Papers with PRF
Corpus-Steered Query Expansion with Large Language Models (2024.eacl-short)
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| Challenge: | Recent studies show query expansions generate hypothetical documents that answer queries as expansions. |
| Approach: | They propose a corpus-steered query expansion to promote incorporation of knowledge embedded within the corpus. |
| Outcome: | et al. analyzed corpus-based Query Expansion (CSQE) using LLMs to generate hypothetical documents that answer the query. |
Somali Information Retrieval Corpus: Bridging the Gap between Query Translation and Dedicated Language Resources (2023.emnlp-main)
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| Challenge: | Existing research on the Somali language information retrieval relies on query translation . lack of digital resources is key obstacle to advancing language technologies . |
| Approach: | They develop an annotated corpus for Somali information retrieval using query expansion technique. |
| Outcome: | The proposed corpus comprises 2335 documents collected from well-known online sites . it can be used for text classification-related tasks and question-answering research purposes. |
NPRF: A Neural Pseudo Relevance Feedback Framework for Ad-hoc Information Retrieval (D18-1)
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| Challenge: | Existing neural IR models do not have a mechanism for treating expansion terms differently from the original query terms, making it difficult to combine them with existing PRF approaches. |
| Approach: | They propose an end-to-end neural PRF framework that can be used with existing neural IR models by embedding different neural models as building blocks. |
| Outcome: | Extensive experiments on two standard test collections confirm the effectiveness of the proposed framework in improving the performance of two state-of-the-art neural IR models. |
Decoding a Neural Retriever’s Latent Space for Query Suggestion (2022.emnlp-main)
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Leonard Adolphs, Michelle Chen Huebscher, Christian Buck, Sertan Girgin, Olivier Bachem, Massimiliano Ciaramita, Thomas Hofmann
| Challenge: | Neural retrieval models have replaced bag-of-words methods for document retrieval . however, they lack the interpretability of bag-off-word models . |
| Approach: | They train a query decoder that generates a meaningful query from a latent representation of a neural search engine. |
| Outcome: | The proposed model outperforms both query reformulation and PRF information retrieval baselines. |
Effective Contrastive Weighting for Dense Query Expansion (2023.acl-long)
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| Challenge: | Verbatim queries that do not adequately express the user's search intent are often lexical inadequacies. |
| Approach: | They propose a contrastive weighting model that learns to select the most useful expansion embeddings for semantic search. |
| Outcome: | The proposed model outperforms existing methods while maintaining its efficiency. |
Learning to Select: Query-Aware Adaptive Dimension Selection for Dense Retrieval (2026.acl-long)
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| Challenge: | Existing methods for dense retrieval use pseudo-relevance feedback to model dimension importance . however, they learn global transformations shared across queries and do not model dimension-aware dimension importance. |
| Approach: | They propose a Query-Aware Adaptive Dimension Selection framework that learns to predict per-dimension importance directly from query embedding. |
| Outcome: | The proposed framework improves retrieval effectiveness over the full-dimensional and PRF-based models. |