NGramCounter Class Reference

Class for storing counts for a set of n-grams. More...

#include <util.H>

List of all members.

Public Member Functions
	NGramCounter ()
	Ctor; initializes object to be empty.
void	write (ostream &outStrm, const SymbolTable &symTable=SymbolTable()) const
	Writes all counts to stream outStrm in a text format.
void	clear ()
	Clears object; deletes all n-grams in table.
unsigned	size () const
	Returns number of n-grams in table.
bool	empty () const
	Returns whether object is empty.
unsigned	incr_count (const vector< int > &ngram)
	Increments count of an n-gram; returns new count.
void	set_count (const vector< int > &ngram, unsigned val)
	Sets count of an n-gram to val.
unsigned	get_count (const vector< int > &ngram) const
	Returns count of an n-gram, or 0 if not present.

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Detailed Description

Class for storing counts for a set of n-grams.

N-grams are represented as vectors of integers. The main access methods are incr_count(), set_count(), and get_count().

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Constructor & Destructor Documentation

NGramCounter::NGramCounter

(

)

[inline]

Ctor; initializes object to be empty.

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Member Function Documentation

void NGramCounter::write	(	ostream &	outStrm,
		const SymbolTable &	symTable = SymbolTable()
	)			const

Writes all counts to stream outStrm in a text format.

Uses symTable to map integer indices to strings, if present.

void NGramCounter::clear

(

)

[inline]

Clears object; deletes all n-grams in table.

unsigned NGramCounter::size

(

)

const [inline]

Returns number of n-grams in table.

bool NGramCounter::empty

(

)

const [inline]

Returns whether object is empty.

unsigned NGramCounter::incr_count

(

const vector< int > &

ngram

)

[inline]

Increments count of an n-gram; returns new count.

void NGramCounter::set_count	(	const vector< int > &	ngram,
		unsigned	val
	)			[inline]

Sets count of an n-gram to val.

If val is 0, n-gram is removed from table.

unsigned NGramCounter::get_count

(

const vector< int > &

ngram

)

const [inline]

Returns count of an n-gram, or 0 if not present.

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

• util.H