dtSearch is a Unicode Consortium Official Gold Sponsor of two Unicode search symbols.


Unicode Support

Language-Neutral Search Options

Over 25 European Languages: Stemming Rules and Noise Word Lists

  • Currently dtSearch products include stemming rules (for finding grammatical variations on words during searches) and a noise word list for English-language text.
  • Beginning with version 2022.02, dtSearch products will include an option to select stemming rules at the time of search for over 25 European languages. dtSearch products will also include an option to select the noise word list for over 25 European languages prior to building an index. (The noise word list is "hard-wired" into an index. Adjusting the noise word list for a different language can be helpful if you are indexing a large collection of data in a particular language.)
  • Please contact dtSearch (sales@dtsearch.com) if you would like to try a beta version containing these features.

Chinese, Japanese and Korean Text With No Word Breaks

  • Some Chinese, Japanese, and Korean text does not include word breaks. Instead, the text appears as lines of characters with no spaces between the words.
  • Because there are no spaces separating the words on each line, dtSearch sees each line of text as a single long word.
  • To make this type of text searchable, enable automatic insertion of word breaks around Chinese, Japanese, and Korean characters, so each character will be treated as single word.
  • dtSearch Desktop/Network: In Options > Preferences > Letters and Words, check the box to “Insert word breaks between Chinese, Japanese, and Korean characters in text.”
  • dtSearch Developer API: set dtsoTfAutoBreakCJK in Options.TextFlags.

Language Analyzer API Integration

  • In addition to the extensive alphabet customization options available across the dtSearch product line, the dtSearch Engine also includes a Language Analyzer API that can be used to integrate morphological analyzers and custom or dictionary-based word breakers into the dtSearch Engine indexing process.
  • The dtSearch Engine also includes an API for substituting a non-English language thesaurus for the existing English-language one.

Basis Technology’s Rosette® Linguistics Platform Integration

  • The Rosette Linguistics Platform helps unlock the meaning of unstructured text by determining the language, and identifying the basic linguistic features and structure. Relying on code that is unique to each particular language, Rosette results in highly accurate Chinese, Japanese, Korean, and other international language morphological analysis.
  • The Rosette Linguistics Platform integrates with dtSearch search functionality through the dtSearch Engine’s Language Analyzer API.  Essentially, the dtSearch Engine API passes blocks of Unicode text to the Rosette Linguistics Platform and accepts back words to index.
  • For more details on how the two products work together, including a chart detailing the different steps involved in the dtSearch Engine and Rosette API integration, please see dtSearch and Rosette Full-Featured International Search PDF white paper.
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