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Reactive Processing of RDF Streams of Events [chapter]

Jean-Paul Calbimonte, Karl Aberer
2015 Lecture Notes in Computer Science  
The idea of RDF stream processing (RSP) has emerged in recent years to fill this gap, and the research community has produced prototype engines that cover aspects including complex event processing and  ...  The heterogeneity of event streams has raised the challenges of integrating, interpreting and processing them coherently.  ...  Introduction Processing streams of events is challenging task in a large number of systems in the Web.  ... 
doi:10.1007/978-3-319-25639-9_56 fatcat:am4wb2z2lfhppecof4auum4gzq

Processing Heterogeneous RDF Events with Standing SPARQL Update Rules [chapter]

Mikko Rinne, Haris Abdullah, Seppo Törmä, Esko Nuutila
2012 Lecture Notes in Computer Science  
When used in a system supporting incremental evaluation of multiple simultaneously active and collaborating queries SPARQL can define entire event processing networks.  ...  SPARQL query language is targeted to search datasets encoded in RDF.  ...  In this paper we study the use of RDF/SPARQL in complex event processing -the detection of patterns and derivation of new events from incoming events.  ... 
doi:10.1007/978-3-642-33615-7_24 fatcat:2y7bx2olgvhmjifdurifzzxiim

A Query Model for Ontology-Based Event Processing over RDF Streams [chapter]

Riccardo Tommasini, Pieter Bonte, Emanuele Della Valle, Femke Ongenae, Filip De Turck
2018 Lecture Notes in Computer Science  
Ontology-Based Event Processing (OBEP) is our contribution to this field. OBEP combines Description Logics and Event Recognition Languages.  ...  Stream Reasoning (SR) envisioned, investigated and proved the possibility to make sense of streaming data in real-time.  ...  In this paper, we investigate the foundations of Ontology-Based Event Processing (OBEP) [18] . OBEP enables event detection over RDF Streams without neglecting events first-class nature.  ... 
doi:10.1007/978-3-030-03667-6_28 fatcat:felbckllqngyxc6uuhyquuhdka

A Query Model to Capture Event Pattern Matching in RDF Stream Processing Query Languages [chapter]

Daniele Dell'Aglio, Minh Dao-Tran, Jean-Paul Calbimonte, Danh Le Phuoc, Emanuele Della Valle
2016 Lecture Notes in Computer Science  
of expressive event patterns over RDF streams?"  ...  Meanwhile, only a few solutions combine Semantic Web and Complex Event Processing (CEP), which includes relevant features, such as identifying sequences of events in streams.  ...  [R1] RSEP-QL should process RDF graph-based streams.  ... 
doi:10.1007/978-3-319-49004-5_10 fatcat:nqxwjyexvngwlhofc3zkcwyx3y

Top-K queries in RDF graph-based stream processing with actors

Syed Gillani, Abderrahmen Kammoun, Julien Subercaze, Kamal Singh, Gauthier Picard, Frédérique Laforest
2015 Proceedings of the 9th ACM International Conference on Distributed Event-Based Systems - DEBS '15  
RGraSPA uses RDF graph-based event model to encapsulate a set of triples and process them in continuous manner.  ...  In this paper, we describe our novel system named as RGraSPA an RDF Graph-based Stream Processing with Actors, which adheres to the realm of RDF graph and knowledge reasoning, and uses an actor model for  ...  In a traditional relational-based stream processing, a stream S is a countable infinite set of events s ∈ S.  ... 
doi:10.1145/2675743.2772587 dblp:conf/debs/GillaniKSSPL15 fatcat:4oxi3aikrfemdhzvjkfixk3yly

High-performance complex event processing to detect anomalies in streaming RDF data [article]

Majd Abdo, Universität Stuttgart, Universität Stuttgart
Complex Event Processing(CEP) systems are involved to analyze continuous behavior of these machines, detect undesired patterns and give alerts in case of anomalies.  ...  The thesis goes through the details of analyzing RDF streaming events to detect potential anomalies using Markov Model technique.  ...  Both are represented in RDF and formatted using N-triples. Basically RDF is simple and well expressive data model.  ... 
doi:10.18419/opus-9268 fatcat:qvvucp2xfrasjpyepy5jeqaa5y

C-SPARQL Extension for Sampling RDF Graphs Streams [chapter]

Amadou Fall Dia, Zakia Kazi-Aoul, Aliou Boly, Yousra Chabchoub
2017 Studies in Computational Intelligence  
Several RDF Stream Processing (RSP) systems have been proposed. Existing RSP systems benefit from the advantages of semantic web technologies and traditional data flow management systems.  ...  In this paper, we propose to extend C-SPARQL for continuously generating samples on RDF graphs. We add three sampling operators (UNIFORM, RESERVOIR and CHAIN) to the C-SPARQL query syntax.  ...  This project aims to design and develop a distributed processing platform of massive data streams. The case study concerns the real-time monitoring of a drinking water distribution network.  ... 
doi:10.1007/978-3-319-65406-5_2 fatcat:xczc7p3tpneqlbpyejm54y4kca

DSCEP: An Infrastructure for Distributed Semantic Complex Event Processing [article]

Vitor Pinheiro de Almeida and Sukanya Bhowmik and Markus Endler and Kurt Rothermel
2020 arXiv   pre-print
Semantic Complex Event Processing (CEP) systems have evolved from the classical rule-based CEP systems, by integrating high-level knowledge representation and RDF stream processing using both the data  ...  We show that by splitting the RDF stream processing and the background knowledge using the concept of SCEP operators, it's possible to considerably reduce processing time.  ...  The RDF graph event allows structuring more complex events in a stream, as opposed to plain triples. In our model, we de ne that each RDF triple in the RDF graph must contain a timestamp.  ... 
arXiv:2002.05869v1 fatcat:zb4stbeuo5h2fkfrcga43uzuvq

An Approach for Real-Time Stream Reasoning for the Internet of Things

Markus Endler, Jean-Pierre Briot, Francisco Silva E Silva, Vitor P. de Almeida, Edward H. Haeusler
2017 2017 IEEE 11th International Conference on Semantic Computing (ICSC)  
(CEP) and RDF (graphbased knowledge model).  ...  This paper proposes a new semantic model for data stream processing and real-time symbolic reasoning based on the concepts of Semantic Stream and Fact Stream, as a natural extensions of Complex Event Processing  ...  ACKNOWLEDGEMENT Our ESMOCYP (Efficient Semantic MOdels and Faulttolerant Middleware for CYber-Physical Systems) Project is being supported by CAPES (Brazil) and DAAD (Germany) cooperation program PROBRAL (Process  ... 
doi:10.1109/icsc.2017.84 dblp:conf/semco/EndlerBSAH17 fatcat:bnbnjyrptze6thuyz4gcbiwgxq

Towards Ontology-Based Event Processing [chapter]

Riccardo Tommasini, Pieter Bonte, Emanuele Della Valle, Erik Mannens, Filip De Turck, Femke Ongenae
2017 Lecture Notes in Computer Science  
In this paper, we present an Ontology Based Event Processing system that bridges the gap between ontology-based reasoning and event processing.  ...  We propose both a language and an architecture to perform event processing over abstract ontology concepts.  ...  extraction of the underlying RDF graph in the second layer and the Esper engine 11 to perform the event processing on the high level events in the third layer.  ... 
doi:10.1007/978-3-319-54627-8_9 fatcat:srersvmyfzf6fc2q2ic7hcaiui

Taming velocity and variety simultaneously in big data with stream reasoning

Emanuele Della Valle, Daniele Dell'Aglio, Alessandro Margara
2016 Proceedings of the 10th ACM International Conference on Distributed and Event-based Systems - DEBS '16  
The paper mainly targets researchers and practitioners in the area of event and stream processing.  ...  an active research domain, where researchers on event and stream processing can apply their expertise; (ii) by discussing techniques and technologies that can help advancing the state of the art in event  ...  RDF Stream Processing Being the RDF stream data model an extension of RDF, SPARQL is the perfect candidate to build event and stream processing languages for it.  ... 
doi:10.1145/2933267.2933539 dblp:conf/debs/ValleDM16 fatcat:v4x3iozocfhqrndy2tvct3dygm

Extracting Events from Wikipedia as RDF Triples Linked to Widespread Semantic Web Datasets [chapter]

Carlo Aliprandi, Francesco Ronzano, Andrea Marchetti, Maurizio Tesconi, Salvatore Minutoli
2011 Lecture Notes in Computer Science  
Many attempts have been made to extract structured data from Web resources, exposing them as RDF triples and interlinking them with other RDF datasets: in this way it is possible to create clouds of highly  ...  We extract events from the KAF semantic annotation and then we structure each event as a set of RDF triples linked to both DBpedia and WordNet.  ...  In particular, by applying this process to DBpedia, a considerable amount of new RDF triples can be generated.  ... 
doi:10.1007/978-3-642-21796-8_10 fatcat:u7hli4ngqjhrxksxq35jxpmihq

Dynamic Access Control to Semantics-Aware Streamed Process Logs

Marcello Leida, Paolo Ceravolo, Ernesto Damiani, Rasool Asal, Maurizio Colombo
2019 Journal on Data Semantics  
In this paper, we present a model, a language and a software toolkit for controlling access to process data where logs are made available as streams of RDF triples referring to some company-specific business  ...  of the event stream.  ...  In Pmon, remote process probes broadcast events over the network to be analyzed by monitors; in Pmin, event data are often imported to some static data lake.  ... 
doi:10.1007/s13740-019-00106-2 fatcat:32kr2t762zczfgvwqh27o3w6lq

Stream-Based Reasoning for IoT Applications — Proposal of Architecture and Analysis of Challenges

Markus Endler, Jean-Pierre Briot, Vitor P. de Almeida, Ruhan dos Reis, Francisco Silva e Silva
2017 International Journal of Semantic Computing (IJSC)  
other CEP engines in the Event Processing Network.  ...  Then, in the first stream processing stage, our approach transforms the stream of annotated data into a stream of RDF statements, and in the second stage, we transform the stream of RDF-triples into semantically  ... 
doi:10.1142/s1793351x1740013x fatcat:ls47jf67krh6tog5w3cziqfgb4

Specifying and Enforcing High-Level Semantic Obligation Policies

Zhen Liu, Anand Ranganathan, Anton Riabov
2009 Social Science Research Network  
In this paper, we propose a semantic obligation policy specification language called Eagle, which is based on patterns of high-level events, represented as RDF graph patterns.  ...  This workflow consists of a number of event sources and event processing components, which are described semantically. We present the policy language and enforcement architecture in this paper.  ...  An example, in RDF N3 format, is: Stream.  ... 
doi:10.2139/ssrn.3199437 fatcat:h7b47hswgbhfzgfxb5cfy5gcpu
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