- Hideki Shima, T. Mitamura. 2010. Bootstrap Pattern Learning for Open-Domain CLQA*. Abstract: We describe Javelin, a Cross-lingual Question Answering system which participated in the NTCIR-8 ACLIA evaluation and which is designed to work on any type of question, including factoid and complex questions. The key technical contribution of this paper is a minimally supervised bootstrapping approach to generating lexicosyntactic patterns used for answer extraction. The preliminary evaluation result (measured by nugget F3 score) shows that the proposed pattern learning approach outperformed two baselines, a supervised learning approach used in NTCIR-7 ACLIA and a simple key-term based approach, for both monolingual and crosslingual tracks. The proposed approach is general and thus it has potential applicability to a wide variety of information access applications which require deeper semantic processing.
