Results 11 to 20 of about 39,138 (264)

A query expansion method based on topic modeling and DBpedia features

open access: yesInternational Journal of Information Management Data Insights, 2021
Query Expansion (QE) is a method used for improving Information Retrieval (IR) by adding the terms that are almost selected from feedback documents, and similar to the user query terms.
Sarah Dahir, Abderrahim El Qadi
doaj   +1 more source

A KNN Dynamic Extended Query Strategy Based on GPU [PDF]

open access: yesJisuanji gongcheng, 2018
Traditional Graphics Processing Unit(GPU) executing PGrid index K-Nearest Neighbor(KNN) query method has problems such as large query granularity,redundant calculation,and unstable performance.Therefore,facing spatial KNN relation queries,a KNN query ...
TANG Jia,GONG Yili,LI Wenhai
doaj   +1 more source

Word Embeddings-Based Pseudo Relevance Feedback Using Deep Averaging Networks for Arabic Document Retrieval

open access: yesJournal of Information Science Theory and Practice, 2021
Pseudo relevance feedback (PRF) is a powerful query expansion (QE) technique that prepares queries using the top k pseudo-relevant documents and choosing expansion elements.
Farhan Yasir Hadi   +3 more
doaj   +1 more source

Segmentation Expansion Algorithm for Keyword-Aware Optimal Route Query [PDF]

open access: yesJisuanji gongcheng, 2022
The Keyword-aware Optimal Route query(KOR) obtains the route with minimum time overhead under the conditions of full keyword coverage and path length constraints;it is commonly used in travel planning.Although existing optimization algorithms use various
LIU Mengmeng, NIU Baoning, YANG Rong
doaj   +1 more source

HASHTAG AND HIGHEST SCORED TERMS FOR EXPANDING QUERY

open access: yesJournal of ICT, 2017
Communicating in short messages, such as using microblogs, was becoming more popular currently. Twitter https://twitter.com supports microblogs and retrieval of the blogs by users.
Wahyu Wibowo, Widodo Widodo
doaj   +3 more sources

An Algorithm of Query Expansion for Chinese EMR Retrieval by Improving Expansion Term Weights and Retrieval Scores

open access: yesIEEE Access, 2020
Query expansion (QE) has been widely used in electronic medical record (EMR) retrieval for assisted diagnosis and clinical research. However, existing QE algorithms haven't achieved satisfactory performance in Chinese EMR retrieval, and one noticeable ...
Songchun Yang   +4 more
doaj   +1 more source

Re-ranking vehicle re-identification with orientation-guide query expansion

open access: yesInternational Journal of Distributed Sensor Networks, 2022
Vehicle re-identification, which aims to retrieve information regarding a vehicle from different cameras with non-overlapping views, has recently attracted extensive attention in the field of computer vision owing to the development of smart cities. This
Xue Zhang   +6 more
doaj   +1 more source

Translating queries into snippets for improved query expansion [PDF]

open access: yesProceedings of the 22nd International Conference on Computational Linguistics - COLING '08, 2008
User logs of search engines have recently been applied successfully to improve various aspects of web search quality. In this paper, we will apply pairs of user queries and snippets of clicked results to train a machine translation model to bridge the "lexical gap" between query and document space.
Stefan Riezler   +2 more
openaire   +2 more sources

Conceptual Query Expansion [PDF]

open access: yes, 2005
Query expansion has been extensively studied as a technique for increasing information retrieval performance. However, due to the volume of documents available on the web, many of the techniques that have been successful in traditional information retrieval systems do not scale well to web information retrieval.
Orland Hoeber, Xue Dong Yang, Yiyu Yao
openaire   +1 more source

A Query Expansion Benchmark on Social Media Information Retrieval: Which Methodology Performs Best and Aligns with Semantics?

open access: yesComputers, 2023
This paper presents a benchmarking survey on query expansion techniques for social media information retrieval, with a focus on comparing the performance of methods using semantic web technologies.
Evangelos A. Stathopoulos   +5 more
doaj   +1 more source

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