NDLI: A System for Querying RDF Data Using LINQ

Content Provider	IEEE Xplore Digital Library
Author	Kumamoto, K. Amagasa, T. Kitagawa, H.
Copyright Year	2015
Description	Author affiliation: Grad. Sch. of Syst. & Inf. Eng., Univ. of Tsukuba, Tsukuba, Japan (Kumamoto, K.) \|\| Fac. of Eng. Inf. & Syst., Univ. of Tsukuba, Tsukuba, Japan (Amagasa, T.; Kitagawa, H.)
Abstract	Linked Open Data (LOD) is a principle to publish machine readable data on the Web, and has been gaining growing attention owing to the recent upsurge of open data movement. For this reason, there are strong demands to develop applications that utilize LOD. To develop such an application, developers need to use SPARQL, a query language for RDF data, to access LOD, but there are several barriers: 1) to write an appropriate query, one needs to know the precise graph structure of RDF data being queried, although the graph structure of LOD datasets is in many cases very complicated and therefore hard to learn, and 2) it is hard for many users to learn SPARQL. To cope with this problem, in this paper, we propose a system for users to be able to query RDF data without learning SPARQL. Instead, we introduce JSON-style view on top of SPARQL endpoints. Having defined JSON-style views, ordinary users can issue queries against the views using LINQ, a structured query language similar to SQL. The system translates LINQ queries to corresponding SPARQL queries according to the view definition, and send the translated query to the SPARQL endpoint. The resulting data returned by SPARQL endpoints are processed and returned back to the user. We conduct experiments to show the feasibility of the proposed system.
Sponsorship	Tamkang University
Starting Page	452
Ending Page	457
File Size	579599
Page Count	6
File Format	PDF
e-ISBN	9781479999422
DOI	10.1109/NBiS.2015.69
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-09-02
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	LOD SPARQL Databases LINQ RDF Resource description framework JSON Electronic mail Arrays Database languages Standards Linked Open Data
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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