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Bug#311795: ITP: rast -- A full text search system


> >   * N-gram based indexing; No dictionaries are needed
> >   * Support many types of documents; e.g. HTML, MS Word
> >   * Includes library for some programming languages
> >   * Add text incrementally
> Could you please explain what is N-gram and what is this package useful
> for?

N-gram is when you use n-characters as a 'word'.

In some languages including Japanese, it is impossible to 
determine a 'word', and N-gram is a method that defines a 
'word' as n-characters.


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