header

Specification and Implementation of Mapping Rule Visualization and Editing: MapVOWL and the RMLEditor

28 Pages Posted: 10 Jul 2018 First Look: Accepted

See all articles by Pieter Heyvaert

Pieter Heyvaert

Ghent University-Universiteit Gent - IDLab

Anastasia Dimou

Ghent University-Universiteit Gent - IDLab

Ben De Meester

Ghent University-Universiteit Gent - IDLab

Tom Seymoens

Interuniversity MicroElectronics Center - IMEC - SMIT, Vrije Universiteit Brussel

Aron-Levi Herregodts

Interuniversity MicroElectronics Center - IMEC - SMIT, Vrije Universiteit Brussel

Ruben Verborgh

Ghent University-Universiteit Gent - IDLab

Dimitri Schuurman

Ghent University-Universiteit Gent - MICT

Erik Mannens

Ghent University-Universiteit Gent - IDLab

Abstract

Visual tools are implemented to help users in defining how to generate Linked Data from raw data. This is possible thanks to mapping languages which enable detaching mapping rules from the implementation that executes them. However, no thorough research has been conducted so far on how to visualize such mapping rules, especially if they become large and require considering multiple heterogeneous raw data sources and transformed data values. In the past, we proposed the RMLEditor, a visual graph-based user interface, which allows users to easily create mapping rules for generating Linked Data from raw data.

In this paper, we build on top of our existing work we:

(i) specify a visual notation for graph visualizations used to represent mapping rules,

(ii) introduce an approach for manipulating rules when large visualizations emerge, and

(iii) propose an approach to uniformly visualize data fraction of raw data sources combined with an interactive interface for uniform data fraction transformations.

We perform two additional comparative user studies. The first one compares the use of the visual notation to present mapping rules to the use of a mapping language directly, which reveals that the visual notation is preferred. The second one compares the use of the graph-based RMLEditor for creating mapping rules to the form-based RMLx Visual Editor, which reveals that graph-based visualizations are preferred to create mapping rules through the use of our proposed visual notation and uniform representation of heterogeneous data sources and data values.

Keywords: graph, Linked Data, mapping rule, MapVOWL, RMLEditor

Suggested Citation

Heyvaert, Pieter and Dimou, Anastasia and De Meester, Ben and Seymoens, Tom and Herregodts, Aron-Levi and Verborgh, Ruben and Schuurman, Dimitri and Mannens, Erik, Specification and Implementation of Mapping Rule Visualization and Editing: MapVOWL and the RMLEditor (2018). Journal of Web Semantics First Look. Available at SSRN: https://ssrn.com/abstract=3199319 or http://dx.doi.org/10.2139/ssrn.3199319

Pieter Heyvaert (Contact Author)

Ghent University-Universiteit Gent - IDLab ( email )

Gent
Belgium

Anastasia Dimou

Ghent University-Universiteit Gent - IDLab

Gent
Belgium

Ben De Meester

Ghent University-Universiteit Gent - IDLab

Gent
Belgium

Tom Seymoens

Interuniversity MicroElectronics Center - IMEC - SMIT, Vrije Universiteit Brussel

Pleinlaan 9
Brussels, 1050
Belgium

Aron-Levi Herregodts

Interuniversity MicroElectronics Center - IMEC - SMIT, Vrije Universiteit Brussel

Pleinlaan 9
Brussels, 1050
Belgium

Ruben Verborgh

Ghent University-Universiteit Gent - IDLab ( email )

Gent
Belgium

Dimitri Schuurman

Ghent University-Universiteit Gent - MICT

Korte Meer 7-9-11
Gent, 9000
Belgium

Erik Mannens

Ghent University-Universiteit Gent - IDLab

Gent
Belgium

Register to save articles to
your library

Register

Paper statistics

Abstract Views
126
Downloads
5