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Stream Reasoning : Where We Got So Far

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Emanuele Della Valle
Emanuele Della Valle

The presentation I gave at NeFoRS'10 colocated with ESWC 2010 in Heraklion, Greece, on May 31st, 2010

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Stream Reasoning Where We Got So Far http://streamreasoning.org Emanuele Della Valle DEI - Politecnico di Milano [email_address] http://emanueledellavalle.org Joint work with: Davide Francesco Barbieri, Daniele Braga, Stefano Ceri, and Michael Grossniklaus
Agenda ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Motivation It‘s a streaming World! [IEEE-IS2009] ,[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Motivation Questions People are Asking ,[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Motivation Problem Statement ,[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Background What are data streams anyway? ,[object Object],[object Object],[object Object],[object Object],[object Object],time NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Background Can the Semantic Web process data stream? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Background Continuous Semantics ,[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Background Stream Processing ,[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010 window input stream stream of answer Registered Continuous Query
Background Key Optimization in Stream Processing ,[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Background Data Stream Management Systems (DSMS) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Concept Stream Reasoning [IEEE-IS2010, Dagstuhl2010] ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Concept Research Challenges ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Concept Engineering challenges ,[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Concept Evaluation and Success Criteria ,[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010 Efficiency Criterion Querying Answering Complex Inference Nr. of streams 10s of streams 10s of streams Speed per stream (assertions/second a/t) 1000s a/t 10s a/t Nr. of registered queries 100s of queries 100s of queries Response Latency 10s of milliseconds 1000s of milliseconds
Running Example Real-Time Streams on the Web ,[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010 Emanuele Della Valle - visit http://streamreasoning.org LDOW2010 @ WWW 2010, Raleigh, North Carolina, April 27th, 2010
Running Example Example of Questions Users are Asking ,[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Running Example Real Social Media Stream Data: Glue NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Running Example Glue Data Model as an Ontology NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010 URL rdfs : label skos : subject owl : sameAs Object Resource links describes URL foaf : name User sioc : follows foaf : knows accesses likes dislikes data stream background knowledge URL rdfs : label
Achievements Stream Reasoner Inputs and Outputs NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements Explored Continuous Semantics for SeWeb ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements Architecture of our Simple Stream Reasoner ,[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010 Select Abstract Reason Streamed Input Window Content RDF Streams Answers Streams Window RDF Graphs
Achievements RDF Stream [WWW2009,EDBT2010] ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements Windows on RDF Streams ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements Example Window of RDF Stream [SDOW2009] ,[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements C-SPARQL [WWW2009,EDBT2010] ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements An Simple Example of C-SPARQL Query ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements An Simple Example of C-SPARQL Query ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010 Triples from a graph Combined with triples from a stream Query registration (for continuous execution) FROM STREAM clause WINDOW
Achievements An Advance Example of C-SPARQL Query ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements C-SPARQL at Work [SDOW2009] NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010 http://c-sparql.cefriel.it/sdow-demo/C-SPARQLquery.html
Achievements Efficiency of Evaluation 1/3 [SDOW2009] ,[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements Efficiency of Evaluation 2/3 [EDBT2010] ,[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements Efficiency of Evaluation 3/3 [EDBT2010] ,[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements Example of C-SPARQL and Reasoning 1/2 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements Example of C-SPARQL and Reasoning 2/2 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements Incremental Reasoning: State-of-the-Art ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements State-of-the-Art Approach [Ceri1994,Volz2005] ,[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements our approach [ESWC2010] 1/2 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements our approach [ESWC2010] 2/2 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Achievements Comparative Evaluation [ESWC2010] ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Retrospective and Conclusions Wrap Up ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Retrospective and Conclusions Achievements vs. Research Challenges ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Retrospective and Conclusions Achievements vs. Engineering challenges ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Retrospective and Conclusions A Key Problem to Investigate [Dagstuhl2010] ,[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010 Raw Stream Processing RDF Streams Logic Programs DL Complexity Reasoning Querying Rewriting Abstraction Selection Interpretation Change Frequency PTIME 2NEXPTIME 10 4 Hz 1 Hz Dynamics and Scale vs. Complexity Evolving Knowlege
References (selection) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
Thank You! Questions? Much More to Come! Keep an eye on http://www.streamreasoning.org NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010

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Stream Reasoning : Where We Got So Far

  • 1. Stream Reasoning Where We Got So Far http://streamreasoning.org Emanuele Della Valle DEI - Politecnico di Milano [email_address] http://emanueledellavalle.org Joint work with: Davide Francesco Barbieri, Daniele Braga, Stefano Ceri, and Michael Grossniklaus
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  • 18. Running Example Real Social Media Stream Data: Glue NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
  • 19. Running Example Glue Data Model as an Ontology NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010 URL rdfs : label skos : subject owl : sameAs Object Resource links describes URL foaf : name User sioc : follows foaf : knows accesses likes dislikes data stream background knowledge URL rdfs : label
  • 20. Achievements Stream Reasoner Inputs and Outputs NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010
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  • 30. Achievements C-SPARQL at Work [SDOW2009] NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010 http://c-sparql.cefriel.it/sdow-demo/C-SPARQLquery.html
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  • 46. Thank You! Questions? Much More to Come! Keep an eye on http://www.streamreasoning.org NeFoRS'10 @ ESWC 2010, Heraklion, Greece, May 31st, 2010

Editor's Notes

  1. Service-Finder