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THUIR2 at NTCIR-16 Session Search (SS) Task

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arxiv 2307.00250 v1 pith:4OZJYTKL submitted 2023-07-01 cs.IR cs.AI

classification cs.IRcs.AI
keywords assembledmodelsessionachievesbestevaluationfine-tunedfoss
verification ladder T0 review T1 audit T2 compute T3 formal
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Our team(THUIR2) participated in both FOSS and POSS subtasks of the NTCIR-161 Session Search (SS) Task. This paper describes our approaches and results. In the FOSS subtask, we submit five runs using learning-to-rank and fine-tuned pre-trained language models. We fine-tuned the pre-trained language model with ad-hoc data and session information and assembled them by a learning-to-rank method. The assembled model achieves the best performance among all participants in the preliminary evaluation. In the POSS subtask, we used an assembled model which also achieves the best performance in the preliminary evaluation.

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