Search Features— International Languages
Unicode Support
- Unicode support allows for indexing and searching of non-English text, including every character set supported by the Unicode standard.
- In addition to Unicode support, dtSearch offers extensive alphabet customization options.
- See Unicode FAQ for more technical information.
- For a general Unicode overview, see Unicode and Text Retrieval white paper.
Language-Neutral Search Options
- The following search options work automatically on text in any language: fuzzy (adjustable from 0 to 10); natural language with automatic relevancy-ranking; variable term weighting; phrase; boolean (and/or/not); proximity and directed proximity; wildcard; macro; numeric range; and fielded data (alone or combined with full-text searching).
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.
Language Analyzer API Integration
- The dtSearch Engine 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.
