Results 11 to 20 of about 11,682 (203)

Query expansion using the clustering of pseudo relevant documents with query sensitive similarity [PDF]

open access: yesمجله مدل سازی در مهندسی, 2017
Query expansion as one of query adaptation approaches, improves retrieval effectiveness of information retrieval. Pseudo-relevance feedback (PRF) is a query expansion approach that supposes top-ranked documents are relevant to the query concept, and ...
Reza Khodaei   +2 more
doaj   +1 more source

Contrastive Refinement for Dense Retrieval Inference in the Open-Domain Question Answering Task

open access: yesFuture Internet, 2023
In recent years, dense retrieval has emerged as the primary method for open-domain question-answering (OpenQA). However, previous research often focused on the query side, neglecting the importance of the passage side.
Qiuhong Zhai   +3 more
doaj   +1 more source

An Improved Retrievability-Based Cluster-Resampling Approach for Pseudo Relevance Feedback

open access: yesComputers, 2016
Cluster-based pseudo-relevance feedback (PRF) is an effective approach for searching relevant documents for relevance feedback. Standard approach constructs clusters for PRF only on the basis of high similarity between retrieved documents.
Shariq Bashir
doaj   +1 more source

A Study of Word Bigrams for Pseudo-relevance Feedback in Information Retrieval [PDF]

open access: yesJournal of Universal Computer Science
Traditional information retrieval models mostly adopt a term independence assumption and are based on single terms or unigrams. Past efforts have attempted to go beyond this assumption, such as by using contiguous terms (i.e.
Edward Kai Fung Dang   +2 more
doaj   +3 more sources

A boosting approach to improving pseudo-relevance feedback [PDF]

open access: yesProceedings of the 34th international ACM SIGIR conference on Research and development in Information Retrieval, 2011
Pseudo-relevance feedback has proven effective for improving the average retrieval performance. Unfortunately, many experiments have shown that although pseudo-relevance feedback helps many queries, it also often hurts many other queries, limiting its usefulness in real retrieval applications.
Yuanhua Lv, ChengXiang Zhai, Wan Chen
openaire   +1 more source

Positional relevance model for pseudo-relevance feedback [PDF]

open access: yesProceedings of the 33rd international ACM SIGIR conference on Research and development in information retrieval, 2010
Pseudo-relevance feedback is an effective technique for improving retrieval results. Traditional feedback algorithms use a whole feedback document as a unit to extract words for query expansion, which is not optimal as a document may cover several different topics and thus contain much irrelevant information.
Yuanhua Lv, ChengXiang Zhai
openaire   +1 more source

Improving Pseudo-Relevance Feedback With Neural Network-Based Word Representations

open access: yesIEEE Access, 2018
In information retrieval, query expansion methods, such as pseudo-relevance feedback, are designed to enrich users' queries with relevant terms for comprehensively interpreting the desired information.
Bo Xu   +4 more
doaj   +1 more source

Pseudo-Relevance Feedback for Multiple Representation Dense Retrieval [PDF]

open access: yesProceedings of the 2021 ACM SIGIR International Conference on Theory of Information Retrieval, 2021
10 ...
Wang, Xiao   +3 more
openaire   +2 more sources

Aggregation of Multiple Pseudo Relevance Feedbacks for Image Search Re-Ranking

open access: yesIEEE Access, 2019
Image retrieval effectiveness can be improved by pseudo relevance feedback (PRF), which automatically uses top-$k$ images of the initial retrieval result as the pseudo feedback.
Wei-Chao Lin
doaj   +1 more source

Query Expansion for Arabic Information Retrieval Model: Performance Analysis and Modification [PDF]

open access: yesThe Egyptian Journal of Language Engineering, 2018
Information retrieval aims to find all relevant documents responding to a query from textual data. A goodinformation retrieval system should retrieve only those documents that satisfy the user query.
Ayat Elnahaas   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy