LE Juan, ZHANG Chunxia, NIU Zhendong. Answer Extraction Based on Merging Score Strategy of Hot Terms[J]. Chinese Journal of Electronics, 2016, 25(4): 614-620. doi: 10.1049/cje.2016.06.028
Citation: LE Juan, ZHANG Chunxia, NIU Zhendong. Answer Extraction Based on Merging Score Strategy of Hot Terms[J]. Chinese Journal of Electronics, 2016, 25(4): 614-620. doi: 10.1049/cje.2016.06.028

Answer Extraction Based on Merging Score Strategy of Hot Terms

doi: 10.1049/cje.2016.06.028
Funds:  This work is supported by the National Natural Science Foundation of China (No.61370137, No.61272361), the National Basic Research Program of China (973 Program) (No.2012CB720702), and the Ministry of Education in China Project of Humanities and Social Sciences (No.13YJC870011).
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  • Corresponding author: NIU Zhendong (corresponding author) was born in 1968, Ph.D. supervisor, professor. His research areas include digital library, information retrieval, e-learning and neuroinformatics. (Email:zniu@bit.edu.cn)
  • Received Date: 2014-05-26
  • Rev Recd Date: 2014-10-16
  • Publish Date: 2016-07-10
  • Answer extraction (AE) is one of the key technologies in developing the open domain Question & answer (Q&A) system. Its task is to yield the highest score to the expected answer based on an effective answer score strategy. We introduce an answer extraction method by Merging score strategy (MSS) based on hot terms. The hot terms are defined according to their lexical and syntactic features to highlight the role of the question terms. To cope with the syntactic diversities of the corpus, we propose four improved candidate answer score algorithms. Each of them is based on the lexical function of hot terms and their syntactic relationships with the candidate answers. Two independent corpus score algorithms are proposed to tap the role of the corpus in ranking the candidate answers. Six algorithms are adopted in MSS to tap the complementary action among the corpus, the candidate answers and the questions. Experiments demonstrate the effectiveness of the proposed strategy.
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