Fadi Maali's research while affiliated with University of Galway and other places
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Publications (10)
Graph aggregation is an important operation when studying graphs and has been applied in many fields. The heterogeneity, fine-granularity and semantic richness of RDF graphs introduce unique requirements when aggregating the data. In this work, we propose Gagg, an RDF graph aggregation operator that is both expressive and flexible. We provide a for...
The recent big data movement resulted in a surge of activity on layering declarative languages on top of distributed computation platforms. In the Semantic Web realm, this surge of analytics languages was not reflected despite the significant growth in the available RDF data. Consequently, when analysing large RDF datasets, users are left with two...
We tackle the challenges involved in converting raw government data into high-quality Linked Government Data (LGD). Our approach is centred around the idea of self-service LGD which shifts the burden of Linked Data conversion towards the data consumer. The self-service LGD is supported by a publishing pipeline that also enables sharing the results...
One of government’s responsibilities is the provision of public services to its citizens, for example, education, health,
transportation, and social services. Additionally, with the explosion of the Internet in the past 20 years, many citizens
have moved online as their main method of communication and learning. Therefore, a logical step for govern...
We observe that "LOD hubs" are emerging. They provide well-managed reference identifiers that attract a large share of the incoming links on the Web of Data and play a crucial role in data integration within communities of interest. But connecting to such hubs as part of the Linked Data publish-ing process is still a difficult task. In this paper,...
Open Government Data initiatives in the US, UK and elsewhere have made large amounts of raw data available to the public on the Web. There is enormous potential in applying Linked Data principles to these datasets. This potential currently remains largely untapped because governments lack the resources required to convert from raw data to highquali...
Opening public sector information has recently become a trend in many countries around the world. Online government data catalogues
with national, regional or local scope act as one-stop data portals providing descriptions of available government datasets.
These catalogues though remain isolated. Potential benefits from federating geographically ov...
Data models, taxonomies, ontologies, code lists and semantic data exchange formats are the key resources for achieving data interoperability. These resources exist in several national repositories that differ both in scope and in the target groups they address. They are implemented using different technologies and expose different interfaces to the...
Citations
... The profiles provided by our algorithms can be used to discover these links as proposed in [23]. The generated clusters can also be exploited for more complex RDF graph aggregation as proposed in [26], which requires having instances grouped according to their types. In [25], a SPARQL query-based approach is proposed for semantic Web data profiling to construct the actual schema. ...
... • methodology of using a public biomedical ontology repository to identify relevant gene concepts • developing two separate methods for gene concept recognition through machine learning classification • implementation of a framework performing semi-automatic semantic enhancement using the explored methods • report of quality assessment of the resulting data There are different tools that can provide RDF conversion from multiple data types [3][4][5][6][7]. However, they require considerable amount of human input. ...
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... 3. Available statistical data exploration applications [16, 21, 2, 19, 11, 10, 13] support users in exploring data sources in various different ways. To exploit the available functionality, users would require a seamless combination of these existing applications. ...
... This is an essential first step for administrative burden reduction. Additionally, publishing structured information about PSs or other government data as open data enhances transparency and trust between public authorities and citizens [1][2][3]. Moreover, citizens are empowered, as they become well-informed. ...
... Thus, like Level 1, much effort is required by data users to select useful data. • Level 3 (catalog using metadata): Datasets mapped into a standardized metadata schema enable machine-readable representations of the predominant data catalogs [107]. It can achieve better searchability and, subsequently, better accessibility for catalogs differing widely in scope, terminology, and structure. ...
... ,Strommer, Pichler, and Liegl (2010),Tagaris et al. (2009),Bharosa et al. (2011),Kang et al. (2013),Falch, Williams, and Tadayoni (2018),Troshani, Janssen, Lymer, and Parker (2018),Janssen and Tan (2014),Wilkins, Swatman, and Holt (2011), Andrian, Hendradjaya, andSunindyo (2016),Loutas, Lee, Maali, Peristeras, and Tarabanis (2011), De Winne, Janssen, Bharosa, Van Wijk, and Hulstijn (2011) Special Topic: Data Sharing (6 publications): Xu et al. (2011), Van Engelenburg, Janssen, and Klievink (2017), Stragier, Verdegem, and Verleye (2010), Klievink, Janssen, Voort, and Engelenburg (2018), Hofman (2019), Sharafi, Wolf, and Krcmar (2010) Special Topic: Government Monitoring (7 publications): Li and Zhang (2009), Seeman, O'Hara, Holloway, and Forst (2007), Gui, Zhou, and Wu (2011), Yiqun and Wenlei (2009), Nedyalkova (2019), Ostašius and Laukaitis (2015), Pretorius (2017) Special Topic: Interoperability (20 publications): Van Overeem et al. (2007), Yang et al. (2007), Hitzelberger and Feltz (2007), Florjancic and Lesjak (2010), Oddo (2016), Yasin et al. (2018), Klievink, Janssen, and Tan (2012), Chen, Papazafeiropoulou, and Wu (2011), Li, Huang, Yen, Shih, and Hsueh (2013), Periasamy and Sia (2007), Lampathaki et al. (2009), Praditya, Janssen, and Sulastri (2017), Lee et al. (2011), Stepancic and Blazic (2018), Williams, Falch, and Tadayoni (2018), Bharosa et al. (2013), Tammpuu and Masso (2019), Mahmood (2014), Po-Ling et al. (2015), Dais, Nikolaidou, and Anagnostopoulos (2009) Special Topic: Broadband Penetration (4 publications): Antonis et al. (2015), Londo (2011), Boyer-Wright andKottemann(2008),(Boyer-Wright and Kottemann, 2008b) ...
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... More specifically under its action on promoting semantic interoperability among the 55 European Union Member States (SEMIC). It is mainly based on the Data Catalog Vocabulary (DCAT), which was developed initially at the Digital Enterprise Research Institute in Ireland [16] [17] and became later a W3C recommendation under the responsibility of the Government Linked Data Working Group 1 . DCAT is an RDF vocabulary designed to facilitate interoperability between 60 data catalogs published on the Web. ...
