论文信息 - Chinese-Chinese and English-Chinese Question Answering with ASQA at NTCIR-6 CLQA

Chinese-Chinese and English-Chinese Question Answering with ASQA at NTCIR-6 CLQA

For NTCIR-6 CLQA, we improved our question answering system ASQA (Academia Sinica Question Answering System), which participated in NTCIR-5 CLQA, so that it could deal with the Chinese-Chinese (C-C) subtask and the English-Chinese (E-C) subtask. There are three innovations in the improved system: (a) to handle the E-C subtask, we have built an English question classifier that adopts Question Informer as a key classification feature; (b) with automatically generated Answer Templates, we can accurately pinpoint the correct answers for some questions. When Answer Templates are applied, the RU-accuracy is 0.911 for the applied questions; and (c) the Answer Ranking module has been improved by incorporating a new feature called, SCO-QAT (Sum of Co-occurrence of Question and Answer Terms). In NTCIR-6 CLQA, ASQA achieved 0.553 RU-accuracy in the C-C subtask and 0.34 RU-accuracy in the E-C subtask.

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