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Presented by Christoph Goller, Chief Scientist, IntraFind Software AG
If you want to search in a multilingual environment with high-quality language-specific word-normalization, if you want to handle mixed-language documents, if you want to add phonetic search for names if you need a semantic search which distinguishes between a search for the color "brown" and a person with the second name "brown", in all these cases you have to deal with different types of terms. I will show why it makes much more sense to attach types (prefixes) to Lucene terms instead of relying on different fields or even different indexes for different kinds of terms. Furthermore I will show how queries to such a typed index look and why e.g. SpanQueries are needed to correctly treat compound words and phrases or realize a reasonable phonetic search. The Analyzers and the QueryParser described are available as plugins for Lucene, Solr, and elasticsearch.
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