SEMANTICS

Significant amounts of knowledge in science and technology have so far not been published as Linked Open Data but are contained in the text and tables of legacy PDF publications. Making such information available as RDF would, for example, provide ...

Information overload on news data is a known problem these days. People and organizations have an increasing demand for extraction of relevant information from massive amounts of news data arriving in real-time as news streams. In this paper, we present ...

Recently, many approaches have been proposed to manage sensor data using Semantic Web technologies for effective heterogeneous data integration. However, our research survey revealed that these solutions primarily focused on semantic relationships and ...

In most government and business organizations alike, statistical data provides the foundation for strategic planning and for the management of operations. In this context, the use of increasingly abundant statistical data available on the web creates ...

For data practitioners embracing the world of RDF and Linked Data, the openness and flexibility is a mixed blessing. For them, data validation according to predefined constraints is a much sought-after feature, particularly as this is taken for granted ...

This paper proposes a distributed framework for accessing, integrating and reasoning with data from heterogeneous, disparate data sources. The proposed solution combines the E -- SHIQ modular ontology representation framework with the Ontop ontology-...

Description Logics are commonly used for the development of ontologies. Yet they are well-known to present difficulties of comprehension, e.g. when confronted with the justification for a particular entailment during the debugging process. This paper ...

Linked data provides methods for publishing and connecting structured data on the web using standard protocols and formats, namely HTTP, URIs, and RDF. Much like the web of documents, linked data resources continuously evolve over time, but for the most ...

Triple stores are the backbone of the evolution of the Linked Data Web. However, even standard queries on many attributes can result in high query response times using available triple stores. For use in commercial search applications, particularly for ...

Popular knowledge bases that provide SPARQL endpoints for the web are usually experiencing a high number of requests, which often results in low availability of their interfaces. A common approach to counter the availability issue is to run a local ...

We present the first system, called iCM-Hydraulic, for intelligent condition monitoring (CM) of hydraulic machines that combines statistical, probabilistic and semantic data analysis for fault detection and diagnosis with semantic explanations. The ...

Biosimulation models have been recently introduced to understand the exact causative factors that give rise to impairment in human organs. Finite Element Method (FEM) provides a mathematical framework to simulate dynamic biological systems, with ...

Cross-Lingual Mapping (CLM) establishes semantic relations between source and target concepts to align two resources lexicalized in different languages, e.g., ontologies, thesauri, or concept inventories, or to enrich a multilingual resource. In this ...

Evolution in Semantic Web content produces difference files (deltas) that track changes between ontology versions. These changes may represent ontology modifications or simply changes in application data. An ontology is typically expressed in a ...

Being able to extract and exploit information that is included in multiple resources (repositories, corpora, etc.) is essential to benefiting from the increasing availability and complementary nature of such data scattered across the World Wide Web. ...

Processing SPARQL queries involves the construction of an efficient query plan to guide query execution. Alternative plans can vary in the resources and the amount of time that they need by orders of magnitude, making planning crucial for efficiency. On ...

The Extensible Markup Language (XML) has become a widely adopted data interchange format. With the rise of Linked Data published using the Resource Description Framework (RDF), a number of tools for transforming XML to RDF have been developed. ...

The extraction and maintenance of Linked Data datasets is a cumbersome, time-consuming and resource-intensive activity. The cost for producing Linked Data can be reduced by a workflow management system, which describes plans to systematically support ...

The rdf data model allows the description of domain-level knowledge that is understandable by both humans and machines. rdf data can be derived from different source formats and diverse access points, ranging from databases or files in csv format to ...

This paper investigates necessities and pitfalls in existing data licensing practices on the World Wide Web. The authors analyzed four open data portals with respect to the available licenses and drew conclusions about the quantity and quality of ...

Tourpedia (http://tour-pedia.org) is an open initiative which contains a linked dataset of tourism places, i.e. accommodations, attractions, points of interest (POIs) and restaurants. Tourpedia extracts and integrates information about places from four ...

Many of the available RDF datasets describe millions of resources by using billions of triples. Consequently, millions of links can potentially exist among such datasets. While parallel implementations of link discovery approaches have been developed in ...

Over the last decades many machine learning experiments have been published, giving benefit to the scientific progress. In order to compare machine-learning experiment results with each other and collaborate positively, they need to be performed ...

In the digital era, Wikipedia represents a comprehensive cross-domain source of knowledge with millions of contributors. The DBpedia project transforms Wikipedia content into RDF and currently plays a crucial role in the Web of Data as a central ...

The Living Semantic Platform (LSP) is a web-based and collaborative development environment for lightweight ontologies based on OWL2 QL. Moreover, it includes an integrated OWL2 QL reasoner which allows for efficient query answering based on SPARQL ...

The SimplePARQL is a new and intuitive approach to query the Web of Data through existing SPARQL endpoints by using keywords in addition to SPARQL elements. Thus, the user is able to write more expressive pseudo-SPARQL queries where knowing the ontology ...

DBpedia is one of the biggest and most important focal point of the Linked Open Data movement. However, in spite of its multiple services, it lacks a wayback mechanism to retrieve historical versions of resources at a given timestamp in the past, thus ...

A lot of Linked Data on the Web is dynamic. Despite the existing query solutions and implementations, crucial unresolved issues remain. This poster presents a novel approach to update sparql results client-side by exchanging fragment patches. We aim at ...

Linked data resources supporting matchmaking supply and demand on the procurement market are so far limited. Precise match could be obtained by enriching the procurement notices with detailed types and parameters of the product/service that are ...

Entities within an ontology are connected via different paths. Connection of entities can be even considered within an ontology merged with its import closure constituting an ontology network. This demo paper presents a web-based tool for search of ...