Deriving a Bilingual Lexicon for Cross Language Information Retrieval

In this paper we describe a systematic approach to derive a bilingual lexicon automatically from paral lel corpora Following this approach a lexicon was derived from the English and Dutch version of the Agenda corpus With the lexicon and a part of the corpus that was not used to derive the lexicon a bilingual retrieval environment was build Recall and precision of monolingual Dutch retrieval was compared to recall and precision of bilingual Dutch to English retrieval An experiment was conducted with the help of eight naive users who formulated queries and judged the relevance of retrieved frag ments The experiment shows precision and relative recall of monolingual retrieval against precision and relative recall of bilingual re trieval