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CFDA & CLIP at TREC iKAT 2025: Enhancing Personalized Conversational Search via Query Reformulation and Rank Fusion

arXiv 2509.15588 ↗First posted 19 Sep 2025cs.IR cs.AIcited by 0

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Abstract (arXiv)

The 2025 TREC Interactive Knowledge Assistance Track (iKAT) featured both interactive and offline submission tasks. The former requires systems to operate under real-time constraints, making robustness and efficiency as important as accuracy, while the latter enables controlled evaluation of passage ranking and response generation with pre-defined datasets. To address this, we explored query rewriting and retrieval fusion as core strategies. We built our pipelines around Best-of-N selection and Reciprocal Rank Fusion (RRF) strategies to handle different submission tasks. Results show that reranking and fusion improve robustness while revealing trade-offs between effectiveness and efficiency across both tasks.

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References · 14

  1. 2023Efficient Memory Management for Large Language Model Serving with PagedAttentioncited by 5,944
  2. 2019BART: Denoising Sequence-to-Sequence Pre-training for Natural Language Generation, Translation, and Comprehensioncited by 5,893
  3. 2019PEGASUS: Pre-training with Extracted Gap-sentences for Abstractive Summarizationcited by 1,102
  4. 2021SPLADE: Sparse Lexical and Expansion Model for First Stage Rankingcited by 286
  5. 2021LongT5: Efficient Text-To-Text Transformer for Long Sequencescited by 232
  6. 2020Open-Domain Question Answering Goes Conversational via Question Rewritingcited by 148
  7. 2023Enhancing Conversational Search: Large Language Model-Aided Informative Query Rewritingcited by 69
  8. 2020TREC CAsT 2019: The Conversational Assistance Track Overviewcited by 64
  9. 2024CHIQ: Contextual History Enhancement for Improving Query Rewriting in Conversational Searchcited by 29
  10. 2023IterCQR: Iterative Conversational Query Reformulation with Retrieval Guidancecited by 20
  11. 2024TREC iKAT 2023: A Test Collection for Evaluating Conversational and Interactive Knowledge Assistantscited by 17
  12. 2024TREC iKAT 2023: The Interactive Knowledge Assistance Track Overviewcited by 15
2 more
  1. 2024Aligning Query Representation with Rewritten Query and Relevance Judgments in Conversational Searchcited by 11
  2. 2022SCAI-QReCC Shared Task on Conversational Question Answeringcited by 4

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