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The following page has been changed by GrantIngersoll: http://wiki.apache.org/solr/SpellCheckingAnalysis New page: = Introduction = Analysis is a very important factor in spell checking. Stemming and other techniques that change tokens is not recommended since it will result in giving stems as suggestions. Instead, you should use a very minimal tokenization/analysis process like the !StandardAnalyzer or even the !WhitespaceTokenizer plus a simple lower casing filter and a filter that removes apostrophes and the like. As with most things in search, there are always tradeoffs and you should evaluate the results in your application. That being said, a common configuration for spell checking is: {{{ <fieldType name="spell" class="solr.TextField" positionIncrementGap="100"> <analyzer type="index"> <tokenizer class="solr.StandardTokenizerFactory"/> <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt"/> <filter class="solr.StandardFilterFactory"/> <filter class="solr.RemoveDuplicatesTokenFilterFactory"/> </analyzer> <analyzer type="query"> <tokenizer class="solr.StandardTokenizerFactory"/> <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt" ignoreCase="true" expand="true"/> <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt"/> <filter class="solr.StandardFilterFactory"/> <filter class="solr.RemoveDuplicatesTokenFilterFactory"/> </analyzer> </fieldType> }}} Use a <copyField> to divert your main text fields to the spell field and then configure your spell checker to use the "spell" field to derive the spelling index.
