According to our database1, Koudai Nakajima authored at least 2 papers between 2014 and 2016.
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Spoken Document Retrieval Using Neighboring Documents and Extended Language Models for Query Likelihood Model.
Proceedings of the 12th NTCIR Conference on Evaluation of Information Access Technologies, 2016
Segmented Spoken Document Retrieval Using Word Co-occurrence Information.
Proceedings of the 11th NTCIR Conference on Evaluation of Information Access Technologies, 2014