The EXtensible Cross-Linguistic Automatic Information Machine (EXCLAIM) is an integrated tool for
cross-language information retrieval(CLIR), created at the University of California, Santa Cruzin early 2006. It is currently in a beta stage of development, with some support for more than a dozen languages. The lead developers are Justin Nuger and Jesse Saba Kirchner.
Early work on CLIR depended on manually constructed parallel corpora for each pair of languages. This method is labor-intensive compared to parallel corpora created automatically. A more efficient way of finding data to train a CLIR system is to use matching pages on the web which are written in different languages [cite web
title=Cross-Language Information Retrieval based on Parallel Texts and Automatic Mining of Parallel Texts in the Web
EXCLAIM capitalizes on the idea of latent parallel corpora on the web by automating the alignment of such corpora in various domains. The most significant of these is
Wikipediaitself, which includes articles in [http://meta.wikimedia.org/wiki/Complete_list_of_language_Wikipedias_available 250 languages] . The role of EXCLAIM is to use semanticsand linguistic analytic tools to align the information in these Wikipedias so that they can be treated as parallel corpora. EXCLAIM is also extensible to incorporate information from many other sources, such as the Chinese Community Health Resource Center(CCHRC).
One of the main goals of the EXCLAIM project is to provide the kind of computational tools and CLIR tools for
minority languagesand endangered languageswhich are often available only for powerful or prosperous majority languages.
EXCLAIM is in a beta state, with varying degrees of functionality for different languages. Support for CLIR using the Wikipedia dataset and the most current version of EXCLAIM (v.0.4), including full UTF-8 support and Porter stemming for the English component, is available for the following nineteen languages:
Support using the Wikipedia dataset and an earlier version of EXCLAIM (v.0.3) is available for the following languages:
Current development efforts focus on developing support for Chinese, which has technical issues with segmentation and encoding as well as many available latent datasets in addition to the Wikipedia dataset. Chinese support will be the first for any language in EXCLAIM v.0.5, which incorporates the Trimming And Reformatting Modular System (
The EXCLAIM development plan calls for an integrated CLIR instrument usable searching from English for information in any of the supported languages, or searching from any of the supported languages for information in English when EXCLAIM 1.0 is released. Future versions will allow searching from any supported language into any other, and searching from and into multiple languages.
Notes and references
* [http://www.soe.ucsc.edu/~jnuger/cgi-bin/exclaim.cgi EXCLAIM Website]
* [http://www.w3.org/DesignIssues/Semantic.html Semantic Web Roadmap]
* [http://www.cchphmo.com/cchrchealth/index_E.html Chinese Cultural Health Resource Center]
* [http://people.ucsc.edu/~jnuger/ Justin Nuger's professional webpage]
* [http://people.ucsc.edu/~kirchner/ Jesse Saba Kirchner's professional webpage]
Wikimedia Foundation. 2010.