For use with dtSearch version 6.5 or later.

dtSearch Engine/Web is supplied with stemming rules and a noise-word file for English(US). Stemming is the only search expansion option which is 'on' by default in the dtSearch end-user products; the reason for this is that stemming is almost always useful when making a search, and adds little to the time required to make a search. Unlike some other search engines, dtSearch applies stemming at search time, there is no need to build indexes specifically to apply stemming and no need to build separate indices for each language in use.

The problem
With the stemming option selected dtSearch will find plurals and many other variations; for example a search on print will find printers, printing, printed automatically. However, if you are searching documents written in other languages, the English stemming rules will cause you to miss many word variations which do not occur in English (e.g. verb and noun changes with gender), and you may find that words which are unrelated are found in error.

Furthermore, the English noise word list, which is designed to remove unwanted English words from your index to keep the index size small, is not suitable for other languages; your indexes may contain many words which will not be useful in searches and which will add to the size of your indexes.

The solution
Use language specific files in place of the default US English files. These are supplied in the form of Language Extension Packs which contain files for many languages, see list below. All files are in Unicode format.

Language Extension Packs

Order Code LEP400 LEP402 LEP403 Western European Danish   Dutch   English   Finnish   French*   German*   Italian   Norwegian   Portuguese   Spanish   Swedish   Eastern European Belarusian   Bosnian   Bulgarian   Croatian   Czech   Estonian   Greek   Hungarian   Latvian   Lithuanian   Polish   Romanian   Russian   Serbian   Slovak   Slovenian   Turkish   Ukrainian

* LEP400 and LEP402 also include unique bi-lingual French/English and German/English stemming and noise word files which enables search expansion on indexes and documents containing a mix of French/German and English text.

• Stemming rule files and noise word files for each supported language
• Test files to check the operation of stemming in all the supplied languages.
  
• Stemming Language Selector application, changes stemming rules from the Windows Start menu*.
  
• Multilingual Installer (English, French, Spanish, German, Dutch)
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• One year of on-line technical support and updates.
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  *User must have administrator permissions
  

• dtSearch 6.5 or later (License covers use with dtSearch Engine or Web on a single server, or dtSearch Desktop\Network for up to 5 users); other licensing available.
  
• Needs Windows 2000, XP, Vista, 2003/2008
  
• Supplied on CDROM