Semantic Property Graph for Scalable Knowledge Graph Analytics
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A Comparative Evaluation of Geospatial Semantic Web Frameworks for Cultural Heritage
heritage Article A Comparative Evaluation of Geospatial Semantic Web Frameworks for Cultural Heritage Ikrom Nishanbaev 1,* , Erik Champion 1,2,3 and David A. McMeekin 4,5 1 School of Media, Creative Arts, and Social Inquiry, Curtin University, Perth, WA 6845, Australia; [email protected] 2 Honorary Research Professor, CDHR, Sir Roland Wilson Building, 120 McCoy Circuit, Acton 2601, Australia 3 Honorary Research Fellow, School of Social Sciences, FABLE, University of Western Australia, 35 Stirling Highway, Perth, WA 6907, Australia 4 School of Earth and Planetary Sciences, Curtin University, Perth, WA 6845, Australia; [email protected] 5 School of Electrical Engineering, Computing and Mathematical Sciences, Curtin University, Perth, WA 6845, Australia * Correspondence: [email protected] Received: 14 July 2020; Accepted: 4 August 2020; Published: 12 August 2020 Abstract: Recently, many Resource Description Framework (RDF) data generation tools have been developed to convert geospatial and non-geospatial data into RDF data. Furthermore, there are several interlinking frameworks that find semantically equivalent geospatial resources in related RDF data sources. However, many existing Linked Open Data sources are currently sparsely interlinked. Also, many RDF generation and interlinking frameworks require a solid knowledge of Semantic Web and Geospatial Semantic Web concepts to successfully deploy them. This article comparatively evaluates features and functionality of the current state-of-the-art geospatial RDF generation tools and interlinking frameworks. This evaluation is specifically performed for cultural heritage researchers and professionals who have limited expertise in computer programming. Hence, a set of criteria has been defined to facilitate the selection of tools and frameworks. -
V a Lida T in G R D F Da
Series ISSN: 2160-4711 LABRA GAYO • ET AL GAYO LABRA Series Editors: Ying Ding, Indiana University Paul Groth, Elsevier Labs Validating RDF Data Jose Emilio Labra Gayo, University of Oviedo Eric Prud’hommeaux, W3C/MIT and Micelio Iovka Boneva, University of Lille Dimitris Kontokostas, University of Leipzig VALIDATING RDF DATA This book describes two technologies for RDF validation: Shape Expressions (ShEx) and Shapes Constraint Language (SHACL), the rationales for their designs, a comparison of the two, and some example applications. RDF and Linked Data have broad applicability across many fields, from aircraft manufacturing to zoology. Requirements for detecting bad data differ across communities, fields, and tasks, but nearly all involve some form of data validation. This book introduces data validation and describes its practical use in day-to-day data exchange. The Semantic Web offers a bold, new take on how to organize, distribute, index, and share data. Using Web addresses (URIs) as identifiers for data elements enables the construction of distributed databases on a global scale. Like the Web, the Semantic Web is heralded as an information revolution, and also like the Web, it is encumbered by data quality issues. The quality of Semantic Web data is compromised by the lack of resources for data curation, for maintenance, and for developing globally applicable data models. At the enterprise scale, these problems have conventional solutions. Master data management provides an enterprise-wide vocabulary, while constraint languages capture and enforce data structures. Filling a need long recognized by Semantic Web users, shapes languages provide models and vocabularies for expressing such structural constraints. -
Design and Analysis of a Query Processor for Brick
Design and Analysis of a Query Processor for Brick Gabe Fierro David E. Culler UC Berkeley UC Berkeley [email protected] [email protected] ABSTRACT to increase energy efficiency and comfort, as well as provide mon- Brick is a recently proposed metadata schema and ontology for de- itoring and fault diagnosis. While many such applications exist, scribing building components and the relationships between them. the lack of a common description scheme, i.e. metadata, limits the It represents buildings as directed labeled graphs using the RDF portability of these applications across the heterogeneous building data model. Using the SPARQL query language, building-agnostic stock. applications query a Brick graph to discover the set of resources While several efforts address the heterogeneity of building meta- and relationships they require to operate. Latency-sensitive ap- data, these generally fail to capture the relationships and entities plications, such as user interfaces, demand response and model- that are required by real-world applications [8]. This set of re- predictive control, require fast queries — conventionally less than quirements drove the development of Brick [6], a recently proposed 100ms. metadata standard for describing the set of entities and relationships We benchmark a set of popular open-source and commercial within a building. Brick succeeds along three metrics: completeness SPARQL databases against three real Brick models using seven (captures 98% of building management system data points across six application queries and find that none of them meet this perfor- real buildings), expressiveness (can capture all important relation- mance target. This lack of performance can be attributed to design ships) and usability (represents this information in an easy-to-use decisions that optimize for queries over large graphs consisting manner). -
Semantic FAIR Data Web Me
SNOMED CT Research Webinar Today’ Presenter WELCOME! *We will begin shortly* Dr. Ronald Cornet UPCOMING WEBINARS: RESEARCH WEB SERIES CLINICAL WEB SERIES Save the Date! August TBA soon! August 19, 2020 Time: TBA https://www.snomed.org/news-and-events/events/web-series Dr Hyeoun-Ae Park Emeritus Dean & Professor Seoul National University Past President International Medical Informatics Association Research Reference Group Join our SNOMED Research Reference Group! Be notified of upcoming Research Webinars and other SNOMED CT research-related news. Email Suzy ([email protected]) to Join. SNOMED CT Research Webinar: SNOMED CT – OWL in a FAIR web of data Dr. Ronald Cornet SNOMED CT – OWL in a FAIR web of data Ronald Cornet Me SNOMED Use case CT Semantic FAIR data web Me • Associate professor at Amsterdam UMC, Amsterdam Public Health Research Institute, department of Medical Informatics • Research on knowledge representation; ontology auditing; SNOMED CT; reusable healthcare data; FAIR data Conflicts of Interest • 10+ years involvement with SNOMED International (Quality Assurance Committee, Technical Committee, Implementation SIG, Modeling Advisory Group) • Chair of the GO-FAIR Executive board • Funding from European Union (Horizon 2020) Me SNOMED Use case CT Semantic FAIR data web FAIR Guiding Principles https://go-fair.org/ FAIR Principles – concise • Findable • Metadata and data should be easy to find for both humans and computers • Accessible • The user needs to know how data can be accessed, possibly including authentication and authorization -
Diplomová Práce Prostředky Sémantického Webu V Uživatelském
Západočeská univerzita v Plzni Fakulta aplikovaných věd Katedra informatiky a výpočetní techniky Diplomová práce Prostředky sémantického webu v uživatelském rozhraní pro správu elektrofyziologických experimentů Plzeň 2020 Jan Palcút Místo této strany bude zadání práce. Prohlášení Prohlašuji, že jsem diplomovou práci vypracoval samostatně a výhradně s po- užitím citovaných pramenů. V Plzni dne 9. srpna 2020 Jan Palcút Poděkování Tímto bych chtěl poděkovat vedoucímu diplomové práce panu Ing. Romanovi Moučkovi, Ph.D. za cenné rady, připomínky a odborné vedení této práce. Abstract The work aims to verify the applicability of technologies and languages of the semantic web in creating an application for the management of electro- physiological experiments. The application will allow us to manage multiple experiments of the same characteristic type at once, display their metadata, and search in them. The theoretical part of the work describes the semantic web, selected data standards for electrophysiology, and the neuroinformat- ics laboratory of the University of West Bohemia in Pilsen. The analysis and design of the application describe requirements’ specifications and se- lect the data standard and technologies to implement the solution. Part of the proposal is also a description of the solution of writing metadata of experiments into the newly designed structure. Based on the design, the ap- plication for the selected data standard is implemented. The functionality of the application was verified on experiments of various types. Abstrakt Cílem této práce je ověření použitelnosti technologií a jazyků sémantického webu při tvorbě aplikace pro správu elektrofyziologických experimentů. Apli- kace umožní spravovat více experimentů stejného charakteristického typu najednou, zobrazovat jejich metadata a vyhledávat v nich. -
SHACL Satisfiability and Containment
SHACL Satisfiability and Containment Paolo Pareti1 , George Konstantinidis1 , Fabio Mogavero2 , and Timothy J. Norman1 1 University of Southampton, Southampton, United Kingdom {pp1v17,g.konstantinidis,t.j.norman}@soton.ac.uk 2 Università degli Studi di Napoli Federico II, Napoli, Italy [email protected] Abstract. The Shapes Constraint Language (SHACL) is a recent W3C recom- mendation language for validating RDF data. Specifically, SHACL documents are collections of constraints that enforce particular shapes on an RDF graph. Previous work on the topic has provided theoretical and practical results for the validation problem, but did not consider the standard decision problems of satisfiability and containment, which are crucial for verifying the feasibility of the constraints and important for design and optimization purposes. In this paper, we undertake a thorough study of different features of non-recursive SHACL by providing a translation to a new first-order language, called SCL, that precisely captures the semantics of SHACL w.r.t. satisfiability and containment. We study the interaction of SHACL features in this logic and provide the detailed map of decidability and complexity results of the aforementioned decision problems for different SHACL sublanguages. Notably, we prove that both problems are undecidable for the full language, but we present decidable combinations of interesting features. 1 Introduction The Shapes Constraint Language (SHACL) has been recently introduced as a W3C recommendation language for the validation of RDF graphs, and it has already been adopted by mainstream tools and triplestores. A SHACL document is a collection of shapes which define particular constraints and specify which nodes in a graph should be validated against these constraints. -
D2.2: Research Data Exchange Solution
H2020-ICT-2018-2 /ICT-28-2018-CSA SOMA: Social Observatory for Disinformation and Social Media Analysis D2.2: Research data exchange solution Project Reference No SOMA [825469] Deliverable D2.2: Research Data exchange (and transparency) solution with platforms Work package WP2: Methods and Analysis for disinformation modeling Type Report Dissemination Level Public Date 30/08/2019 Status Final Authors Lynge Asbjørn Møller, DATALAB, Aarhus University Anja Bechmann, DATALAB, Aarhus University Contributor(s) See fact-checking interviews and meetings in appendix 7.2 Reviewers Noemi Trino, LUISS Datalab, LUISS University Stefano Guarino, LUISS Datalab, LUISS University Document description This deliverable compiles the findings and recommended solutions and actions needed in order to construct a sustainable data exchange model for stakeholders, focusing on a differentiated perspective, one for journalists and the broader community, and one for university-based academic researchers. SOMA-825469 D2.2: Research data exchange solution Document Revision History Version Date Modifications Introduced Modification Reason Modified by v0.1 28/08/2019 Consolidation of first DATALAB, Aarhus draft University v0.2 29/08/2019 Review LUISS Datalab, LUISS University v0.3 30/08/2019 Proofread DATALAB, Aarhus University v1.0 30/08/2019 Final version DATALAB, Aarhus University 30/08/2019 Page | 1 SOMA-825469 D2.2: Research data exchange solution Executive Summary This report provides an evaluation of current solutions for data transparency and exchange with social media platforms, an account of the historic obstacles and developments within the subject and a prioritized list of future scenarios and solutions for data access with social media platforms. The evaluation of current solutions and the historic accounts are based primarily on a systematic review of academic literature on the subject, expanded by an account on the most recent developments and solutions. -
SWAD-Europe Deliverable 3.11: Developer Workshop Report 4 - Workshop on Semantic Web Storage and Retrieval
Sat Jun 05 2004 22:31:44 Europe/London SWAD-Europe Deliverable 3.11: Developer Workshop Report 4 - Workshop on Semantic Web Storage and Retrieval Project name: Semantic Web Advanced Development for Europe (SWAD-Europe) Project Number: IST-2001-34732 Workpackage name: 3 Dissemination and Implementation Workpackage description: ☞http://www.w3.org/2001/sw/Europe/plan/workpackages/live/esw-wp-3 Deliverable title: 3.11 Developer Workshop Report 4 URI: ☞http://www.w3.org/2001/sw/Europe/reports/dev_workshop_report_4/ Author: Dave Beckett Abstract: This report summarises the fourth SWAD-Europe developer ☞Workshop on Semantic Web Storage and Retrieval which was held 13-14 November 2003 at Vrije Universiteit, Amsterdam, Netherlands and attended by 26 semantic web developers from Europe and the USA discussing practical aspects of developing and deploying semantic web storage and retrieval systems. STATUS: Completed 2004-01-12, updated 2004-01-13 with workshop evaluation details. Contents 1. ☞Introduction 2. ☞Summary 3. ☞Evaluation 4. ☞Outcomes 5. ☞Minutes 6. ☞Attendees 1. Introduction The workshop aimed to discuss: Implementation techniques and problems met Storage models and database schemas Aggregation and tracking provenance Using RDBMSes for semantic web storage Discussion of useful test data and queries for comparisons. Implementing RDF datatypes, entailment (from ☞RDF Semantics) 2. Summary The fourth SWAD-Europe workshop was on ☞Semantic Web Storage and Retrieval and held at Vrije Universiteit, Amsterdam, Netherlands organised by ☞Dave Beckett (ILRT) and hosted by ☞Frank van Harmelen from VU. The workshop participants were mostly technical developers and researchers from a ☞variety of Page 1 Sat Jun 05 2004 22:31:45 Europe/London organisations mostly in industry and education from Greece, UK, Slovenija, The Netherlands and Italy in Europe and from the United States. -
Definition of Data Exchange Standard for Railway Applications
PRACE NAUKOWE POLITECHNIKI WARSZAWSKIEJ z. 113 Transport 2016 6/*!1 Uniwersytet Technologiczno-:]! w Radomiu, (,? DEFINITION OF DATA EXCHANGE STANDARD FOR RAILWAY APPLICATIONS The manuscript delivered: March 2016 Abstract: Railway similar to the other branches of economy commonly uses information technologies in its business. This includes, inter alia, issues such as railway traffic management, rolling stock management, stacking timetables, information for passengers, booking and selling tickets. Variety aspects of railway operations as well as a large number of companies operating in the railway market causes that currently we use a lot of independent systems that often should work together. The lack of standards for data structures and protocols causes the need to design and maintain multiple interfaces. This approach is inefficient, time consuming and expensive. Therefore, the initiative to develop an open standard for the exchange of data for railway application was established. This new standard was named railML. The railML is based on Extensible Markup Language (XML) and uses XML Schema to define a new data exchange format and structures for data interoperability of railway applications. In this paper the current state of railML specification and the trend of development were discussed. Keywords: railway traffic control systems, railML, XML 1. INTRODUCTION It is hard to imagine the functioning of the modern world without information technologies. It is a result of numerous advantages of the modern IT solutions. One of the most important arguments for using IT systems is cost optimisation [1, 3, 6]. Variety aspects of railway operations as well as a large number of companies operating in the railway market causes that currently we use a lot of independent systems that often should cooperate. -
JSON Application Programming Interface for Discrete Event Simulation Data Exchange
JSON Application Programming Interface for Discrete Event Simulation data exchange Ioannis Papagiannopoulos Enterprise Research Centre Faculty of Science and Engineering Design and Manufacturing Technology University of Limerick Submitted to the University of Limerick for the degree of Master of Engineering 2015 1. Supervisor: Prof. Cathal Heavey Enterprise Research Centre University of Limerick Ireland ii Abstract This research is conducted as part of a project that has the overall aim to develop an open source discrete event simulation (DES) platform that is expandable, and modular aiming to support the use of DES at multi-levels of manufacturing com- panies. The current work focuses on DES data exchange within this platform. The goal of this thesis is to develop a DES exchange interface between three different modules: (i) ManPy an open source discrete event simulation engine developed in Python on the SimPy library; (ii) A Knowledge Extraction (KE) tool used to populate the ManPy simulation engine from shop-floor data stored within an Enterprise Requirements Planning (ERP) or a Manufacturing Execution System (MES) to allow the potential for real-time simulation. The development of the tool is based on R scripting language, and different Python libraries; (iii) A Graphical User Interface (GUI) developed in JavaScript used to provide an interface in a similar manner to Commercial off-the-shelf (COTS) DES tools. In the literature review the main standards that could be used are reviewed. Based on this review and the requirements above, the data exchange format standard JavaScript Object Notation (JSON) was selected. The proposed solution accom- plishes interoperability between different modules using an open source, expand- able, and easy to adopt and maintain, in an all inclusive JSON file. -
Strategic Directions for Sakai and Data Interoperability Charles Severance ([email protected]), Joseph Hardin ([email protected])
Strategic Directions for Sakai and Data Interoperability Charles Severance ([email protected]), Joseph Hardin ([email protected]) Sakai is emerging as the leading open source enterprise-class collaboration and learning environment. Sakai's initial purpose was to produce a single application but increasingly, Sakai will need to operate with other applications both within and across enterprises. This document is intended to propose a roadmap as to where Sakai should go in terms of data interoperability both amongst applications running within Sakai and with applications interacting with Sakai. There will be other aspects of future Sakai development that are not covered here. This document takes a long-term view on the evolution of Sakai - it is complementary to the Sakai Requirements process, which captures short to medium term priorities. The tasks discussed in this document should not be seen as the "most important" tasks for Sakai. The document only covers data exchange aspects of Sakai. Nothing in this document is set in stone - since Sakai is a community effort, everyone is a volunteer. However, by publishing this overview we hope to facilitate consensus and alignment of goals within the community over the longer- term future of Sakai. Sakai is currently a Service-Oriented-Architecture. This work maintains and enhances the Service-Oriented aspects of Sakai and adds the ability to use Sakai as an set of objects. This work move be both Service Oriented and Object- Oriented. Making Sakai Web 2.0 While "Web 2.0" is a vastly overused term, in some ways, this effort can be likened to building the Web 2.0 version of Sakai. -
Performance of RDF Library of Java, C# and Python on Large RDF Models
et International Journal on Emerging Technologies 12(1): 25-30(2021) ISSN No. (Print): 0975-8364 ISSN No. (Online): 2249-3255 Performance of RDF Library of Java, C# and Python on Large RDF Models Mustafa Ali Bamboat 1, Abdul Hafeez Khan 2 and Asif Wagan 3 1Department of Computer Science, Sindh Madressatul Islam University (SMIU), Karachi, (Sindh), Pakistan. 2Department of Software Engineering, Sindh Madressatul Islam University (SMIU) Karachi, (Sindh), Pakistan. 3Department of Computer Science, Sindh Madressatul Islam University (SMIU), Karachi (Sindh), Pakistan. (Corresponding author: Mustafa Ali Bamboat) (Received 03 November 2020, Revised 22 December 2020, Accepted 28 January 2021) (Published by Research Trend, Website: www.researchtrend.net) ABSTRACT: The semantic web is an extension of the traditional web, in which contents are understandable to the machine and human. RDF is a Semantic Web technology used to create data stores, build vocabularies, and write rules for approachable LinkedData. RDF Framework expresses the Web Data using Uniform Resource Identifiers, which elaborate the resource in triples consisting of subject, predicate, and object. This study examines RDF libraries' performance on three platforms like Java, DotNet, and Python. We analyzed the performance of Apache Jena, DotNetRDF, and RDFlib libraries on the RDF model of LinkedMovie and Medical Subject Headings (MeSH) in aspects measuring matrices such as loading time, file traversal time, query response time, and memory utilization of each dataset. SPARQL is the RDF model's query language; we used six queries, three for each dataset, to analyze each query's response time on the selected RDF libraries. Keywords: dotNetRDF, Apache Jena, RDFlib, LinkedMovie, MeSH.