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RDF keyword search using multiple indexes

Xiaoqing Lin, Fu Zhang, Danling Wang, Jingwei Cheng
2018 Filomat  
Since SPARQL has been the standard language for querying RDF data, keyword search based on keywords-to-SPARQL translation attracts more intention.  ...  However, existing keyword search based on keywords-to-SPARQL translation have limitations that the schema used for keyword-to-SPARQL translation is incomplete so that wrong or incomplete answers are returned  ...  We process the RDF data to obtain the keywords-to-entities index used for the mapping of keywords to entities.  ... 
doi:10.2298/fil1805861l fatcat:mgw7fvl3gfag3p6rwpurvwzmsq

Virtualizing Document Algorithms using Predictive Semantic Data

Dr. Muhammad Usman Tariq Dr. Muhammad Usman Tariq, TJPRC
2020 International Journal of Mechanical and Production Engineering Research and Development  
Users can use the approach to perform the translation efficiently. Moreover, the research focuses on the construction of a virtual document and queries for the semantic web data.  ...  Other than this, a more advanced search interface with a keyword-based approach is introduced for searching and retrieving most relevant objects.  ...  PROPOSED SYSTEM DESIGN FOR SEMANTIC SEARCH In this model, First of all, the system is accepted keyword queries related to computer science research fields domain from the user, and then translate the SPARQL  ... 
doi:10.24247/ijmperdjun2020202 fatcat:hzdo55w7dbdznelkvu4wpu7ura

SPARQL with XQuery-based Filtering [article]

Takahiro Komamizu
2020 arXiv   pre-print
To utilize document-centric XML data linked from entities in LOD, in this paper, a SPARQL-based seamless access method on RDF and XML data is proposed.  ...  Document-centric XML data are such open data that are connected with entities in LOD as supplemental documents for these entities, and to convert these XML data into RDF requires various techniques such  ...  Last, to improve usability, user-friendly queries are preferable such as keyword search and faceted search, which are extensively studied solely on RDF data and XML data (keyword search on RDF data [7  ... 
arXiv:2009.06194v1 fatcat:r425a7te7re7remqvvnrchcvny

CAF-SIAL: Concept aggregation framework for structuring informational aspects of linked open data

Atif Latif, Muhammad Tanvir Afzal, Anwar Us Saeed, Patrick Hoefler, Klaus Tochtermann
2009 2009 First International Conference on Networked Digital Technologies  
Although LOD has amassed large quantities of structured data from diverse, openly available data sources, there is still a lack of user-friendly interfaces and mechanisms for exploring this huge resource  ...  We assume that this kind of application may lead to bridge the gap between semantic search and end users.  ...  The Know-Center is funded within the Austrian COMET program --Competence Centers for Excellent Technologies --under the auspices of the Austrian Federal Ministry of Transport, Innovation and Technology  ... 
doi:10.1109/ndt.2009.5272079 fatcat:ep5qsoszofdqjmpvtwmrnb6nju

Path index based keywords to SPARQL query transformation for semantic data federations

Thilini Cooray, Gihan Wikramanayake
2016 The International Journal on Advances in ICT for Emerging Regions  
Most of the existing approaches focus on just user keyword matching to RDF graphs and output the connecting elements as results.  ...  We have introduced an ontology alignment based approach for keyword query transforming on a federation of RDF data stored using multiple heterogeneous vocabularies.  ...  ACKNOWLEDGMENT We would like to thank Sarasi Lalithasena, PhD candidate of Kno.e.sis Research Center, Wright State University, USA, for her expert advice and encouragement throughout this research.  ... 
doi:10.4038/icter.v9i1.7168 fatcat:ujza2bgi6jegnfpovio6pcd3hi

Keyword Search over Federated RDF Datasets

Yenier Izquierdo, Marco A. Casanova, Grettel García, Frederic Dartayre, Carlos Henrique Levy
2017 International Conference on Conceptual Modeling  
This paper describes an algorithm to perform keyword search over federated RDF datasets.  ...  The algorithm compiles keyword-based queries into federated SPARQL queries, without user intervention, under the assumption that the RDF datasets and the federation have a schema.  ...  Conclusions and Future Work We presented an algorithm, called federated translation algorithm, to perform keyword search over federated RDF datasets by exploring their schemas.  ... 
dblp:conf/er/IzquierdoCGDL17 fatcat:6b6gwy2bubb4xaq5egvvcmvj2u

Result Optimisation for Federated SPARQL Queries

Arooj Fatima, Cristina Luca, George Wilson, Mohamed Kettouch
2015 2015 17th UKSim-AMSS International Conference on Modelling and Simulation (UKSim)  
For a user friendly semantic search tool, there is a number of challenges e.g. translating user query to formal SPARQL query, scalability, guidance, optimising query results for better readability and  ...  Linked open data end-points are accessible to users and applications to exploit semantic data. However it is not very usable for non-expert users.  ...  To enable applications to explore large scale semantic data, new mechanisms are required for query optimization and result optimisation. V.  ... 
doi:10.1109/uksim.2015.50 dblp:conf/uksim/FatimaLWK15 fatcat:wvldtxt3nnchlpieanoitcweju

Using RDF Summary Graph For Keyword-based Semantic Searches [article]

Serkan Ayvaz, Mehmet Aydar
2017 arXiv   pre-print
This study proposes a semantic search framework to support efficient keyword-based semantic search on RDF data utilizing near neighbor explorations.  ...  The Semantic Web began to emerge as its standards and technologies developed rapidly in the recent years.  ...  ACKNOWLEDGMENT The authors would like to thank Prof. Austin Melton for his invaluable help and his guidance during the study.  ... 
arXiv:1707.03602v1 fatcat:kvdiexxvmzawnim6yr6bxqvria

Explorator: A tool for exploring RDF data through direct manipulation

Samur Araújo, Daniel Schwabe
2009 The Web Conference  
Consequently, it is well suited for tasks that involve information search, exploration and visualization.  ...  In this paper we introduce Explorator, a tool for exploring the Semantic Web data by direct manipulation.  ...  Explorator model architectureWe used the ActiveRDF [13] framework as a layer for translating the Explorator model to the RDF model.  ... 
dblp:conf/www/AraujoS09 fatcat:4jxqarjv7rdjpfd4fkrc2lut5q

TripleGeo-CSW: A Middleware for Exposing Geospatial Catalogue Services on the Semantic Web

Spiros Athanasiou, Nikos Georgomanolis, Kostas Patroumpas, Michalis Alexakis, Thodoris Stratiotis
2015 International Conference on Extending Database Technology  
But the vast quantity of offered geospatial information is rather difficult to explore, and its quality hard to assess, due to lack of sufficient metadata.  ...  Hence, the Open Geospatial Consortium has specified application profiles for publishing, accessing, and searching over collections of spatial metadata with standardized Catalogue Services for the Web (  ...  We also wish to thank Andrea Perego and Michael Lutz (European Commission -JRC) for helpful discussions regarding RDF mappings of INSPIRE-aligned metadata.  ... 
dblp:conf/edbt/Athanasiou15 fatcat:t7vbkytsxjffzewt5wkq7v3amy

ExConQuer: Lowering barriers to RDF and Linked Data re-use

Judie Attard, Fabrizio Orlandi, Sören Auer, Werner Kuhn
2018 Semantic Web Journal  
In order to help overcome this barrier, we propose the ExConQuer Framework (Explore, Convert, and Query Framework) as a tool that preserves the semantic richness of the data model while catering for simplified  ...  In this manner, any stakeholder can export and work with RDF data in the formats they are most accustomed with, radically lowering the entry barrier to the use of semantic technologies, and possibly enabling  ...  In [13] , the authors present Explorator, a tool for exploring RDF data through direct manipulation. Users are enabled to explore a semi-structured RDF database through browsing and searching.  ... 
doi:10.3233/sw-170260 fatcat:ogqyo2wtqfe5zgfwlcxucxmptq

Semantic Protocol and Resource Description Framework Query Language: A Comprehensive Review

Essam H. Houssein, Nahed Ibrahem, Alaa M. Zaki, Awny Sayed
2022 Mathematics  
The user may not know the structure and syntax of SPARQL, a formal query language and a sophisticated tool for the semantic web (SEW) and its vast and growing collection of interconnected open data repositories  ...  help end users organize vast amounts of data to address this issue.  ...  Funding: No funding was received for this work. Institutional Review Board Statement: Not applicable.  ... 
doi:10.3390/math10173203 fatcat:cov7s6wsr5dsxlanbpaazmhy4y

Thesaurus-Based Search in Large Heterogeneous Collections [chapter]

Jan Wielemaker, Michiel Hildebrand, Jacco van Ossenbruggen, Guus Schreiber
2008 Lecture Notes in Computer Science  
In the context of the E-Culture demonstrator we have shown earlier that such virtual collections can be effectively explored with keyword search and semantic clustering.  ...  We discuss details of scalable graph search, the required OWL reasoning functionalities and show why SPARQL queries are insufficient for solving the search problem. 5 The software can be found at http:  ...  Therefore, ClioPatria provides an additional search API for keyword-based access to the RDF data.  ... 
doi:10.1007/978-3-540-88564-1_44 fatcat:c53pnv7jlvah7nmavktoj7clr4

SPAR-Key: Processing SPARQL-Fulltext Queries to Solve Jeopardy! Clues

Arunav Mishra, Sairam Gurajada, Martin Theobald
2013 Conference and Labs of the Evaluation Forum  
We describe our SPAR-Key query engine that implements indexing, ranking, and query processing techniques to run a new kind of SPARQL-fulltext queries that were provided in the context of the INEX 2013  ...  By assuming such a serialization of RDF data into a flat relational table, simply means that a given structured query in SPARQL has to be translated into a SQL query and issued to the relational-DBMS.  ...  Jena TDB build its own indexes over the data that can be used to efficiently process SPARQL queries over an RDF store.  ... 
dblp:conf/clef/MishraGT13 fatcat:qlvb7homnvcvreb3luof2ge2j4

Semantic keyword search for expert witness discovery

Siraya Sitthisarn, Lydia Lau, Peter M Dew
2011 2011 International Conference on Semantic Technology and Information Retrieval  
In this paper, we explore an approach that automates the process of converting a conventional keyword search into a semantically formal query in order to find an expert on a semantically enriched knowledge  ...  A case study on expert witness discovery for the resolution of a legal dispute is chosen as the domain of interest and a system named SKengine is implemented to illustrate the approach.  ...  ACKNOWLEDGEMENT We are grateful to Professor Jeremy Barnett for providing a user perspective on the research and for providing information on toy safety disputes from his personal experience; and to Dr  ... 
doi:10.1109/stair.2011.5995759 fatcat:a4bjdu7k2fcprkvfsweisoc56a
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