-grams from a TnT-style parameter file (stream version)

save() [1/2]

bool moot::mootNgrams::save	(	const char *	filename,
		bool	compact = false
	)

Save n-grams to a TnT-style paramater file

Referenced by lookup().

save() [2/2]

bool moot::mootNgrams::save	(	FILE *	file,
		const char *	filename = __null,
		bool	compact = false
	)

Save n-grams to a TnT-style paramater file (stream version)

Member Data Documentation

ngtable

NgramTable moot::mootNgrams::ngtable

N-Gram to count lookup table

ugtotal

NgramCount moot::mootNgrams::ugtotal

total number of unigrams

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

• mootNgrams.h