Tomoya Hashiguchi, Ryota Mibayashi, Huu-Long Pham, Wakana Kuwata, Yuka Kawada, Yuya Tsuda, Takehiro Yamamoto, Hiroaki Ohshima
NTCIR-17 Conference none 2023年12月12日
The KANDUH team participated in the Transfer subtasks 1 and 2 of NTCIR-17.In this paper, we report on our approach to solving the problem and the results.Subtasks 1 and 2 address the dense vector search task, respectively.In both subtasks 1 and 2, we used BM25 to filter documents, followed by dense vector retrieval.The method with the highest nDCG@20 was 0.4339 the one that first finetuned DeBERTa-v2 with MSMARCO and then additionally finetuned with NTCIR-1 data.On the other hand, the method with the lowest nDCG@20 was 0.0751 the one that fine-tuned only MSMARCO data.