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Publication of RDF Streams with Ztreamy [chapter]

Jesús Arias Fisteus, Norberto Fernández García, Luis Sánchez Fernández, Damaris Fuentes-Lorenzo
2014 Lecture Notes in Computer Science  
The goal of this demo is to show the functionality of Ztreamy in two different scenarios with actual, heterogeneous streaming data.  ...  In this work we focus on one of them: the distribution of RDF streams through the Web.  ...  Another aspect to be taken into account is the scalable publication of RDF streams on the Web.  ... 
doi:10.1007/978-3-319-11955-7_36 fatcat:olg6t2k7jbfzpkqtrtyfszyjwy

Ztreamy: A Middleware for Publishing Semantic Streams on the Web

Jesus Arias Fisteus, Norberto Fernandez Garcia, Luis Sanchez Fernandez, Damaris Fuentes-Lorenzo
2014 Social Science Research Network  
Our experiments with Ztreamy show that a single server is able, in some configurations, to publish a real-time stream to up to 40000 simultaneous clients with delivery delays of just a few seconds, largely  ...  In this work we present Ztreamy, a scalable middleware platform for the distribution of semantic data streams through HTTP.  ...  However, it has been designed for compressing large RDF graphs instead of streams. Implementation of Ztreamy We have implemented Ztreamy on top of the Tornado Web server 3 .  ... 
doi:10.2139/ssrn.3199089 fatcat:ug3tuh77mvfbllwrerbs46d3fu

Ztreamy: A middleware for publishing semantic streams on the Web

Jesus Arias Fisteus, Norberto Fernández García, Luis Sánchez Fernández, Damaris Fuentes-Lorenzo
2014 Journal of Web Semantics  
Our experiments with Ztreamy show that a single server is able, in some configurations, to publish a real-time stream to up to 40000 simultaneous clients with delivery delays of just a few seconds, largely  ...  In this work we present Ztreamy, a scalable middleware platform for the distribution of semantic data streams through HTTP.  ...  However, it has been designed for compressing large RDF graphs instead of streams. Implementation of Ztreamy We have implemented Ztreamy on top of the Tornado Web server 3 .  ... 
doi:10.1016/j.websem.2013.11.002 fatcat:6gosvzptcjg5dj7znvl5cpxh7i

RDSZ: An Approach for Lossless RDF Stream Compression [chapter]

Norberto Fernández, Jesús Arias, Luis Sánchez, Damaris Fuentes-Lorenzo, Óscar Corcho
2014 Lecture Notes in Computer Science  
This approach takes advantage of the structural similarities among items in a stream by combining a differential item encoding mechanism with the general purpose stream compressor Zlib.  ...  Empirical evaluation using several RDF stream datasets shows that this combination produces gains in compression ratios with respect to using Zlib alone.  ...  The topic of RDF stream compression has been indirectly covered in CQELS Cloud [9] and Ztreamy [2] .  ... 
doi:10.1007/978-3-319-07443-6_5 fatcat:xdjjdzcfbraxdnam6qe63bc6jy

TripleWave: Spreading RDF Streams on the Web [chapter]

Andrea Mauri, Jean-Paul Calbimonte, Daniele Dell'Aglio, Marco Balduini, Marco Brambilla, Emanuele Della Valle, Karl Aberer
2016 Lecture Notes in Computer Science  
In this work we close this gap, proposing TripleWave, a reusable and generic tool that enables the publication of RDF streams on the Web.  ...  In this context, RDF Stream Processing (RSP) and Stream Reasoning (SR) have emerged as solutions to combine semantic technologies with stream and event processing techniques.  ...  The Semantic Web community has studied the problems associated with the processing of and reasoning over these complex streams of data, leading to the emergence of RDF Stream Processing and Stream Reasoning  ... 
doi:10.1007/978-3-319-46547-0_15 fatcat:yhekoz7vavhsdbwhonp3b5hgim

Efficient RDF Interchange (ERI) Format for RDF Data Streams [chapter]

Javier D. Fernández, Alejandro Llaves, Oscar Corcho
2014 Lecture Notes in Computer Science  
the amount of data transmitted when processing RDF streams.  ...  RDF streams are sequences of timestamped RDF statements or graphs, which can be generated by several types of data sources (sensors, social networks, etc.).  ...  We are thankful for discussions with authors of the RDSZ approach, specially with Norberto Fernández.  ... 
doi:10.1007/978-3-319-11915-1_16 fatcat:wxknvwnax5gwpjg6omuyk7gq54

RDF 1.1: Knowledge Representation and Data Integration Language for the Web

Dominik Tomaszuk, David Hyland-Wood
2020 Symmetry  
We discuss RDF serializations, including formats with support for multiple graphs and we analyze RDF compression proposals.  ...  Finally, we present a summarized formal definition of RDF 1.1 that provides additional insights into the modeling of reification, blank nodes, and entailments.  ...  Acknowledgments: The authors gratefully acknowledges the members of the RDF 1.1 Working Group who defined RDF version 1.1.  ... 
doi:10.3390/sym12010084 fatcat:eh4bronv25ce5l64hmg7zfl3r4

The Overall Architecture of a Decision Support System for Public Buildings

Alfonso Capozzoli, Fulvio Corno, Vincenzo Corrado, Alice Gorrino
2015 Energy Procedia  
A decision support system for building energy management can be a proper tool for supporting the measurement and management of energy usage and costs of public buildings.  ...  The aim of the paper is to describe the architecture of the Decision Support System (DSS), that is being developed within the FP7-Smartcities Project OPTIMUS (OPTimising the energy Use in cities with smart  ...  Acknowledgements This research is conducted under the FP7-Smartcities Project OPTIMUS (OPTimising the energy Use in cities with smart decision support system).  ... 
doi:10.1016/j.egypro.2015.11.318 fatcat:zsw6egjxljbq7i7olqlxydgdpq