CrossLanguageInformationRetrieval.pptVIP

Hsin-Hsi Chen Chapter 10Cross-Language Information Retrieval Hsin-Hsi Chen (陳信希) Department of Computer Science and Information Engineering National Taiwan University Outlines Multilingual Environments What is Cross-Language Information Retrieval? Interdisciplinary relationship in CLIR Major Problems in CLIR Major Approaches in CLIR Summary Multilingual Collections There are 6,703 languages listed in the Ethnologue Digital libraries OCLC Online Computer Library Center serves more than 17,000 libraries in 52 countries and contains over 30 million bibliographic records with over 500 million records ownership attached in more than 370 languages World Wide Web Around 40% of Internet users do not speak English, however, 80% of Web sites are still in English What is Cross-Language Information Retrieval? Definition: Select information in one language based on queries in another. Terminologies Cross-Language Information Retrieval(ACM SIGIR 96 Workshop on Cross-Linguistic Information Retrieval) Translingual Information Retrieval(Defense Advanced Research Project Agency - DARPA) Generalization: Multi- Cross- Lingual Information Access MLIR Applications Multilingual information access in multilingual country, organization, enterprise, etc. Cross- language information retrieval for users who read a second language (large passive vocabulary) but are not able to formulate good queries (small active vocabulary). Monolingual users may retrieve images by taking advantage of multilingual captions. Monolingual users may retrieve documents and have them translated (automatically or manually) in their language. Why is Cross- Language Information Retrieval Important? More information workers with less time require fast access to global resources global B2B interactions (virtual enterprises) global B2C interactions (online trading, travelling) time critical information (translation comes too late) History 1970 Salton runs retrieval experiments with a small English/ German dictionary