C# Class Lucene.Net.Search.Spell.NGramDistance

N-Gram version of edit distance based on paper by Grzegorz Kondrak, "N-gram similarity and distance". Proceedings of the Twelfth International Conference on String Processing and Information Retrieval (SPIRE 2005), pp. 115-126, Buenos Aires, Argentina, November 2005. http://www.cs.ualberta.ca/~kondrak/papers/spire05.pdf This implementation uses the position-based optimization to compute partial matches of n-gram sub-strings and adds a null-character prefix of size n-1 so that the first character is contained in the same number of n-grams as a middle character. Null-character prefix matches are discounted so that strings with no matching characters will return a distance of 0.

Inheritance: IStringDistance

显示文件 Open project: apache/lucenenet Class Usage Examples

Public Methods

Method	Description
Equals ( object obj ) : bool
GetDistance ( string source, string target ) : float
GetHashCode ( ) : int
NGramDistance ( ) : System	Creates an N-Gram distance measure using n-grams of size 2.
NGramDistance ( int size ) : System	Creates an N-Gram distance measure using n-grams of the specified size.
ToString ( ) : string

Method Details

Equals() public method

public Equals ( object obj ) : bool
obj	object
return	bool

GetDistance() public method

public GetDistance ( string source, string target ) : float
source	string
target	string
return	float

GetHashCode() public method

public GetHashCode ( ) : int
return	int

NGramDistance() public method

Creates an N-Gram distance measure using n-grams of size 2.

public NGramDistance ( ) : System
return	System

NGramDistance() public method

Creates an N-Gram distance measure using n-grams of the specified size.

public NGramDistance ( int size ) : System
size	int	The size of the n-gram to be used to compute the string distance.
return	System

ToString() public method

public ToString ( ) : string
return	string