While the publication of Linked Data has become increasingly common, process tends to be a relatively complicated and heavy-weight one. is typically published by centralized entities in form larger dataset releases, which downside that there central bottleneck organization or individual responsible for releases. Moreover, certain kinds data entries, particular those with subjective original content, currently do not fit into any existing are therefore more difficult publish. To address these...

The Solid project aims to restore end-users' control over their data by decoupling services and applications from storage. To realize governance the user, Protocol 0.9 relies on Web Access Control, which has limited expressivity interpretability. In contrast, recent privacy protection regulations impose strict requirements personal processing scope of operation. Control mechanism lacks granularity contextual awareness needed enforce these regulatory requirements. Therefore, we suggest a...

The Web is evolving more and to a small set of walled gardens where very number platforms determine the way that people get access (i.e. "log in via Facebook"). As pushback against this ongoing centralization data services on Web, decentralization efforts are taking place move into personal vaults. This positioning paper discusses potential vault society required research steps order there. Emphasis given needed interplay between technological business perspectives. focus situation Flanders,...

The Linked Open Data cloud is evergrowing and many datasets are frequently being updated. In order to fully exploit the potential of information that available in over historical dataset versions, such as discovering evolution taxonomies or diseases biomedical datasets, we need be able store query different versions Datasets efficiently. this demonstration, introduce OSTRICH, which an efficient triple with supported for versioned evaluation. We demonstrate capabilities OSTRICH using a...

Data is scattered across service providers, heterogeneously structured in various formats. By lack of interoperability, data portability hindered, and thus user control inhibited. An interoperable solution for transferring personal needed. We demo PROV4ITDaTa: a Web application, that allows users to transfer into an format their store. PROV4ITDaTa leverages the open-source solutions RML.io, Comunica, Solid: (i) RML.io toolset describe how access from providers generate datasets; (ii)...

When benchmarking rdf data management systems such as public transport route planners, system evaluation needs to happen under various realistic circumstances, which requires a wide range of datasets with different properties. Real-world are almost ideal, they offer these circ umstances, but often hard obtain and inflexible for testing. For reasons, synthetic dataset generators typically preferred over real-world due their intrinsic flexibility. Unfortunately, many that generated within...

The Web is a ubiquitous economic, educational, and collaborative space. However, it also serves as haven for personal information harvesting. Existing decentralised Web-based ecosystems, such Solid, aim to combat data exploitation on the by enabling individuals manage their in store of choice. Since these ecosystems are distributed across many sources, there need techniques support efficient privacy-preserving query execution over stores. Towards this end, position paper we present framework...

For smart decision making, user agents need live and historic access to open data from sensors installed in the public domain. In contrast a closed environment, for Open Data federated query processing algorithms, publisher cannot anticipate advance on specific questions, nor can it deal with bad cost-efficiency of server interface when consumers increase. When publishing observations sensors, different fragmentation strategies be thought depending how needs queried. Furthermore, both...

Linked Open Datasets on the Web that are published as RDF can evolve over time. There is a need to be able store such evolving datasets, and query across their versions. Different storage strategies available for managing versioned each being efficient specific types of queries. In recent work, hybrid strategy has been introduced combines these different lead more execution all at cost increased ingestion While this trade-off beneficial in context querying, it suffers from exponential times...

To counter societal and economic problems caused by data silos on the Web, efforts such as Solid strive to reclaim private storing it in permissioned documents over a large number of personal vaults across Web. Building applications top decentralized Knowledge Graph involves significant technical challenges: centralized aggregation prior query processing is excluded for legal reasons, current federated querying techniques cannot handle this scale distribution at expected performance. We...

In recent years, research in RDF archiving has gained traction due to the ever-growing nature of semantic data and emergence community-maintained knowledge bases. Several solutions have been proposed manage history large graphs, including approaches based on independent copies, time-based indexes, change-based schemes. particular, aggregated changesets shown be relatively efficient at handling very datasets. However, ingestion time can still become prohibitive as revision increases. To...