Mastering the variety dimension

Transcription

1 Mastering the variety dimension Emanuele Della Valle DEIB - Politecnico di Milano emanuele.dellavalle@polimi.it h>p://emanueledellavalle.org

2 Agenda In a changing world variety is unavoidable SemanEc Technologies embrace change Mastering variety with semanec technologies 2 1/12/2014 h>p://emanueledellavalle.org

3 Once upon a Eme, in an happy organization, users were happy of the application the IT department prepared for them, but the organization was not alone. Another organization developed a complementary application 3 application complementary application complementary application so, one day, the two organizations decided to integrate the two applications. application? Organizational boundaries application Organizational boundaries Having much to gain the happy organization decided to invest in a bi-lateral solution application! adapter Organizational boundaries complementary application

4 and this went on for a while, but the more bi-lateral integrations, the sadder the organizations became. Legend 4!!!!!!!!!??!?!!! OK!! Good!!! Very Good!?! Very Good?!? Have I done the right thing???? Does it make sence??#@ Why am I doying it!!!

5 So, they standardized and 5 and they lived happily ever after!

6 Well, not really :- ( Actually KEEP 6 CALM AND WAIT FOR YEARS

7 E.g., Open GeospaEal ConsorEum 20 years of activity more than 400 organizations 30 standards Standard GML Geography Markup Language WFS Web Feature Service WMS Web Map Service 7 v1.0 v2.0 v3.0 v3.1 v1 v1.1 v1.0 v1.1.1 v1.3 V1.1 v3.2.1 V2.0

8 Why? The StandardizaEon dilemma! Comprehensive Handles all use cases 8 Good High quality Timely Completed quickly

9 Standards are like plumbs There are a variety of them and 9

10 B standards are like plumbs someeme the variety is required E. Della Valle 10

11 standards are like plumbs 11 some5me it is an obstacle, thus

12 standards are like plumbs thus transla5on is needed 12

13 Transla5on is unavoidable! 100% Comprehensive 0% 13 Time Standard

14 So What?!? It is not necessarily the strongest of the species that survives nor the most intelligent, but the one that is most responsive to change Charles Darwin The Origin of Species

15 Seman5c Technologies embrace change Proposing a simple data model: RDF subject property object E.g., Italy borderson Switzerland 15 Flexible enough to represent: Tables Trees Graphs

16 Seman5c Technologies embrace change Providing a powerful query language: SPARQL E.g., what does Italy border on? Italian border borderson?x?x={switzerland, Austria, Vatican, San Marino, France and Slovenia} Flexible enough to query RDF data even without knowing the schema E.g., can you describe Italy??p={bordersOn}?x={Switzerland, Austria, Vatican, }?p={hascapital}?x={rome}?p={timezone}?x={utc+1} 16?p Italy?x

17 Seman5c Technologies embrace change Providing a formal language for conceptual modelling: OWL E.g., Corine Land Covers Types Inland Water Forest Land Semi-natural Vegetation Artificial areas OWL is a modular standard that offers different trade-offs OWL-QL OWL-RL OWL-EL 17 Data Terms Data Terms Data Terms

18 Mastering variety with Seman5c Technologies Ontology Based Data Access as a prototypical solution to interoperability problems Standard in OWL 18 Translator Translator Translator RDBMS JSON

19 Mastering variety with Seman5c Technologies Ontology Based Data Access as a prototypical solution to interoperability problems SPARQL Queries Standard in OWL 19 Translator Translator Translator RDBMS JSON

20 Mastering variety with Seman5c Technologies Ontology Based Data Access as a prototypical solution to interoperability problems Results {,, } Standard in OWL 20 Translator Translator Translator RDBMS JSON

21 Those ideas at work on scale Google for "restaurants in nyc central park" B One model: Google knowledge graph Little spatial reasoning A variety of sources: E. Della Valle thecentralparkboathouse.com viewmenu.com opentable.com plus.google.com 21

22 Thank you! Any QuesEon? Emanuele Della Valle DEIB - Politecnico di Milano emanuele.dellavalle@polimi.it h>p://emanueledellavalle.org