Dynamic Linked Data: A SPARQL Event Processing Architecture

2019 24th Conference of Open Innovations Association (FRUCT)

Antoniazzi

Aguzzi

et al. 2019

Self Cite

NGSI-LD is an open specification released by ETSI which proposes an information model and an API for an easy to use and standard management of context information. The NGSI-LD information model is framed within an ontology and adopts JSON-LD as serialization format for context information. This paper presents an approach to the implementation of the NGSI-LD specification over a SPARQL Event Processing Architecture. This work is being developed within the European-Brasilian H2020 SWAMP project focused on implementing an Internet of Things platform providing services for smart water management in agriculture.

mentioning

confidence: 99%

“…SEPA (short for SPARQL Event Processing Architecture) [3], is an architecture supporting the development of dynamic linked data applications and services. It provides a publish/subscribe layer on top of standard SPARQL endpoints, granting the ability to subscribe to changes of a given context over a Linked Data network.…”

mentioning

confidence: 99%

Mapping the NGSI-LD Context Model on Top of a SPARQL Event Processing Architecture: Implementation Guidelines

2019 24th Conference of Open Innovations Association (FRUCT)

Antoniazzi

Aguzzi

et al. 2019

Self Cite

“…To minimize the impact of semantic technologies in this IoT scenario, an enhanced semantic architecture was adopted. A SPARQL Event Processing Architecture [62] implements a contentbased publish-subscribe broker [63] on top of a standard SPARQL endpoint. Through SEPA, clients avoid polling for data (i.e., data is dispatched as soon as available).…”

Section: A Server-sidementioning

confidence: 99%

Towards a Semantic Architecture for the Internet of Musical Things

Turchet

2018 23rd Conference of Open Innovations Association (FRUCT)

Fazekas

et al. 2018

Self Cite

The Internet of Musical Things is an emerging research area that relates to the network of Musical Things, which are computing devices embedded in physical objects dedicated to the production and/or reception of musical content. In this paper we propose a semantically-enriched Internet of Musical Things architecture which relies on a semantic audio server and edge computing techniques. Specifically, a SPARQL Event Processing Architecture is employed as an interoperability enabler allowing multiple heterogeneous Musical Things to cooperate, relying on a music-related ontology. We technically validate our architecture by implementing an ecosystem around it, where five Musical Thing prototypes communicate between each other.

“…In dynamic environments, where information need to be timely dispatched to the requesting clients, a SPARQL endpoint may not be enough. The SPARQL Event Processing Architecture (SEPA) [25] addresses this limitation by implementing the publish/subscribe paradigm [15] on top of a standard SPARQL Endpoint. SEPA is based on the experience matured on the Smart-M3 platform [14,26] and provides the SPARQL Subscribe Language that allows a client to specify a subgraph of interest with a high granularity and receive a notification when an event (i.e.…”

Section: Sepamentioning

confidence: 99%

“…However, as already mentioned in Section 3.2, dynamic environments need proper mechanisms to timely issue notification of changes in the knowledge base. This motivates the adoption of SEPA [25] that wraps the RDF…”

Section: Layer 3 and 4: Sparql Eventmentioning

confidence: 99%

Playsound.space

Proceedings of the 1st International Workshop on Semantic Applications for Audio and Music

Stolfi

Milo

et al. 2018

Self Cite

Playsound is a simple and intuitive tool for collaborative music composition based on sounds from Freesound, an online repository of diverse audio content with Creative Commons licenses. In this paper, we present an approach based on Semantic Web technologies to provide recommendations to Playsound users. A Semantic Web of Things architecture is outlined, showing loosely coupled, independent software agents interoperating by means of a semantic publish/subscribe platform and a set of ontologies to describe agents, audio contents, input/output of audio analytics tools and recommendations. Preliminary tests confirm that the designed architecture adapts well to environments where services can be discovered and seamlessly orchestrated on the fly, resulting in a dynamic workflow. CCS CONCEPTS • Information systems → Web Ontology Language (OWL); Collaborative and social computing systems and tools; Service buses;