Results 21 to 30 of about 20,917 (268)

An Efficient Top- $K$ Spatial Keyword Typicality and Semantic Query

open access: yesIEEE Access, 2019
Existing spatial keyword query processing models mainly consider the spatial proximity and text relevancy between spatial objects and spatial keyword query, which usually makes the top-k answer objects are similar to each other.
Xiaoyan Zhang   +4 more
doaj   +1 more source

THE SEMANTIC RETRIEVAL OF SPATIAL DATA SERVICE BASED ON ONTOLOGY IN SIG [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
The research of SIG (Spatial Information Grid) mainly solves the problem of how to connect different computing resources, so that users can use all the resources in the Grid transparently and seamlessly.
S. Sun, S. Sun, D. Liu, G. Li, W. Yu
doaj   +1 more source

Diversified spatial keyword search on road networks [PDF]

open access: yes, 2014
With the increasing pervasiveness of the geo-positioning technologies, there is an enormous amount of spatio-textual objects available in many applications such as location based services and social networks.
Cheema, MA   +5 more
core   +1 more source

SMPKR: Search Engine for Internet of Things

open access: yesIEEE Access, 2019
The Internet of Things (IoT) has become the infrastructure to widely support ubiquitous applications. Due to the highly dynamic context setting, IoT search engines have attracted increasing attention from both industrial and academic field to crawl and ...
Jine Tang   +3 more
doaj   +1 more source

Ecosystem Services Research Trends: A Bibliometric Analysis from 2000–2020

open access: yesEcologies, 2021
The study of ecosystem services (ES) is becoming increasingly popular, as it plays an important role in human wellbeing, economic growth, and livelihoods.
Ruchira Gangahagedara   +4 more
doaj   +1 more source

EAGLE—A Scalable Query Processing Engine for Linked Sensor Data [PDF]

open access: yes, 2019
Recently, many approaches have been proposed to manage sensor data using semantic web technologies for effective heterogeneous data integration. However, our empirical observations revealed that these solutions primarily focused on semantic relationships
G. Breslin, John   +4 more
core   +1 more source

Reverse spatial top-k keyword queries

open access: yesThe VLDB Journal, 2022
AbstractWe introduce the ReverseSpatial Top-kKeyword (RSK) query, which is defined as: given a query term q, an integer k and a neighborhood size find all the neighborhoods of that size where q is in the top-k most frequent terms among the social posts in those neighborhoods.
Pritom Ahmed   +3 more
openaire   +1 more source

cBiK: A Space-Efficient Data Structure for Spatial Keyword Queries

open access: yesIEEE Access, 2020
A vast amount of geo-referenced data is being generated by mobile devices and other sensors increasing the importance of spatio-textual analyses on such data.
Carlos E. Sanjuan-Contreras   +3 more
doaj   +1 more source

Spatial Keyword Query of Region-Of-Interest Based on the Distributed Representation of Point-Of-Interest

open access: yesISPRS International Journal of Geo-Information, 2019
The tremendous advance in information technology has promoted the rapid development of location-based services (LBSs), which play an indispensable role in people’s daily lives. Compared with a traditional LBS based on Point-Of-Interest (POI), which
Xiangdian Zhu   +3 more
doaj   +1 more source

A Study on Ranking Method in Retrieving Web Pages Based on Content and Link Analysis: Combination of Fourier Domain Scoring and Pagerank Scoring [PDF]

open access: yes, 2008
Ranking module is an important component of search process which sorts through relevant pages. Since collection of Web pages has additional information inherent in the hyperlink structure of the Web, it can be represented as link score and then combined ...
Purwitasari, D. (Diana)
core   +3 more sources

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