Namespace Lucene.Net.Analysis.Ru

Analyzer for Russian.

Classes

RussianAnalyzer

Lucene.Net.Analysis.Analyzer for Russian language.

Supports an external list of stopwords (words that will not be indexed at all). A default set of stopwords is used unless an alternative list is specified.

You must specify the required Lucene.Net.Util.LuceneVersion compatibility when creating RussianAnalyzer:

As of 3.1, StandardTokenizer is used, Snowball stemming is done with SnowballFilter, and Snowball stopwords are used by default.

RussianLetterTokenizer

A RussianLetterTokenizer is a Lucene.Net.Analysis.Tokenizer that extends LetterTokenizer by also allowing the basic Latin digits 0-9.

You must specify the required Lucene.Net.Util.LuceneVersion compatibility when creating RussianLetterTokenizer:

As of 3.1, CharTokenizer uses an int based API to normalize and detect token characters. See IsTokenChar(Int32) and Normalize(Int32) for details.

RussianLightStemFilter

A Lucene.Net.Analysis.TokenFilter that applies RussianLightStemmer to stem Russian words.

To prevent terms from being stemmed use an instance of SetKeywordMarkerFilter or a custom Lucene.Net.Analysis.TokenFilter that sets the Lucene.Net.Analysis.TokenAttributes.KeywordAttribute before this Lucene.Net.Analysis.TokenStream.

RussianLightStemFilterFactory

Factory for RussianLightStemFilter.

<fieldType name="text_rulgtstem" class="solr.TextField" positionIncrementGap="100">
  <analyzer>
    <tokenizer class="solr.StandardTokenizerFactory"/>
    <filter class="solr.LowerCaseFilterFactory"/>
    <filter class="solr.RussianLightStemFilterFactory"/>
  </analyzer>
</fieldType>

RussianLightStemmer

Light Stemmer for Russian.

This stemmer implements the following algorithm: Indexing and Searching Strategies for the Russian Language. Ljiljana Dolamic and Jacques Savoy.