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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  ...  ) and consuming as triple stream, not only shreds the general architecture of RDF graph but also fails to capture the boundaries on a set of attributes within an event.  ... 
doi:10.1145/2675743.2772587 dblp:conf/debs/GillaniKSSPL15 fatcat:4oxi3aikrfemdhzvjkfixk3yly

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

Amadou Fall Dia, Zakia Kazi-Aoul, Aliou Boly, Yousra Chabchoub
2017 Studies in Computational Intelligence  
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.  ...  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.  ...  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

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  
Stream Reasoning (SR) envisioned, investigated and proved the possibility to make sense of streaming data in real-time.  ...  It allows describing events either as logical statements or as complex event patterns, and it captures their occurrences over ontology streams.  ...  Data Model Similar to existing approaches in Stream Reasoning state-of-the-art [1, 8] , OBEP data model is based on RDF Streams: any RDF Graph in an RDF Stream represents an OBEP physical event.  ... 
doi:10.1007/978-3-030-03667-6_28 fatcat:felbckllqngyxc6uuhyquuhdka

Constructing Event Processing Systems of Layered and Heterogeneous Events with SPARQL [chapter]

Mikko Rinne, Esko Nuutila
2014 Lecture Notes in Computer Science  
In this paper we review the di↵erent types of complex event processing building blocks presented in literature and show their translations to SPARQL update rules through examples, supporting a modular  ...  SPARQL was originally developed as a derivative of SQL to process queries over finite-length datasets encoded as RDF graphs.  ...  Acknowledgments This work has been carried out in Spaceify, SPIRE and Tra cSense projects funded by European Commission through the SSRA (Smart Space Research and Applications) activity of EIT ICT Labs  ... 
doi:10.1007/978-3-662-45563-0_42 fatcat:lrwhns6unvcdnisyuma4r7vdai

Constructing Event Processing Systems of Layered and Heterogeneous Events with SPARQL

Mikko Rinne, Esko Nuutila
2016 Journal on Data Semantics  
In this paper we review the di↵erent types of complex event processing building blocks presented in literature and show their translations to SPARQL update rules through examples, supporting a modular  ...  SPARQL was originally developed as a derivative of SQL to process queries over finite-length datasets encoded as RDF graphs.  ...  Acknowledgments This work has been carried out in Spaceify, SPIRE and Tra cSense projects funded by European Commission through the SSRA (Smart Space Research and Applications) activity of EIT ICT Labs  ... 
doi:10.1007/s13740-016-0073-4 fatcat:62flo2pxkvbdxdyoeuppkjbtbm

Design and development of linked data from The National Map

E. Lynn Usery, Dalia Varanka
2012 Semantic Web Journal  
In a case study, the USGS has developed initial methods for legacy vector and raster formatted geometry, attributes, and spatial relationships to be accessed in a linked data environment maintaining the  ...  Geological Survey (USGS) to supply its extensive volumes of geospatial data, information, and knowledge in a machine interpretable form and reach users and applications that heretofore have been unavailable  ...  For example, a tributary is a body of water that flows into a larger stream, or in the science vocabulary, 'drains' into another stream.  ... 
doi:10.3233/sw-2011-0054 fatcat:2nhcwjlbmjbqxfekt3vbw633he

A query language for semantic complex event processing: Syntax, semantics and implementation

Syed Gillani, Antoine Zimmermann, Gauthier Picard, Frédérique Laforest, Oscar Corcho
2018 Semantic Web Journal  
The novelties of SPA include (i) the separation of general graph pattern matching constructs and temporal operators; (ii) the support for RDF graph-based events and multiple RDF graph streams; (iii) the  ...  expressibility of temporal operators such as Kleene+, conjunction, disjunction and event selection strategies; and (iv) the operators to integrate background information and streaming RDF graph streams  ...  In the rest of the paper, we simply use the terms graph for RDF graph, event for RDF graph event, stream for RDF graph stream, and streamset for RDF graph streamset.  ... 
doi:10.3233/sw-180313 fatcat:k63c643kurevfhf5cgtljxzhi4

Scenario driven data modelling: a method for integrating diverse sources of data and data streams

Shelton D Griffith, Daniel J Quest, Thomas S Brettin, Robert W Cottingham
2011 BMC Bioinformatics  
The SDDM process constructed a scenario, created a RDF multi-relational directed graph that linked diverse types of data to the Semantic Web, implemented RDF conversion tools (RDFizers) to bring content  ...  Recent advancements in distributed multi-relational directed graphs, implemented in the form of the Semantic Web make it possible to deal with complicated heterogeneous data in new and interesting ways  ...  Stouder, Director Technology Development and Deployment in the Global Security Directorate at Oak Ridge National Laboratory (ORNL) and Anthony V.  ... 
doi:10.1186/1471-2105-12-s10-s17 pmid:22165854 pmcid:PMC3236839 fatcat:a675qiqszbbtvi6dkqwraui3oi

Enabling Query Technologies for the Semantic Sensor Web

Jean-Paul Calbimonte, Hoyoung Jeung, Oscar Corcho, Karl Aberer
2012 International Journal on Semantic Web and Information Systems (IJSWIS)  
Sensor networks are increasingly being deployed in the environment for many different purposes.  ...  Queries over Streaming Data A data stream consists of an unbounded sequence of values continuously appended, each of which carries atimestamp that typically indicates when it has been produced.  ...  SPARQLstream each virtual RDF stream is identified by an IRI that can later be used in a query.  ... 
doi:10.4018/jswis.2012010103 fatcat:2krhi2mlsjd55d7y7pqwkhpd64

Knowledge-infused and consistent Complex Event Processing over real-time and persistent streams

Qunzhi Zhou, Yogesh Simmhan, Viktor Prasanna
2017 Future generations computer systems  
in accessing high-volume historic data streams.  ...  Complex Event Processing (CEP) is recognized as an important real-time computing paradigm for analyzing continuous data streams.  ...  (subject, object) [44] .  ... 
doi:10.1016/j.future.2016.10.030 fatcat:gvqp34dfvbfwjbefip5cu35tsm

A Survey on Semantic Sensor Web: Sensor Ontology, Mapping and Query

Xiaoming Zhang, Mei Li
2015 International Journal of u- and e- Service, Science and Technology  
Secondly, we discuss the mapping from the stream data to ontology and focus on the comparison of the mapping languages in order to find out the best mapping method of SSW.  ...  Thirdly, we describe the research status of stream data query languages and analyze the characteristics, the application fields, the related researches and tools of the query languages in detail.  ...  In the query process, all the query languages make the actual RDF files as the query object except the SPARQL Stream query language. It just generates a virtual RDF query and RDF file does not exist.  ... 
doi:10.14257/ijunesst.2015.8.10.32 fatcat:d2nksllpkrcufi4l72x7fnzk3a

EP-SPARQL

Darko Anicic, Paul Fodor, Sebastian Rudolph, Nenad Stojanovic
2011 Proceedings of the 20th international conference on World wide web - WWW '11  
Streams of events appear increasingly today in various Web applications such as blogs, feeds, sensor data streams, geospatial information, on-line financial data, etc.  ...  Event Processing (EP) is concerned with timely detection of compound events within streams of simple events.  ...  That is, we propose an approach to detect complex events (specified in an appropriate formal language) within a stream of RDF triples (atomic events).  ... 
doi:10.1145/1963405.1963495 dblp:conf/www/AnicicFRS11 fatcat:x3534wtrtbbmlfoyhrhgvv6ygq

Water Quality Improvement and Pollutant Removal by Two Regional Detention Facilities with Constructed Wetlands in South Texas

Javier Guerrero, Ahmed Mahmoud, Taufiqul Alam, Muhammed A. Chowdhury, Adeniyi Adetayo, Andrew Ernest, Kim D. Jones
2020 Sustainability  
on various storm events in McAllen, Texas.  ...  The objective of this research project is to determine the performance and efficiency of two major regional detention facilities (RDFs) with different designs and structures in reducing pollutants based  ...  Acknowledgments: The authors would like to thank TCEQ NPS project manager for his support and contribution in data quality assurance.  ... 
doi:10.3390/su12072844 fatcat:l427fphgfbacrf6uvwk47ph3si

Semantics of Cyber-Physical Systems [chapter]

Tharam Dillon, Elizabeth Chang, Jaipal Singh, Omar Hussain
2012 IFIP Advances in Information and Communication Technology  
Grand challenges to informatics posed by CPS are raised in the paper.  ...  The solution to CPS must transcend the boundary between the cyber world and the physical world by providing integrated models addressing issues from both worlds simultaneously.  ...  Exte This RDF statement may Object).  ... 
doi:10.1007/978-3-642-32891-6_3 fatcat:vjruf5v2vbdujdmts5vj5rbptu

Enabling Ontology-Based Access to Streaming Data Sources [chapter]

Jean-Paul Calbimonte, Oscar Corcho, Alasdair J. G. Gray
2010 Lecture Notes in Computer Science  
In this paper we describe an ontology-based streaming data access service. Sources link their data content to ontologies through s2o mappings.  ...  With this proposal we expect to set the basis for future efforts in ontology-based streaming data integration. 1 http://www.aemet.es accessed 15 September 2010. 2  ...  Several stream processing and querying engines have been built in the last decade and can be grouped in two main areas: event stream systems (e.g.  ... 
doi:10.1007/978-3-642-17746-0_7 fatcat:nlic5jvzfffc3jqplsqc6hhowi
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