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20 results for “Understanding of Information Retrieval, Dense Retrieval Models, Pseudo-Relevance Feedback”

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cs.IRcs.CLEmpiricalRecentJul 21, 2026

PLAID-PRF: Pseudo-Relevance Feedback with Centroid-like Tokens in PLAID

Xiao Wang, Sean MacAvaney, Craig Macdonald

This paper introduces PLAID-PRF, a method for performing Pseudo-Relevance Feedback (PRF) over PLAID, a centroid-based dense retrieval model, to improve retrieval effectiveness.

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cs.IRcs.CLEmpiricalRecentJun 11, 2026

ADORE: Iterative Query Expansion with Retrieval-Grounded Relevance Feedback

Amin Bigdeli, Negar Arabzadeh, Radin Hamidi Rad, Sajad Ebrahimi +2 more

The paper introduces ADORE, an iterative framework for query expansion using LLMs, which turns retrieval outcomes into feedback for the next expansion.

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cs.CLcs.IREmpiricalRecentJun 10, 2026

uva-irlab-conv at SemEval-2026 Task 8: Multi-Turn RAG with Learned Sparse Retrieval and Listwise Reranking

Simon Lupart, Kidist Amde Mekonnen, Zahra Abbasiantaeb, Mohammad Aliannejadi

This paper proposes a multi-turn retrieval-augmented generation pipeline for conversational systems across four domains.

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cs.AIcs.IRRecentMay 28, 2026

Xetrieval: Mechanistically Explaining Dense Retrieval

Zhixin Cai, Jun Bai, Yang Liu, Jiaqi Li +6 more

Xetrieval introduces an embedding-level framework to mechanistically explain dense retrieval decisions by decomposing high-dimensional embeddings into sparse, human-interpretable features.

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cs.IRcs.AIcs.LGRecentMay 31, 2026

Test-Time Training for Zero-Resource Dense Retrieval Reranking

Shiyan Liu, Yichen Li

The paper proposes DART, a test-time adaptation method that enhances zero-resource dense retrieval reranking by adaptively tuning a bilinear scoring matrix using pseudo-positive and pseudo-negative ex…

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cs.IREmpiricalRecentJun 10, 2026

Tail-Aware Adaptive-k: Query-Adaptive Context Selection for Retrieval-Augmented Generation

Ziyu Song, Jiaming Fang, Kuangyu Li, Tuo Xia +1 more

This paper proposes Tail-Aware Adaptive-k (TAA-k), a training-free framework for adaptive context selection in retrieval-augmented generation systems using Extreme Value Theory.

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cs.IREmpiricalRecentJul 20, 2026

The Matryoshka Hypencoder

Majd Alkawaas, Sean MacAvaney

The paper proposes an extended version of Hypencoder, a retrieval approach that encodes queries as shallow neural networks, achieving comparable effectiveness with fewer active parameters and higher s…

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cs.IRcs.AIcs.LGRecentMay 28, 2026

No More K-means: Single-Stage Sparse Coding for Efficient Multi-Vector Retrieval

Lixuan Guo, Yifei Wang, Tiansheng Wen, Aosong Feng +2 more

The paper introduces Single-stage Sparse Retrieval (SSR), a method that replaces computationally expensive vector clustering with sparse autoencoding to achieve highly efficient multi-vector retrieval…

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cs.IRcs.AIcs.CLRecentMay 28, 2026

Latent Terms: Dense Retrievers Contain Trivially Extractable BM25-ready Zipfian Vocabularies

Benjamin Clavié, Sean Lee, Aamir Shakir, Makoto P. Kato

The paper introduces Latent Terms, a method that shows dense retrieval models implicitly learn sparse, Zipfian vocabularies that can be used for classical BM25-style sparse scoring without requiring s…

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cs.IRcs.AIRecentMay 30, 2026

Critic-R: Improving Agentic Search using Instruction-tuned Retrievers with Natural Language Introspective Feedback

Md Zarif Ul Alam, Alireza Salemi, Hamed Zamani

Critic-R introduces a novel framework that uses a critic model to provide natural language introspective feedback, significantly improving the performance of agentic search systems by optimizing retri…

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cs.IRcs.AIRecentMay 30, 2026

SkillPager: Query-Adaptive Intra-Skill Navigation via Semantic Node Retrieval

Zicai Cui, Zihan Guo, Weiwen Liu, Weinan Zhang

SkillPager is a novel two-stage framework that efficiently selects minimal, execution-sufficient context from large procedural skill documents by leveraging typed semantic nodes, significantly reducin…

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cs.IRcs.CLEmpiricalRecentJul 9, 2026

Improving Ad-hoc Search Effectiveness for Conversational Information Retrieval via Model Merging

Ahmed Rayane Kebir, Jose G. Moreno, Lynda Tamine

This paper introduces model merging as a training-free strategy for designing a single retrieval model that operates across both ad-hoc and conversational settings, improving ad-hoc search capabilitie…

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cs.CRcs.LGRecentMay 5, 2026

Membership Inference Attacks for Retrieval Based In-Context Learning for Document Question Answering

Tejas Kulkarni, Antti Koskela, Laith Zumot

This paper demonstrates that retrieval-augmented in-context learning systems for document QA are vulnerable to membership inference attacks, proposing novel black-box methods that exploit query prefix…

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cs.AIcs.IRRecentMay 28, 2026

Rethinking Literature Search Evaluation: Deep Research Helps, and Human Citation Lists Are Not a Ground Truth

Gaurav Sahu, Laurent Charlin, Christopher Pal

The paper introduces a Deep Research pipeline that significantly improves literature search recall and demonstrates that human-curated citation lists are often unreliable and do not serve as a true gr…

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cs.AIcs.IRcs.LGRecentMay 28, 2026

CoHyDE: Iterative Co-Training of LLM Rewriter & Dense Encoder for Tool Retrieval

Vaishali Senthil, Ashutosh Hathidara, Sebastian Schreiber

CoHyDE introduces an iterative co-training framework that jointly optimizes an LLM rewriter and a dense encoder, significantly improving tool retrieval accuracy for LLM agents, especially on vague que…

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cs.CLRecentJun 1, 2026

RCEM: Embedder Equipped with Query Rewriting Skill for Robust Conversational Search in Distributional Shift

Kilho Son, Paul Hsu, Cha Zhang, Dinei Florencio

RCEM is a novel conversational dense retrieval model that embeds query rewriting skills into the embedding model, significantly improving robust, context-aware search performance under distributional…

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