Using Concept base and Wikipedia for Cross-Lingual Link Discovery

[email protected] Abstract This paper describes our method for the Cross-Lingual Link Discovery (CLLD). We used English-Japanese document collections in CLLD subtask of NTCIR-9. The topics in our method are translated by Wikipedia. Wikipedia is written by multi-language. In our method, the page written by the target language is retrieved for each topic written in the source language. The topic written in the target language is made from Wikipedia concept part of this page. Cross-language link is retrieved by a TF-IDF model.We use nouns, nouns phrase and adjective to make concept base. Re-ranked result retrieved by TF-IDF model. TFIDF and concept base are made from the outline part of Wikipidia pages, which are written in the target language extracted in Wikipidia pages collection. Crosslink Evaluation Tool of NTCIR9 Crosslink Task is utilized for performance evaluation.